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Document and Entity Information	9 Months Ended
Document and Entity Information	Sep. 30, 2016 shares
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q3
Trading Symbol	cmcsa
Entity Registrant Name	COMCAST CORP
Entity Central Index Key	0001166691
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
NBCUniversal Media LLC [Member]
Entity Registrant Name	NBCUniversal Media, LLC
Entity Central Index Key	0000902739
Entity Filer Category	Non-accelerated Filer
Class A Common Stock [Member]
Entity Common Stock, Shares Outstanding	2,383,388,019
Class B Common Stock [Member]
Entity Common Stock, Shares Outstanding	9,444,375

Condensed Consolidated Balance Sheet - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Current Assets:
Cash and cash equivalents	$ 2,807	$ 2,295
Receivables, net	7,533	6,896
Programming rights	1,369	1,213
Other current assets	3,519	1,899
Total current assets	15,228	12,303
Film and television costs	7,153	5,855
Investments	3,857	3,224
Property and equipment, net	35,656	33,665
Franchise rights	59,364	59,364
Goodwill	36,652	32,945
Other intangible assets, net	17,356	16,946
Other noncurrent assets, net	2,658	2,272
Total assets	177,924	166,574
Current Liabilities:
Accounts payable and accrued expenses related to trade creditors	6,594	6,215
Accrued participations and residuals	1,570	1,572
Deferred revenue	1,340	1,302
Accrued expenses and other current liabilities	5,201	5,462
Current portion of long-term debt	3,333	3,627
Total current liabilities	18,038	18,178
Long-term debt, less current portion	57,095	48,994
Deferred income taxes	34,523	33,566
Other noncurrent liabilities	11,119	10,637
Commitments and contingencies
Redeemable noncontrolling interests and redeemable subsidiary preferred stock	1,326	1,221
Equity:
Preferred stock - authorized, 20,000,000 shares; issued, zero	0	0
Common stock	28	29
Additional paid-in capital	38,426	38,518
Retained earnings	22,510	21,413
Treasury stock	(7,517)	(7,517)
Accumulated other comprehensive income (loss)	34	(174)
Total Comcast Corporation shareholders' equity	53,481	52,269
Noncontrolling interests	2,342	1,709
Total equity	55,823	53,978
Total liabilities and equity	177,924	166,574
NBCUniversal Media LLC [Member]
Current Assets:
Cash and cash equivalents	1,890	1,410
Receivables, net	6,050	5,411
Programming rights	1,362	1,200
Other current assets	858	841
Total current assets	10,160	8,862
Film and television costs	7,145	5,847
Investments	1,151	965
Property and equipment, net	10,377	9,521
Goodwill	24,004	20,364
Intangible assets, net	14,001	13,806
Other noncurrent assets, net	1,392	1,325
Total assets	68,230	60,690
Current Liabilities:
Accounts payable and accrued expenses related to trade creditors	1,517	1,564
Accrued participations and residuals	1,570	1,572
Program obligations	637	765
Deferred revenue	1,196	1,242
Accrued expenses and other current liabilities	1,712	1,675
Note payable to Comcast	2,882	1,750
Current portion of long-term debt	164	1,163
Total current liabilities	9,678	9,731
Long-term debt, less current portion	11,928	11,331
Accrued participations residuals and program obligations	1,182	1,163
Other noncurrent liabilities	4,186	3,790
Commitments and contingencies
Redeemable noncontrolling interests	427	372
Equity:
Member's capital	38,406	32,834
Accumulated other comprehensive income (loss)	116	(212)
Total NBCUniversal member's equity	38,522	32,622
Noncontrolling interests	2,307	1,681
Total equity	40,829	34,303
Total liabilities and equity	68,230	60,690
Class A Common Stock [Member]
Equity:
Common stock	28	29
Class B Common Stock [Member]
Equity:
Common stock	$ 0	$ 0

Condensed Consolidated Balance Sheet (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Preferred stock, authorized	20,000,000	20,000,000
Preferred stock, issued	0	0
Accumulated depreciation	$ 49,540	$ 48,100
Accumulated amortization	10,678	9,868
NBCUniversal Media LLC [Member]
Accumulated depreciation	3,253	2,779
Accumulated amortization	$ 6,355	$ 5,654
Class A Common Stock [Member]
Common stock, par value	$ 0.01	$ 0.01
Common stock, authorized	7,500,000,000	7,500,000,000
Common stock, issued	2,819,783,533	2,869,349,502
Common stock, outstanding	2,383,388,019	2,432,953,988
Treasury stock common shares	436,395,514	436,395,514
Class B Common Stock [Member]
Common stock, par value	$ 0.01	$ 0.01
Common stock, authorized	75,000,000	75,000,000
Common stock, issued	9,444,375	9,444,375
Common stock, outstanding	9,444,375	9,444,375

Condensed Consolidated Statement of Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Revenue	$ 21,319	$ 18,669	$ 59,378	$ 55,265
Costs and Expenses:
Programming and production	7,003	5,582	17,926	16,714
Other operating and administrative	5,994	5,390	17,280	15,738
Advertising, marketing and promotion	1,487	1,513	4,515	4,407
Depreciation	1,865	1,697	5,518	5,005
Amortization	530	486	1,544	1,405
Total costs and expenses	16,879	14,668	46,783	43,269
Operating income	4,440	4,001	12,595	11,996
Other Income (Expense):
Interest expense	(751)	(659)	(2,186)	(2,028)
Investment income (loss), net	80	(26)	168	24
Equity in net income (losses) of investees, net	(34)	1	(64)	(202)
Other income (expense), net	(11)	(53)	104	364
Nonoperating income (expense)	(716)	(737)	(1,978)	(1,842)
Income before income taxes	3,724	3,264	10,617	10,154
Income tax expense	(1,400)	(1,223)	(3,989)	(3,797)
Net income	2,324	2,041	6,628	6,357
Net (income) loss attributable to noncontrolling interests and redeemable subsidiary preferred stock	(87)	(45)	(229)	(165)
Net income attributable to Parent	$ 2,237	$ 1,996	$ 6,399	$ 6,192
Basic earnings per common share attributable to Comcast Corporation shareholders	$ 0.93	$ 0.81	$ 2.65	$ 2.48
Diluted earnings per common share attributable to Comcast Corporation shareholders	0.92	0.8	2.62	2.45
Dividends declared per common share	$ 0.275	$ 0.25	$ 0.825	$ 0.75
NBCUniversal Media LLC [Member]
Revenue	$ 9,178	$ 7,151	$ 23,142	$ 20,985
Costs and Expenses:
Programming and production	4,501	3,312	10,503	9,822
Other operating and administrative	1,912	1,534	5,159	4,306
Advertising, marketing and promotion	619	704	2,023	2,050
Depreciation	209	163	624	493
Amortization	236	217	700	656
Total costs and expenses	7,477	5,930	19,009	17,327
Operating income	1,701	1,221	4,133	3,658
Other Income (Expense):
Interest expense	(151)	(116)	(444)	(361)
Investment income (loss), net	6	0	20	(4)
Equity in net income (losses) of investees, net	(34)	(14)	(55)	(241)
Other income (expense), net	(16)	(69)	81	(57)
Nonoperating income (expense)	(195)	(199)	(398)	(663)
Income before income taxes	1,506	1,022	3,735	2,995
Income tax expense	(139)	(60)	(311)	(171)
Net income	1,367	962	3,424	2,824
Net income attributable to Parent	$ 1,289	$ 927	$ 3,224	$ 2,691

Condensed Consolidated Statement of Income (NBCUniversal) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Revenue	$ 21,319	$ 18,669	$ 59,378	$ 55,265
Costs and Expenses:
Programming and production	7,003	5,582	17,926	16,714
Other operating and administrative	5,994	5,390	17,280	15,738
Advertising, marketing and promotion	1,487	1,513	4,515	4,407
Depreciation	1,865	1,697	5,518	5,005
Amortization	530	486	1,544	1,405
Total costs and expenses	16,879	14,668	46,783	43,269
Operating income	4,440	4,001	12,595	11,996
Other Income (Expense):
Interest expense	(751)	(659)	(2,186)	(2,028)
Investment income (loss), net	80	(26)	168	24
Equity in net income (losses) of investees, net	(34)	1	(64)	(202)
Other income (expense), net	(11)	(53)	104	364
Nonoperating income (expense)	(716)	(737)	(1,978)	(1,842)
Income before income taxes	3,724	3,264	10,617	10,154
Income tax expense	(1,400)	(1,223)	(3,989)	(3,797)
Net income	2,324	2,041	6,628	6,357
Net income attributable to Parent	2,237	1,996	6,399	6,192
NBCUniversal Media LLC [Member]
Revenue	9,178	7,151	23,142	20,985
Costs and Expenses:
Programming and production	4,501	3,312	10,503	9,822
Other operating and administrative	1,912	1,534	5,159	4,306
Advertising, marketing and promotion	619	704	2,023	2,050
Depreciation	209	163	624	493
Amortization	236	217	700	656
Total costs and expenses	7,477	5,930	19,009	17,327
Operating income	1,701	1,221	4,133	3,658
Other Income (Expense):
Interest expense	(151)	(116)	(444)	(361)
Investment income (loss), net	6	0	20	(4)
Equity in net income (losses) of investees, net	(34)	(14)	(55)	(241)
Other income (expense), net	(16)	(69)	81	(57)
Nonoperating income (expense)	(195)	(199)	(398)	(663)
Income before income taxes	1,506	1,022	3,735	2,995
Income tax expense	(139)	(60)	(311)	(171)
Net income	1,367	962	3,424	2,824
Net (income) loss attributable to noncontrolling interests	(78)	(35)	(200)	(133)
Net income attributable to Parent	$ 1,289	$ 927	$ 3,224	$ 2,691

Condensed Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Net income	$ 2,324	$ 2,041	$ 6,628	$ 6,357
Unrealized gains (losses) on marketable securities, net of deferred taxes	(1)	1	2	1
Deferred gains (losses) on cash flow hedges, net of deferred taxes	12	(50)	(79)	(67)
Amounts reclassified to net income:
Realized (gains) losses on marketable securities, net of deferred taxes	0	(1)	(1)	(1)
Realized (gains) losses on cash flow hedges, net of deferred taxes	11	32	73	42
Employee benefit obligations, net of deferred taxes	0	14	2	14
Currency translation adjustments, net of deferred taxes	45	(41)	532	(64)
Comprehensive income	2,391	1,996	7,157	6,282
Net (income) loss attributable to noncontrolling interests and redeemable subsidiary preferred stock	(87)	(45)	(229)	(165)
Other comprehensive (income) loss attributable to noncontrolling interests	(34)	16	(321)	26
Comprehensive income attributable to Parent	2,270	1,967	6,607	6,143
NBCUniversal Media LLC [Member]
Net income	1,367	962	3,424	2,824
Deferred gains (losses) on cash flow hedges, net of deferred taxes	5	(6)	(7)	(12)
Amounts reclassified to net income:
Employee benefit obligations, net of deferred taxes	0	22	4	22
Currency translation adjustments, net of deferred taxes	50	(57)	652	(88)
Comprehensive income	1,422	921	4,073	2,746
Net (income) loss attributable to noncontrolling interests	(78)	(35)	(200)	(133)
Other comprehensive (income) loss attributable to noncontrolling interests	(34)	16	(321)	26
Comprehensive income attributable to Parent	$ 1,310	$ 902	$ 3,552	$ 2,639

Condensed Consolidated Statement of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Unrealized gains (losses) on marketable securities, deferred taxes	$ 0	$ 0	$ (1)	$ 0
Deferred gains (losses) on cash flow hedges, deferred taxes	(7)	30	46	40
Realized (gains) losses on marketable securities, deferred taxes	0	1	1	1
Realized (gains) losses on cash flow hedges, deferred taxes	(6)	(20)	(42)	(26)
Employee benefit obligations, deferred taxes	0	(8)	(2)	(8)
Currency translation adjustments, deferred taxes	$ (6)	$ 15	$ (122)	$ 23

Condensed Consolidated Statement of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Operating Activities
Net cash provided by operating activities	$ 13,497	$ 13,813
Investing Activities
Capital expenditures	(6,562)	(5,862)
Cash paid for intangible assets	(1,163)	(916)
Acquisitions and construction of real estate properties	(303)	(116)
Acquisitions, net of cash acquired	(3,904)	(286)
Proceeds from sales of businesses and investments	188	420
Purchases of investments	(618)	(712)
Deposits	(1,761)	0
Other	(29)	268
Net cash provided by (used in) investing activities	(14,152)	(7,204)
Financing Activities
Proceeds from (repayments of) short-term borrowings, net	610	(220)
Proceeds from borrowings	9,231	3,996
Repurchases and repayments of debt	(2,994)	(4,353)
Repurchases and retirements of common stock	(3,762)	(5,770)
Dividends paid	(1,944)	(1,823)
Issuances of common stock	23	35
Distributions to noncontrolling interests and dividends for redeemable subsidiary preferred stock	(194)	(178)
Other	197	(313)
Net cash provided by (used in) financing activities	1,167	(8,626)
Increase (decrease) in cash and cash equivalents	512	(2,017)
Cash and cash equivalents, beginning of period	2,295	3,910
Cash and cash equivalents, end of period	2,807	1,893
NBCUniversal Media LLC [Member]
Operating Activities
Net cash provided by operating activities	3,339	4,318
Investing Activities
Capital expenditures	(991)	(829)
Cash paid for intangible assets	(181)	(99)
Acquisitions of real estate properties	(78)	0
Acquisitions, net of cash acquired	(195)	(38)
Note receivable from Comcast	0	(77)
Proceeds from sales of businesses and investments	104	218
Purchases of investments	(74)	(626)
Other	(41)	186
Net cash provided by (used in) investing activities	(1,456)	(1,265)
Financing Activities
Proceeds from (repayments of) borrowings from Comcast, net	1,132	(896)
Repurchases and repayments of debt	(1,515)	(1,004)
Distributions to noncontrolling interests	(161)	(146)
Distributions to member	(1,213)	(1,186)
Other	354	0
Net cash provided by (used in) financing activities	(1,403)	(3,232)
Increase (decrease) in cash and cash equivalents	480	(179)
Cash and cash equivalents, beginning of period	1,410	1,248
Cash and cash equivalents, end of period	$ 1,890	$ 1,069

Condensed Consolidated Statement of Changes in Equity - USD ($) $ in Millions	Total	NBCUniversal Media LLC [Member]	Redeemable Noncontrolling Interests And Redeemable Subsidiary Preferred Stock [Member]	Class A Common Stock [Member]	Class A Special Common Stock [Member]	Class B Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Treasury Stock at Cost [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Other Comprehensive Income (Loss) [Member] NBCUniversal Media LLC [Member]	Noncontrolling Interests [Member]	Noncontrolling Interests [Member] NBCUniversal Media LLC [Member]	Redeemable Noncontrolling Interest [Member] NBCUniversal Media LLC [Member]	Member's Capital [Member] NBCUniversal Media LLC [Member]
Beginning Balance at Dec. 31, 2014	$ 53,068		$ 1,066	$ 25	$ 5	$ 0	$ 38,805	$ 21,539	$ (7,517)	$ (146)		$ 357
Beginning balance at Dec. 31, 2014		$ 30,637									$ (159)		$ 267	$ 330	$ 30,529
Stock compensation plans	210						573	(363)
Repurchases and retirements of common stock	(5,770)				(1)		(1,155)	(4,614)
Employee stock purchase plans	106						106
Dividends declared	(1,871)	(1,186)						(1,871)							(1,186)
Contribution from member		252													252
Other comprehensive income (loss)	(75)	(78)								(49)	(52)	(26)	(26)
Contributions from (distributions to) noncontrolling interests, net	(114)	(127)	12									(114)	(127)	(19)
Other	113	32	67				187					(74)	2	28	30
Net income (loss)	6,298	2,796	59					6,192				106	105	28	2,691
Ending balance at Sep. 30, 2015		32,326									(211)		221	367	32,316
Ending Balance at Sep. 30, 2015	51,965		1,204	25	4	0	38,516	20,883	(7,517)	(195)		249
Beginning Balance at Dec. 31, 2015	53,978		1,221	29	0	0	38,518	21,413	(7,517)	(174)		1,709
Beginning balance at Dec. 31, 2015		34,303									(212)		1,681	372	32,834
Stock compensation plans	280						544	(264)
Repurchases and retirements of common stock	(3,762)			(1)			(722)	(3,039)
Employee stock purchase plans	117						117
Dividends declared	(1,999)	(1,213)						(1,999)							(1,213)
Other comprehensive income (loss)	529	649								208	328	321	321
Contributions from (distributions to) noncontrolling interests, net	(99)	(114)	(20)									(99)	(114)	(47)
DreamWorks contributions		3,647											89		3,558
Other	214	163	62				(31)					245	160	72	3
Net income (loss)	6,565	3,394	63					6,399				166	170	30	3,224
Ending balance at Sep. 30, 2016		$ 40,829									$ 116		$ 2,307	$ 427	$ 38,406
Ending Balance at Sep. 30, 2016	$ 55,823		$ 1,326	$ 28	$ 0	$ 0	$ 38,426	$ 22,510	$ (7,517)	$ 34		$ 2,342

Condensed Consolidated Financial Statements	9 Months Ended
Condensed Consolidated Financial Statements	Sep. 30, 2016
Condensed Consolidated Financial Statements	Note 1: Condensed Consolidated Financial Statements Basis of Presentation We have prepared these unaudited condensed consolidated financial statements based on SEC rules that permit reduced disclosure for interim periods. These financial statements include all adjustments that are necessary for a fair presentation of our consolidated results of operations, financial condition and cash flows for the periods shown, including normal, recurring accruals and other items. The consolidated results of operations for the interim periods presented are not necessarily indicative of results for the full year. The year-end condensed consolidated balance sheet was derived from audited financial statements but does not include all disclosures required by generally accepted accounting principles in the United States (“GAAP”). For a more complete discussion of our accounting policies and certain other information, refer to our consolidated financial statements included in our 2015 Annual Report on Form 10-K. Reclassifications Reclassifications have been made to our condensed consolidated financial statements for the prior year periods to conform to classifications used in 2016.
NBCUniversal Media LLC [Member]
Condensed Consolidated Financial Statements	Note 1: Condensed Consolidated Financial Statements Basis of Presentation Unless indicated otherwise, throughout these notes to the condensed consolidated financial statements, we refer to NBCUniversal and its consolidated subsidiaries as “we,” “us” and “our.” We have prepared these unaudited condensed consolidated financial statements based on SEC rules that permit reduced disclosure for interim periods. These financial statements include all adjustments that are necessary for a fair presentation of our consolidated results of operations, financial condition and cash flows for the periods shown, including normal, recurring accruals and other items. The consolidated results of operations for the interim periods presented are not necessarily indicative of results for the full year. The year-end condensed consolidated balance sheet was derived from audited financial statements but does not include all disclosures required by generally accepted accounting principles in the United States (“GAAP”). For a more complete discussion of our accounting policies and certain other information, refer to our consolidated financial statements included in our 2015 Annual Report on Form 10-K.

Recent Accounting Pronouncements	9 Months Ended
Recent Accounting Pronouncements	Sep. 30, 2016
Recent Accounting Pronouncements	Note 2: Recent Accounting Pronouncements Revenue Recognition In May 2014, the Financial Accounting Standards Board (“FASB”) updated the accounting guidance related to revenue recognition. The updated accounting guidance provides a single, contract-based revenue recognition model to help improve financial reporting by providing clearer guidance on when an entity should recognize revenue and by reducing the number of standards to which an entity has to refer. The updated guidance is effective for us as of January 1, 2018. The updated accounting guidance provides companies with alternative methods of adoption. We are currently in the process of determining the impact that the updated accounting guidance will have on our consolidated financial statements and our method of adoption. Consolidations In February 2015, the FASB updated the accounting guidance related to consolidation under the variable interest entity (“VIE”) and voting interest entity models. The updated accounting guidance modifies the consolidation guidance for VIEs, limited partnerships and similar legal entities. We have adopted this guidance as of January 1, 2016 and it did not have a material impact on our consolidated financial statements. Financial Assets and Financial Liabilities In January 2016, the FASB updated the accounting guidance related to the recognition and measurement of financial assets and financial liabilities. The updated accounting guidance, among other things, requires that all nonconsolidated equity investments, except those accounted for under the equity method, be measured at fair value and that the changes in fair value be recognized in net income. The updated guidance is effective for us as of January 1, 2018. The updated accounting guidance requires a cumulative effect adjustment to beginning retained earnings when the guidance is adopted with certain exceptions. We are currently in the process of determining the impact that the updated accounting guidance will have on our consolidated financial statements. Leases In February 2016, the FASB updated the accounting guidance related to leases. The updated accounting guidance requires lessees to recognize a right-of-use asset and a lease liability on the balance sheet for all leases with the exception of short-term leases. For a lessee, the recognition, measurement and presentation of expenses and cash flows arising from a lease do not significantly change from previous guidance. For a lessor, the accounting applied is also largely unchanged from previous guidance. The updated guidance is effective for us as of January 1, 2019 and early adoption is permitted. The updated accounting guidance must be adopted using a modified retrospective approach for leases that exist or are entered into after the beginning of the earliest comparative period in the financial statements. We are currently in the process of determining the impact that the updated accounting guidance will have on our consolidated financial statements. Share-Based Compensation In March 2016, the FASB updated the accounting guidance that affects several aspects of the accounting for share-based compensation. The most significant change for us relates to the presentation of the income and withholding tax consequences of share-based compensation in our consolidated financial statements. Among the changes, the updated guidance requires that the excess income tax benefits or deficiencies that arise when the tax consequences of share-based compensation differ from amounts previously recognized in the statement of income be recognized as income tax benefit or expense in the statement of income rather than as additional paid-in capital in the balance sheet. The guidance also states that excess income tax benefits should not be presented separately from other income taxes in the statement of cash flows and, thus, should be classified as an operating activity rather than a financing activity as they are under the current guidance. In addition, the updated guidance requires when an employer withholds shares upon exercise of options or the vesting of restricted stock for the purpose of meeting withholding tax requirements, that the cash paid for withholding taxes be classified as a financing activity. We currently record these amounts within operating activities. We will implement the updated guidance in the first quarter of 2017. As required under the updated guidance, we will prospectively adopt the provisions of this guidance related to the recognition of the excess tax benefits or deficiencies in the statement of income. In addition, upon adoption we will retrospectively adopt the provisions of this guidance related to changes to the statement of cash flows for all periods presented. If we had adopted the provisions of the updated guidance as of January 1, 2016, it would have increased net income attributable to Comcast Corporation by $34 million and $193 million for the three and nine months ended September 30, 2016, respectively. In addition, the updated guidance would have increased net cash provided by operating activities and decreased net cash provided by (used in) financing activities by $493 million for the nine months ended September 30, 2016. The most significant impact of implementing the new guidance is expected to occur in the first quarter of each year as a result of the vesting of restricted stock awards, which primarily occurs in March.
NBCUniversal Media LLC [Member]
Recent Accounting Pronouncements	Note 2: Recent Accounting Pronouncements Revenue Recognition In May 2014, the Financial Accounting Standards Board (“FASB”) updated the accounting guidance related to revenue recognition. The updated accounting guidance provides a single, contract-based revenue recognition model to help improve financial reporting by providing clearer guidance on when an entity should recognize revenue and by reducing the number of standards to which an entity has to refer. The updated guidance is effective for us as of January 1, 2018. The updated accounting guidance provides companies with alternative methods of adoption. We are currently in the process of determining the impact that the updated accounting guidance will have on our consolidated financial statements and our method of adoption. Consolidations In February 2015, the FASB updated the accounting guidance related to consolidation under the variable interest entity (“VIE”) and voting interest entity models. The updated accounting guidance modifies the consolidation guidance for VIEs, limited partnerships and similar legal entities. We have adopted this guidance as of January 1, 2016 and it did not have a material impact on our consolidated financial statements. Financial Assets and Financial Liabilities In January 2016, the FASB updated the accounting guidance related to the recognition and measurement of financial assets and financial liabilities. The updated accounting guidance, among other things, requires that all nonconsolidated equity investments, except those accounted for under the equity method, be measured at fair value and that the changes in fair value be recognized in net income. The updated guidance is effective for us as of January 1, 2018. The updated accounting guidance requires a cumulative effect adjustment to beginning retained earnings when the guidance is adopted with certain exceptions. We are currently in the process of determining the impact that the updated accounting guidance will have on our consolidated financial statements. Leases In February 2016, the FASB updated the accounting guidance related to leases. The updated accounting guidance requires lessees to recognize a right-of-use asset and a lease liability on the balance sheet for all leases with the exception of short-term leases. For a lessee, the recognition, measurement and presentation of expenses and cash flows arising from a lease do not significantly change from previous guidance. For a lessor, the accounting applied is also largely unchanged from previous guidance. The updated guidance is effective for us as of January 1, 2019 and early adoption is permitted. The updated accounting guidance must be adopted using a modified retrospective approach for leases that exist or are entered into after the beginning of the earliest comparative period in the financial statements. We are currently in the process of determining the impact that the updated accounting guidance will have on our consolidated financial statements. Share-Based Compensation In March 2016, the FASB updated the accounting guidance that affects several aspects of the accounting for share-based compensation. The most significant change for us relates to the presentation of the income and withholding tax consequences of share-based compensation in our consolidated financial statements. Among the changes, the updated guidance requires that the excess income tax benefits or deficiencies that arise when the tax consequences of share-based compensation differ from amounts previously recognized in the statement of income be recognized as income tax benefit or expense in the statement of income rather than as additional paid-in capital in the balance sheet. The guidance also states that excess income tax benefits should not be presented separately from other income taxes in the statement of cash flows and, thus, should be classified as an operating activity rather than a financing activity as they are under the current guidance. In addition, the updated guidance requires when an employer withholds shares upon exercise of options or the vesting of restricted stock for the purpose of meeting withholding tax requirements, that the cash paid for withholding taxes be classified as a financing activity. We currently record these amounts within operating activities. We will implement the updated guidance in the first quarter of 2017. As a limited liability company, we do not expect the updated accounting guidance related to the excess income tax benefits or deficiencies to be recognized in the statement of income to have an impact on our consolidated financial statements. In addition, we do not expect the updated accounting guidance to have a material impact on our statement of cash flows.

- Definition

The entire disclosure of changes in accounting principles, including adoption of new accounting pronouncements, that describes the new methods, amount and effects on financial statement line items.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Change in Accounting Principle
-URI http://asc.fasb.org/extlink&oid=6507316

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Direct Effects of a Change in Accounting Principle
-URI http://asc.fasb.org/extlink&oid=6510796

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=56949863&loc=d3e22583-107794

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Indirect Effects of a Change in Accounting Principle
-URI http://asc.fasb.org/extlink&oid=6515603

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=56949863&loc=d3e22580-107794

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.10-01.(b)(6))
-URI http://asc.fasb.org/extlink&oid=27015980&loc=d3e46468-122699

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Accounting Change
-URI http://asc.fasb.org/extlink&oid=6503790

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=56949863&loc=d3e22499-107794

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Retrospective Application
-URI http://asc.fasb.org/extlink&oid=6523989

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
-Section 45
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=51655806&loc=d3e765-108305

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=51655806&loc=d3e725-108305

+ Details

Earnings Per Share

9 Months Ended

Sep. 30, 2016

Earnings Per Share

Earnings Per Share

Note 3: Earnings Per Share

Computation of Diluted EPS
		Three Months Ended September 30
			2016					2015
(in millions, except per share data)			Net Income Attributable to Comcast Corporation	Shares		Per Share Amount		Net Income Attributable to Comcast Corporation	Shares		Per Share Amount
Basic EPS attributable to Comcast Corporation
	shareholders	$	2,237	2,403	$	0.93	$	1,996	2,472	$	0.81
Effect of dilutive securities:
	Assumed exercise or issuance of shares relating
	to stock plans			28					30
Diluted EPS attributable to Comcast
	Corporation shareholders	$	2,237	2,431	$	0.92	$	1,996	2,502	$	0.80

		Nine Months Ended September 30
			2016					2015
(in millions, except per share data)			Net Income Attributable to Comcast Corporation	Shares		Per Share Amount		Net Income Attributable to Comcast Corporation	Shares		Per Share Amount
Basic EPS attributable to Comcast Corporation
	shareholders	$	6,399	2,419	$	2.65	$	6,192	2,498	$	2.48
Effect of dilutive securities:
	Assumed exercise or issuance of shares relating
	to stock plans			27					32
Diluted EPS attributable to Comcast
	Corporation shareholders	$	6,399	2,446	$	2.62	$	6,192	2,530	$	2.45

Diluted earnings per common share attributable to Comcast Corporation shareholders (“diluted EPS”) considers the impact of potentially dilutive securities using the treasury stock method. Our potentially dilutive securities include potential common shares related to our stock options and our restricted share units (“RSUs”). The amount of potential common shares related to our share-based compensation plans that were excluded from diluted EPS because their effect would have been antidilutive was not material for the three and nine months ended September 30, 2016 and 2015.

Significant Transactions

9 Months Ended

Sep. 30, 2016

Significant Transactions

Note 4: Significant Transactions

DreamWorks

On August 22, 2016, we acquired all of the outstanding stock of DreamWorks Animation SKG, Inc. (“DreamWorks”) for $3.8 billion. DreamWorks’ stockholders received $41 in cash for each share of DreamWorks common stock. DreamWorks creates animated feature films, television series and specials, live entertainment and related consumer products. The results of operations for DreamWorks are reported in our Filmed Entertainment segment following the acquisition date.

The transaction is accounted for under the acquisition method of accounting and, accordingly, the assets and liabilities are to be recorded at their fair market values as of the acquisition date. Due to the limited amount of time since the acquisition date, the assets and liabilities of DreamWorks were recorded based primarily on their historical carrying values. We recorded the debt we assumed from DreamWorks at its estimated fair value of $381 million and we recorded a liability related to a tax receivable agreement that DreamWorks had previously entered into with one of its former stockholders (the “tax receivable agreement”) at its estimated fair value of $146 million. The fair value of the assumed debt was primarily based on quoted market values. The fair value of the tax receivable agreement was based on the contractual settlement provisions in the agreement and the value is subject to adjustment. In addition, we recorded deferred income taxes based on our estimate of the tax basis of the acquired assets and valuation allowances based on the expected use of net operating loss carryforwards. The remaining assets and liabilities primarily consisted of goodwill and film and television costs. We will adjust the remaining assets and liabilities to fair value and will record the related deferred income tax adjustments as valuations are completed and we obtain information necessary to complete the analyses, but no later than one year from the acquisition date. For purposes of the preliminary allocation of purchase price, the excess of the total transaction value over the recorded values of the net assets acquired has been recorded as goodwill.

The tax receivable agreement was settled immediately following the acquisition and the payment was recorded as an operating activity in our condensed consolidated statement of cash flows. In addition, during the three months ended September 30, 2016, we repaid all of the assumed debt of DreamWorks (see Note 8).

Revenue and net income attributable to the acquisition of DreamWorks were not material for the three and nine months ended September 30, 2016. During the three months ended September 30, 2016, we incurred severance costs of $50 million, which were recorded in operating costs and expenses in our Filmed Entertainment segment.

Universal Studios Japan

On November 13, 2015, NBCUniversal acquired a 51% economic interest in the Universal Studios theme park in Osaka, Japan (“Universal Studios Japan”) for $1.5 billion.

Universal Studios Japan is a VIE based on the governance structure and we consolidate Universal Studios Japan as we have the power to direct activities that most significantly impact its economic performance. There are no liquidity arrangements, guarantees, or other financial commitments between us and Universal Studios Japan, and therefore our maximum risk of financial loss is NBCUniversal’s 51% interest. Universal Studios Japan’s results of operations are reported in our Theme Parks segment following the acquisition date.

Preliminary Allocation of Purchase Price

The acquired assets and liabilities of Universal Studios Japan and the 49% noncontrolling interest were recorded at their estimated fair values. During the nine months ended September 30, 2016, we updated the preliminary allocation of purchase price for Universal Studios Japan based on valuation analyses, which primarily resulted in increases to property and equipment and intangible assets and a decrease in goodwill. The changes did not have a material impact on our consolidated financial statements. We may adjust these amounts further as valuations are finalized and we obtain information necessary to complete the analyses, but no later than one year from the acquisition date.

The table below presents the preliminary allocation of the purchase price to the assets and liabilities of Universal Studios Japan.

Preliminary Allocation of Purchase Price
(in millions)
Property and equipment	$	780
Intangible assets		323
Working capital		(33)
Debt		(3,271)
Other noncurrent assets and liabilities		22
Identifiable net assets (liabilities) acquired		(2,179)
Noncontrolling interest		(1,440)
Goodwill		5,118
Cash consideration transferred	$	1,499

Actual and Unaudited Pro Forma Results

Our consolidated revenue for the three and nine months ended September 30, 2016 included $424 million and $1.1 billion, respectively, from the acquisition of Universal Studios Japan. Our consolidated net income attributable to Comcast Corporation for the three and nine months ended September 30, 2016 included $48 million and $76 million, respectively, from the acquisition of Universal Studios Japan.

The following unaudited pro forma information has been presented as if the acquisition of Universal Studios Japan occurred on January 1, 2014. This information is primarily based on historical results of operations and is subject to change as valuations are finalized. In addition, the unaudited pro forma accounting adjustments are not necessarily indicative of what our results would have been had we operated Universal Studios Japan since January 1, 2014. No pro forma adjustments have been made for our transaction-related expenses.

Unaudited Pro Forma Results
	Three Months Ended		Nine Months Ended
(in millions, except per share amounts)	September 30, 2015		September 30, 2015
Revenue	$	19,013	$	56,147
Net income	$	2,113	$	6,498
Net income attributable to Comcast Corporation	$	2,033	$	6,263
Basic earnings per common share attributable to Comcast Corporation shareholders	$	0.82	$	2.51
Diluted earnings per common share attributable to Comcast Corporation shareholders	$	0.81	$	2.48

NBCUniversal Media LLC [Member]

Significant Transactions

Note 3: Significant Transactions

DreamWorks

On August 22, 2016, Comcast acquired all of the outstanding stock of DreamWorks Animation SKG, Inc. (“DreamWorks”) for $3.8 billion. DreamWorks’ stockholders received $41 in cash for each share of DreamWorks common stock. DreamWorks creates animated feature films, television series and specials, live entertainment and related consumer products.

Following the acquisition, Comcast converted DreamWorks to a limited liability company and contributed its equity, as well as cash to settle a tax receivable agreement that DreamWorks had previously entered into with one of its former stockholders (the “tax receivable agreement”), to us as capital contributions. The net assets contributed to us excluded deferred income taxes and other tax-related items recorded by Comcast. The results of operations for DreamWorks are reported in our Filmed Entertainment segment following the acquisition date and are presented as if the equity contribution occurred on the date of Comcast’s acquisition.

The transaction is accounted for under the acquisition method of accounting and, accordingly, the assets and liabilities are to be recorded at their fair market values as of the acquisition date. Due to the limited amount of time since the acquisition date, the assets and liabilities of DreamWorks were recorded based primarily on their historical carrying values. We recorded the debt we assumed from DreamWorks at its estimated fair value of $381 million and we recorded a liability for the tax receivable agreement at its estimated fair value of $146 million. The fair value of the assumed debt was primarily based on quoted market values. The fair value of the tax receivable agreement was based on the contractual settlement provisions in the agreement and the value is subject to adjustment. The remaining assets and liabilities primarily consisted of goodwill and film and television costs. We will adjust the remaining assets and liabilities to fair value as valuations are completed and we obtain information necessary to complete the analyses, but no later than one year from the acquisition date. For purposes of the preliminary allocation of purchase price, the excess of the total transaction value over the recorded values of the net assets acquired has been recorded as goodwill.

Universal Studios Japan

On November 13, 2015, we acquired a 51% economic interest in the Universal Studios theme park in Osaka, Japan (“Universal Studios Japan”) for $1.5 billion.

Universal Studios Japan is a VIE based on the governance structure and we consolidate Universal Studios Japan as we have the power to direct activities that most significantly impact its economic performance. There are no liquidity arrangements, guarantees, or other financial commitments between us and Universal Studios Japan, and therefore our maximum risk of financial loss is our 51% interest. Universal Studios Japan’s results of operations are reported in our Theme Parks segment following the acquisition date.

Preliminary Allocation of Purchase Price

The table below presents the preliminary allocation of the purchase price to the assets and liabilities of Universal Studios Japan.

Preliminary Allocation of Purchase Price
(in millions)
Property and equipment	$	780
Intangible assets		323
Working capital		(33)
Debt		(3,271)
Other noncurrent assets and liabilities		22
Identifiable net assets (liabilities) acquired		(2,179)
Noncontrolling interest		(1,440)
Goodwill		5,118
Cash consideration transferred	$	1,499

Actual and Unaudited Pro Forma Results

Our consolidated revenue for the three and nine months ended September 30, 2016 included $424 million and $1.1 billion, respectively, from the acquisition of Universal Studios Japan. Our consolidated net income attributable to NBCUniversal for the three and nine months ended September 30, 2016 included $48 million and $76 million, respectively, from the acquisition of Universal Studios Japan.

Unaudited Pro Forma Results
	Three Months Ended		Nine Months Ended
(in millions)	September 30, 2015		September 30, 2015
Revenue	$	7,495	$	21,867
Net income	$	1,034	$	2,965
Net income attributable to NBCUniversal	$	964	$	2,762

Related Party Transactions

9 Months Ended

Sep. 30, 2016

NBCUniversal Media LLC [Member]

Related Party Transactions

Note 4: Related Party Transactions

In the ordinary course of our business, we enter into transactions with Comcast.

We generate revenue from Comcast primarily from the distribution of our cable network programming, the fees received under retransmission consent agreements in our Broadcast Television segment and, to a lesser extent, the sale of advertising and our owned programming, and we incur expenses primarily related to advertising and various support services provided by Comcast to us.

In September 2016, as part of the Comcast cash management process, we and Comcast amended and restated our revolving credit agreements to increase the amount that we can borrow from Comcast and that Comcast can borrow from us from $3 billion to $5 billion and extended the maturity date to 2026. Amounts owed by us to Comcast or to us by Comcast under the revolving credit agreement, including accrued interest, are presented under the captions “note payable to Comcast” and “note receivable from Comcast,” respectively, in our condensed consolidated balance sheet. The revolving credit agreements bear interest at floating rates equal to the interest rate calculation under Comcast’s revolving credit facility. The interest rate on Comcast’s revolving credit facility consists of a base rate plus a borrowing margin that is determined based on Comcast’s credit rating. As of September 30, 2016, the borrowing margin for our London Interbank Offered Rate-based borrowings was 1.00%.

Comcast is also the counterparty to one of our contractual obligations. As of September 30, 2016, the carrying value of the liability associated with this contractual obligation was $383 million.

The following tables present transactions with Comcast and its consolidated subsidiaries that are included in our condensed consolidated financial statements.

Condensed Consolidated Balance Sheet
		September 30,		December 31,
(in millions)		2016			2015
Transactions with Comcast and Consolidated Subsidiaries
	Receivables, net	$	317	$	239
	Accounts payable and accrued expenses related to trade creditors	$	48	$	68
	Accrued expenses and other current liabilities	$	9	$	51
	Note payable to Comcast	$	2,882	$	1,750
	Other noncurrent liabilities	$	389	$	383

Condensed Consolidated Statement of Income
			Three Months Ended				Nine Months Ended
		September 30				September 30
(in millions)			2016		2015		2016		2015
Transactions with Comcast and Consolidated Subsidiaries
	Revenue	$	522	$	334	$	1,335	$	1,006
	Operating costs and expenses	$	(53)	$	(71)	$	(157)	$	(164)
	Other income (expense)	$	(18)	$	(7)	$	(48)	$	(25)

- Definition

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

+ References + Details

Film and Television Costs

9 Months Ended

Sep. 30, 2016

Film And Television Costs Disclosure [Text Block]

Note 5: Film and Television Costs

			September 30,		December 31,
(in millions)			2016		2015
Film Costs:
	Released, less amortization	$	1,586	$	1,275
	Completed, not released		222		226
	In production and in development		1,402		907
			3,210		2,408
Television Costs:
	Released, less amortization		1,839		1,573
	In production and in development		886		737
			2,725		2,310
Programming rights, less amortization			2,587		2,350
			8,522		7,068
Less: Current portion of programming rights			1,369		1,213
Film and television costs		$	7,153	$	5,855

NBCUniversal Media LLC [Member]

Film And Television Costs Disclosure [Text Block]

Note 5: Film and Television Costs

			September 30,		December 31,
(in millions)			2016		2015
Film Costs:
	Released, less amortization	$	1,586	$	1,275
	Completed, not released		222		226
	In production and in development		1,402		907
			3,210		2,408
Television Costs:
	Released, less amortization		1,839		1,573
	In production and in development		886		737
			2,725		2,310
Programming rights, less amortization			2,572		2,329
			8,507		7,047
Less: Current portion of programming rights			1,362		1,200
Film and television costs		$	7,145	$	5,847

Investments

9 Months Ended

Sep. 30, 2016

Investments

Note 6: Investments

			September 30,		December 31,
(in millions)			2016		2015
Fair Value Method		$	166	$	167
Equity Method:
	Atairos		363		-
	Hulu		286		184
	Other		563		494
			1,212		678
Cost Method:
	AirTouch		1,595		1,583
	Other		938		902
			2,533		2,485
Total investments			3,911		3,330
Less: Current investments			54		106
Noncurrent investments		$	3,857	$	3,224

Investment Income (Loss), Net
		Three Months Ended				Nine Months Ended
		September 30				September 30
(in millions)		2016		2015		2016		2015
Gains on sales and exchanges of investments, net		$	24	$	3	$	39	$	7
Investment impairment losses			(7)		(15)		(28)		(46)
Unrealized gains (losses) on securities underlying prepaid
	forward sale agreements		-		-		-		42
Mark to market adjustments on derivative component of prepaid
	forward sale agreements and indexed debt instruments		(4)		(5)		(3)		(42)
Interest and dividend income			31		27		91		83
Other, net			36		(36)		69		(20)
Investment income (loss), net		$	80	$	(26)	$	168	$	24

Equity Method

The Weather Channel

On January 29, 2016, following a legal restructuring at The Weather Channel, we and the other investors sold the entity holding The Weather Channel’s product and technology businesses to IBM. Following the close of the transaction, we continue to hold an investment in The Weather Channel cable network through a new holding company. As a result of the sale of our investment, we recognized a pretax gain for the nine months ended September 30, 2016 of $108 million in other income (expense), net.

During the nine months ended September 30, 2015, The Weather Channel recorded an impairment charge related to goodwill. We recorded an expense of $252 million that represents NBCUniversal’s proportionate share of this impairment charge in equity in net income (losses) of investees, net in our condensed consolidated statement of income.

Atairos

In 2015, we entered into an agreement to establish Atairos Group, Inc. (“Atairos”), a strategic company focused on investing in and operating companies in a range of industries and business sectors, both domestically and internationally. The agreement became effective as of January 1, 2016. Atairos has a term of up to 12 years and is controlled by management companies led by our former CFO through interests that carry all of the voting rights. We are the only investor other than our former CFO and the other management company employees. We have committed to fund up to $4 billion in the aggregate at any one time in Atairos, subject to certain offsets, and $40 million annually to fund a management fee, subject to certain adjustments, while the management company investors have committed to fund up to $100 million (with at least $40 million to be funded by our former CFO, subject to his continued role with Atairos). Our economic interests do not carry voting rights and obligate us to absorb approximately 99% of any losses and provide us the right to receive approximately 86.5% of any residual returns in Atairos, in either case on a cumulative basis.

We have concluded that Atairos is a VIE, that we do not have the power to direct the activities that most significantly impact the economic performance of Atairos as we have no voting rights and only certain consent rights, and that we are not a related party with our former CFO or the management companies. We therefore do not consolidate Atairos and account for this investment as an equity method investment. There are no other liquidity arrangements, guarantees, or other financial commitments between Comcast and Atairos, and therefore our maximum risk of financial loss is our investment balance and remaining unfunded capital commitment.

For the nine months ended September 30, 2016, we made capital contributions totaling $399 million to Atairos.

Hulu

In August 2016, Time Warner Inc. acquired a 10% interest in Hulu, LLC (“Hulu”), which diluted our interest in Hulu from 33% to 30%. For a period not to exceed three years, Time Warner may put its shares to Hulu or Hulu may call Time Warner’s shares under certain limited circumstances arising from regulatory review. Given the contingent nature of the put and call options, we recorded a deferred gain of $159 million and a corresponding increase to our investment in Hulu as a result of the dilution. The deferred gain will be recognized in other income (expense), net if and when the options expire unexercised.

For the three and nine months ended September 30, 2016, we recognized our proportionate share of losses of $43 million and $108 million, respectively, related to our investment in Hulu. For the three and nine months ended September 30, 2015, we recognized our proportionate share of losses of $19 million and $43 million, respectively, related to our investment in Hulu.

Cost Method

AirTouch

We hold two series of preferred stock of Verizon Americas, Inc., formerly known as AirTouch Communications, Inc. (“AirTouch”), a subsidiary of Verizon Communications Inc., which are redeemable in April 2020. As of September 30, 2016, the estimated fair value of the AirTouch preferred stock and the estimated fair value of the associated liability related to the redeemable subsidiary preferred shares issued by one of our consolidated subsidiaries were each $1.7 billion. The estimated fair values are based on Level 2 inputs that use pricing models whose inputs are derived primarily from or corroborated by observable market data through correlation or other means for substantially the full term of the financial instrument.

NBCUniversal Media LLC [Member]

Investments

Note 6: Investments

			September 30,		December 31,
(in millions)			2016		2015
Fair Value Method		$	5	$	10
Equity Method:
	Hulu		286		184
	Other		367		313
			653		497
Cost Method			493		458
Total investments		$	1,151	$	965

Equity Method

The Weather Channel

During the nine months ended September 30, 2015, The Weather Channel recorded an impairment charge related to goodwill. We recorded an expense of $252 million that represents our proportionate share of this impairment charge in equity in net income (losses) of investees, net in our condensed consolidated statement of income.

Hulu

Goodwill

9 Months Ended

Sep. 30, 2016

Goodwill

Note 7: Goodwill

			NBCUniversal
(in millions)		Cable Communications		Cable Networks		Broadcast Television		Filmed Entertainment		Theme Parks		Corporate and Other		Total
Balance, December 31, 2015	$	12,389	$	12,947	$	806	$	267	$	6,344	$	192	$	32,945
Acquisitions		73		247		-		2,560		-		-		2,880
Adjustments		175		-		-		2		(255)		(181)		(259)
Foreign currency translation		-		5		-		10		1,071		-		1,086
Balance, September 30, 2016	$	12,637	$	13,199	$	806	$	2,839	$	7,160	$	11	$	36,652

Acquisitions during the nine months ended September 30, 2016 included the DreamWorks acquisition in our Filmed Entertainment segment (see Note 4 for additional information). Adjustments to goodwill during the nine months ended September 30, 2016 included the updated preliminary allocation of the purchase price for Universal Studios Japan in our Theme Parks segment and the reclassification of certain operations and businesses from Corporate and Other to our Cable Communications segment.

NBCUniversal Media LLC [Member]

Goodwill

Note 7: Goodwill

(in millions)		Cable Networks		Broadcast Television		Filmed Entertainment		Theme Parks		Total
Balance, December 31, 2015	$	12,947	$	806	$	267	$	6,344	$	20,364
Acquisitions		247		-		2,560		-		2,807
Adjustments		-		-		2		(255)		(253)
Foreign currency translation		5		-		10		1,071		1,086
Balance, September 30, 2016	$	13,199	$	806	$	2,839	$	7,160	$	24,004

Acquisitions during the nine months ended September 30, 2016 included the DreamWorks acquisition in our Filmed Entertainment segment (see Note 3 for additional information). Adjustments to goodwill during the nine months ended September 30, 2016 included the updated preliminary allocation of the purchase price for Universal Studios Japan in our Theme Parks segment.

Long-Term Debt	9 Months Ended
Long-Term Debt	Sep. 30, 2016
Long-Term Debt	Note 8: Long-Term Debt As of September 30, 2016, our debt had a carrying value of $60.4 billion and an estimated fair value of $69.4 billion. The estimated fair value of our publicly traded debt is primarily based on Level 1 inputs that use quoted market values for the debt. The estimated fair value of debt for which there are no quoted market prices is based on Level 2 inputs that use interest rates available to us for debt with similar terms and remaining maturities. Debt Borrowings and Repayments In July 2016, we issued $700 million aggregate principal amount of 1.625% senior notes due 2022, $1.4 billion aggregate principal amount of 2.35% senior notes due 2027, $1.0 billion aggregate principal amount of 3.20% senior notes due 2036 and $1.4 billion aggregate principal amount of 3.40% senior notes due 2046. The proceeds from this offering were primarily used to fund our acquisition of DreamWorks. In May 2016, we issued $1.43 billion aggregate principal amount of 4.05% senior notes due 2046. In February and March 2016, we issued $1.1 billion aggregate principal amount of 2.75% senior notes due 2023 and $2.2 billion aggregate principal amount of 3.15% senior notes due 2026. Following our acquisition of DreamWorks, we paid $381 million to settle all of the debt we assumed in the DreamWorks acquisition. In June 2016, we repaid at maturity $750 million aggregate principal amount of 4.95% senior notes due 2016. In April 2016, we repaid at maturity $1 billion aggregate principal amount of 2.875% senior notes due 2016 and $700 million aggregate principal amount of NBCUniversal Enterprise Inc.’s (“NBCUniversal Enterprise”) senior notes due 2016. Revolving Credit Facilities In May 2016, we entered into a new $7 billion revolving credit facility due 2021 with a syndicate of banks (“Comcast revolving credit facility”) that may be used for general corporate purposes. We may increase the commitment under the Comcast revolving credit facility up to a total of $10 billion, as well as extend the expiration date to a date no later than 2023, subject to approval of the lenders. In addition, NBCUniversal Enterprise entered into a new $1.5 billion revolving credit facility due 2021 with a syndicate of banks (“NBCUniversal Enterprise revolving credit facility”) that may be used for general corporate purposes. We may increase the commitment under the NBCUniversal Enterprise revolving credit facility up to a total of $2 billion, as well as extend the expiration date to a date no later than 2023, subject to approval of the lenders. The new revolving credit facilities replaced Comcast’s $6.25 billion and NBCUniversal Enterprise’s $1.35 billion revolving credit facilities, which were terminated in connection with the execution of the new revolving credit facilities. The interest rates on the new revolving credit facilities consist of a base rate plus a borrowing margin that is determined based on Comcast’s credit rating. As of September 30, 2016, the borrowing margin for borrowings based on the London Interbank Offered Rate was 1.00%. The terms of the new revolving credit facilities’ financial covenants and guarantees are substantially the same as those under the prior revolving credit facilities. As of September 30, 2016, amounts available under the new consolidated revolving credit facilities, net of amounts outstanding under our commercial paper programs and outstanding letters of credit, totaled $6.6 billion, which included $408 million available under NBCUniversal Enterprise’s revolving credit facility. Commercial Paper Programs As of September 30, 2016, Comcast and NBCUniversal Enterprise had $505 million and $1.1 billion, respectively, face amount of commercial paper outstanding.
NBCUniversal Media LLC [Member]
Long-Term Debt	Note 8: Long-Term Debt As of September 30, 2016, our debt, excluding the note payable to Comcast, had a carrying value of $12.1 billion and an estimated fair value of $13.6 billion. The estimated fair value of our publicly traded debt is primarily based on Level 1 inputs that use quoted market values for the debt. The estimated fair value of debt for which there are no quoted market prices is based on Level 2 inputs that use interest rates available to us for debt with similar terms and remaining maturities. Debt Repayments Following Comcast’s acquisition of DreamWorks, we paid $381 million to settle all of the debt we assumed in the DreamWorks acquisition. In April 2016, we repaid at maturity $1 billion aggregate principal amount of 2.875% senior notes due 2016. Cross-Guarantee Structure We, Comcast and a 100% owned cable holding company subsidiary of Comcast (“CCCL Parent”) have fully and unconditionally guaranteed each other’s debt securities, including the $7 billion Comcast revolving credit facility due 2021. As of September 30, 2016, we guaranteed $43.5 billion of outstanding debt securities of Comcast and CCCL Parent. We do not, however, guarantee the obligations of NBCUniversal Enterprise with respect to its $3.3 billion aggregate principal amount of senior notes, $1.5 billion revolving credit facility, commercial paper program, or $725 million liquidation preference of Series A cumulative preferred stock.

Fair Value Measurements

9 Months Ended

Sep. 30, 2016

Fair Value Measurements

Note 9: Fair Value Measurements

The accounting guidance related to financial assets and financial liabilities (“financial instruments”) establishes a hierarchy that prioritizes fair value measurements based on the types of inputs used for the various valuation techniques (market approach, income approach and cost approach). Level 1 consists of financial instruments whose values are based on quoted market prices for identical financial instruments in an active market. Level 2 consists of financial instruments that are valued using models or other valuation methodologies. These models use inputs that are observable either directly or indirectly. Level 3 consists of financial instruments whose values are determined using pricing models that use significant inputs that are primarily unobservable, discounted cash flow methodologies or similar techniques, as well as instruments for which the determination of fair value requires significant management judgment or estimation. Our financial instruments that are accounted for at fair value on a recurring basis are presented in the table below.

Recurring Fair Value Measurements
	Fair Value as of
	September 30,								December 31,
	2016								2015
(in millions)		Level 1		Level 2		Level 3		Total		Total
Assets
Trading securities	$	5	$	-	$	-	$	5	$	22
Available-for-sale securities		-		126		11		137		133
Interest rate swap agreements		-		43		-		43		53
Other		-		6		24		30		17
Total	$	5	$	175	$	35	$	215	$	225
Liabilities
Other	$	-	$	212	$	-	$	212	$	91
Total	$	-	$	212	$	-	$	212	$	91

Fair Value of Redeemable Subsidiary Preferred Stock

As of September 30, 2016, the fair value of the NBCUniversal Enterprise redeemable subsidiary preferred stock was $757 million. The estimated fair value is based on Level 2 inputs that use pricing models whose inputs are derived primarily from or corroborated by observable market data through correlation or other means for substantially the full term of the financial instrument.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Share-Based Compensation

9 Months Ended

Sep. 30, 2016

Share-Based Compensation

Note 10: Share-Based Compensation

Our share-based compensation plans primarily consist of awards of RSUs and stock options to certain employees and directors as part of our approach to long-term incentive compensation. Additionally, through our employee stock purchase plans, employees are able to purchase shares of Comcast Class A common stock at a discount through payroll deductions.

In March 2016, we granted 5.9 million RSUs and 20.7 million stock options related to our annual management awards. The weighted-average fair values associated with these grants were $59.50 per RSU and $11.45 per stock option.

Recognized Share-Based Compensation Expense
	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions)	2016		2015		2016		2015
Restricted share units	$	77	$	67	$	236	$	205
Stock options		48		40		133		118
Employee stock purchase plans		6		6		22		20
Total	$	131	$	113	$	391	$	343

As of September 30, 2016, we had unrecognized pretax compensation expense of $771 million and $425 million related to nonvested RSUs and nonvested stock options, respectively.

NBCUniversal Media LLC [Member]

Share-Based Compensation

Note 9: Share-Based Compensation

Comcast maintains share-based compensation plans that primarily consist of awards of restricted share units and stock options to certain employees and directors as part of its approach to long-term incentive compensation. Additionally, through its employee stock purchase plans, employees are able to purchase shares of Comcast Class A common stock at a discount through payroll deductions. Certain of our employees participate in these plans and the expense associated with their participation is settled in cash with Comcast.

Recognized Share-Based Compensation Expense
	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions)	2016		2015		2016		2015
Restricted share units	$	19	$	20	$	64	$	61
Stock options		3		3		7		8
Employee stock purchase plans		1		1		6		5
Total	$	23	$	24	$	77	$	74

Supplemental Financial Information

9 Months Ended

Sep. 30, 2016

Supplemental Financial Information

Note 11: Supplemental Financial Information

Receivables
	September 30,		December 31,
(in millions)	2016		2015
Receivables, gross	$	8,090	$	7,595
Less: Allowance for returns and customer incentives		289		473
Less: Allowance for doubtful accounts		268		226
Receivables, net	$	7,533	$	6,896

Accumulated Other Comprehensive Income (Loss)
	September 30,		September 30,
(in millions)	2016		2015
Unrealized gains (losses) on marketable securities	$	2	$	1
Deferred gains (losses) on cash flow hedges		(52)		(29)
Unrecognized gains (losses) on employee benefit obligations		8		(54)
Cumulative translation adjustments		76		(113)
Accumulated other comprehensive income (loss), net of deferred taxes	$	34	$	(195)

Net Cash Provided by Operating Activities
		Nine Months Ended
		September 30
(in millions)		2016		2015
Net income		$	6,628	$	6,357
Adjustments to reconcile net income to net cash provided by operating activities:
	Depreciation and amortization		7,062		6,410
	Share-based compensation		495		430
	Noncash interest expense (income), net		172		147
	Equity in net (income) losses of investees, net		64		202
	Cash received from investees		58		139
	Net (gain) loss on investment activity and other		(159)		(344)
	Deferred income taxes		985		67
Changes in operating assets and liabilities, net of effects of acquisitions and divestitures:
	Current and noncurrent receivables, net		(315)		(322)
	Film and television costs, net		(593)		(65)
	Accounts payable and accrued expenses related to trade creditors		46		169
	Other operating assets and liabilities		(946)		623
Net cash provided by operating activities		$	13,497	$	13,813

Cash Payments for Interest and Income Taxes
	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions)		2016		2015		2016		2015
Interest	$	808	$	673	$	2,043	$	1,914
Income taxes	$	1,031	$	1,146	$	2,716	$	3,145

Noncash Investing and Financing Activities

During the nine months ended September 30, 2016:

• we acquired $1.3 billion of property and equipment and intangible assets that were accrued but unpaid

• we recorded a liability of $658 million for a quarterly cash dividend of $0.275 per common share to be paid in October 2016

NBCUniversal Media LLC [Member]

Supplemental Financial Information

Note 10: Supplemental Financial Information

Receivables
	September 30,		December 31,
(in millions)	2016		2015
Receivables, gross	$	6,425	$	5,949
Less: Allowance for returns and customer incentives		286		469
Less: Allowance for doubtful accounts		89		69
Receivables, net	$	6,050	$	5,411

Accumulated Other Comprehensive Income (Loss)
	September 30,		September 30,
(in millions)	2016		2015
Deferred gains (losses) on cash flow hedges	$	(8)	$	8
Unrecognized gains (losses) on employee benefit obligations		3		(39)
Cumulative translation adjustments		121		(180)
Accumulated other comprehensive income (loss)	$	116	$	(211)

Net Cash Provided by Operating Activities
		Nine Months Ended
		September 30
(in millions)		2016		2015
Net income		$	3,424	$	2,824
Adjustments to reconcile net income to net cash provided by operating activities:
	Depreciation and amortization		1,324		1,149
	Equity in net (income) losses of investees, net		55		241
	Cash received from investees		45		43
	Net (gain) loss on investment activity and other		(72)		14
	Deferred income taxes		139		(35)
Changes in operating assets and liabilities, net of effects of acquisitions and divestitures:
	Current and noncurrent receivables, net		(338)		(346)
	Film and television costs, net		(600)		(74)
	Accounts payable and accrued expenses related to trade creditors		(114)		97
	Other operating assets and liabilities		(524)		405
Net cash provided by operating activities		$	3,339	$	4,318

Cash Payments for Interest and Income Taxes
	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions)		2016		2015		2016		2015
Interest	$	69	$	35	$	354	$	277
Income taxes	$	33	$	56	$	155	$	141

Noncash Investing and Financing Activities

During the nine months ended September 30, 2016:

• we acquired $211 million of property and equipment and intangible assets that were accrued but unpaid

• Comcast contributed the net assets of DreamWorks to us, which was primarily a noncash transaction (see Note 3)

Commitments and Contingencies

9 Months Ended

Sep. 30, 2016

Commitments and Contingencies

Note 12: Commitments and Contingencies

Contingencies

We are a defendant in several unrelated lawsuits claiming infringement of various patents relating to various aspects of our businesses. In certain of these cases other industry participants are also defendants, and also in certain of these cases we expect that any potential liability would be in part or in whole the responsibility of our equipment and technology vendors under applicable contractual indemnification provisions.

We are also subject to other legal proceedings and claims that arise in the ordinary course of our business. While the amount of ultimate liability with respect to such actions is not expected to materially affect our results of operations, cash flows or financial position, any litigation resulting from any such legal proceedings or claims could be time-consuming and injure our reputation.

Financial Data by Business Segment

9 Months Ended

Sep. 30, 2016

Financial Data by Business Segment

Note 13: Financial Data by Business Segment

We present our operations in five reportable business segments:

• Cable Communications: Consists of the operations of Comcast Cable, which is one of the nation’s largest providers of video, high-speed Internet and voice services to residential customers under the XFINITY brand; we also provide these and other services to business customers and sell advertising.

• Cable Networks: Consists primarily of our national cable networks, our regional sports and news networks, our international cable networks and our cable television studio production operations.

• Broadcast Television: Consists primarily of the NBC and Telemundo broadcast networks, our NBC and Telemundo owned local broadcast television stations, the NBC Universo national cable network, and our broadcast television studio production operations.

• Theme Parks: Consists primarily of our Universal theme parks in Orlando, Florida; Hollywood, California; and Osaka, Japan.

In evaluating the profitability of our operating segments, the components of net income (loss) below operating income (loss) before depreciation and amortization are not separately evaluated by our management. Our financial data by business segment is presented in the tables below.

		Three Months Ended September 30, 2016
(in millions)			Revenue^(g)		Operating Income (Loss) Before Depreciation and Amortization^(h)		Depreciation and Amortization		Operating Income (Loss)		Capital Expenditures
Cable Communications^(a)(b)		$	12,557	$	4,986	$	1,929	$	3,057	$	2,044
NBCUniversal
	Cable Networks^(c)		2,942		893		184		709		7
	Broadcast Television^(c)		3,087		378		27		351		28
	Filmed Entertainment		1,792		353		13		340		6
	Theme Parks^(d)		1,440		706		130		576		228
	Headquarters and Other^(e)		1		(183)		91		(274)		67
	Eliminations^(f)		(84)		(1)		-		(1)		-
NBCUniversal			9,178		2,146		445		1,701		336
Corporate and Other^(b)			168		(223)		21		(244)		26
Eliminations^(d)(f)			(584)		(74)		-		(74)		-
Comcast Consolidated		$	21,319	$	6,835	$	2,395	$	4,440	$	2,406

		Three Months Ended September 30, 2015
(in millions)			Revenue^(g)		Operating Income (Loss) Before Depreciation and Amortization^(h)		Depreciation and Amortization		Operating Income (Loss)		Capital Expenditures
Cable Communications^(a)(b)		$	11,751	$	4,726	$	1,782	$	2,944	$	1,853
NBCUniversal
	Cable Networks		2,412		835		193		642		9
	Broadcast Television		1,971		150		26		124		28
	Filmed Entertainment		1,946		376		8		368		2
	Theme Parks^(d)		896		434		72		362		156
	Headquarters and Other^(e)		5		(164)		81		(245)		94
	Eliminations^(f)		(79)		2		-		2		-
NBCUniversal			7,151		1,633		380		1,253		289
Corporate and Other^(b)			167		(211)		21		(232)		23
Eliminations^(d)(f)			(400)		36		-		36		-
Comcast Consolidated		$	18,669	$	6,184	$	2,183	$	4,001	$	2,165

		Nine Months Ended September 30, 2016
(in millions)			Revenue^(g)		Operating Income (Loss) Before Depreciation and Amortization^(h)		Depreciation and Amortization		Operating Income (Loss)		Capital Expenditures
Cable Communications^(a)(b)		$	37,205	$	14,923	$	5,676	$	9,247	$	5,501
NBCUniversal
	Cable Networks^(c)		7,961		2,793		561		2,232		15
	Broadcast Television^(c)		7,299		1,056		89		967		77
	Filmed Entertainment		4,526		576		33		543		14
	Theme Parks^(d)		3,602		1,550		373		1,177		668
	Headquarters and Other^(e)		10		(518)		268		(786)		217
	Eliminations^(f)		(256)		-		-		-		-
NBCUniversal			23,142		5,457		1,324		4,133		991
Corporate and Other^(b)			547		(668)		62		(730)		70
Eliminations^(d)(f)			(1,516)		(55)		-		(55)		-
Comcast Consolidated		$	59,378	$	19,657	$	7,062	$	12,595	$	6,562

		Nine Months Ended September 30, 2015
(in millions)			Revenue^(g)		Operating Income (Loss) Before Depreciation and Amortization^(h)		Depreciation and Amortization		Operating Income (Loss)		Capital Expenditures
Cable Communications^(a)(b)		$	34,932	$	14,161	$	5,194	$	8,967	$	4,977
NBCUniversal
	Cable Networks		7,221		2,605		588		2,017		20
	Broadcast Television^(c)		6,032		563		85		478		53
	Filmed Entertainment		5,658		1,091		19		1,072		7
	Theme Parks^(d)		2,320		1,012		214		798		484
	Headquarters and Other^(e)		12		(473)		243		(716)		265
	Eliminations^(f)		(258)		2		-		2		-
NBCUniversal			20,985		4,800		1,149		3,651		829
Corporate and Other^(b)			524		(651)		67		(718)		56
Eliminations^(d)(f)			(1,176)		96		-		96		-
Comcast Consolidated		$	55,265	$	18,406	$	6,410	$	11,996	$	5,862

(a) For the three and nine months ended September 30, 2016 and 2015, Cable Communications segment revenue was derived from the following sources:

		Three Months Ended				Nine Months Ended
		September 30				September 30
		2016		2015		2016		2015
Residential:
	Video	44.5	%	45.5	%	44.9	%	46.1	%
	High-speed Internet	27.1	%	26.6	%	27.0	%	26.5	%
	Voice	7.0	%	7.7	%	7.2	%	7.8	%
Business services		11.1	%	10.3	%	10.9	%	10.0	%
Advertising		5.1	%	5.0	%	4.8	%	4.8	%
Other		5.2	%	4.9	%	5.2	%	4.8	%
Total		100	%	100	%	100	%	100	%

Subscription revenue received from customers who purchase bundled services at a discounted rate is allocated proportionally to each service based on the individual service’s price on a stand-alone basis.

For both the three and nine months ended September 30, 2016 and 2015, 2.8% of Cable Communications segment revenue was derived from franchise and other regulatory fees.

(b) Beginning in the first quarter of 2016, certain operations and businesses, including several strategic business initiatives, that were previously presented in Corporate and Other are now presented in our Cable Communications segment to reflect a change in our management reporting presentation. For segment reporting purposes, we have adjusted all periods presented to reflect this change.

(c) The revenue and operating costs and expenses associated with our broadcast of the 2016 Rio Olympics were reported in our Cable Networks and Broadcast Television segments. The revenue and operating costs and expenses associated with our broadcast of the 2015 Super Bowl were reported in our Broadcast Television segment.

(d) Beginning in the fourth quarter of 2015, we changed our method of accounting for a contractual obligation that involves an interest in the revenue of certain theme parks. As a result of the change, amounts payable based on current period revenue are presented in operating costs and expenses. Amounts paid through the third quarter of 2015 were included in other income (expense), net in our consolidated statement of income. For segment reporting purposes, we have adjusted periods prior to the fourth quarter of 2015 to reflect management reporting presentation for this expense on a consistent basis for all periods in the Theme Parks segment and total NBCUniversal, which resulted in a corresponding offsetting adjustment in Eliminations to reconcile to consolidated totals.

(e) NBCUniversal Headquarters and Other activities include costs associated with overhead, personnel costs and headquarter initiatives.

(f) Included in Eliminations are transactions that our segments enter into with one another. The most common types of transactions are the following: • our Cable Networks segment generates revenue by selling programming to our Cable Communications segment, which represents a substantial majority of the revenue elimination amount • our Broadcast Television segment generates revenue from the fees received under retransmission consent agreements with our Cable Communications segment • our Cable Communications segment generates revenue by selling advertising and by selling the use of satellite feeds to our Cable Networks segment • our Filmed Entertainment and Broadcast Television segments generate revenue by licensing content to our Cable Networks segment

(g) No single customer accounted for a significant amount of revenue in any period.

(h) We use operating income (loss) before depreciation and amortization, excluding impairment charges related to fixed and intangible assets and gains or losses on the sale of assets, if any, as the measure of profit or loss for our operating segments. This measure eliminates the significant level of noncash depreciation and amortization expense that results from the capital-intensive nature of certain of our businesses and from intangible assets recognized in business combinations. Additionally, it is unaffected by our capital structure or investment activities. We use this measure to evaluate our consolidated operating performance and the operating performance of our operating segments and to allocate resources and capital to our operating segments. It is also a significant performance measure in our annual incentive compensation programs. We believe that this measure is useful to investors because it is one of the bases for comparing our operating performance with that of other companies in our industries, although our measure may not be directly comparable to similar measures used by other companies. This measure should not be considered a substitute for operating income (loss), net income (loss) attributable to Comcast Corporation, net cash provided by operating activities, or other measures of performance or liquidity we have reported in accordance with GAAP.

NBCUniversal Media LLC [Member]

Financial Data by Business Segment

Note 11: Financial Data by Business Segment

We present our operations in four reportable business segments:

• Cable Networks: Consists primarily of our national cable networks, our regional sports and news networks, our international cable networks and our cable television studio production operations.

• Filmed Entertainment: Consists primarily of the operations of Universal Pictures, which produces, acquires, markets and distributes filmed entertainment worldwide. On August 22, 2016, Comcast acquired all of the outstanding stock of DreamWorks. The results of operations for DreamWorks are reported in our Filmed Entertainment segment following the acquisition date.

• Theme Parks: Consists primarily of our Universal theme parks in Orlando, Florida; Hollywood, California; and Osaka, Japan.

	Three Months Ended September 30, 2016
(in millions)		Revenue^(e)		Operating Income (Loss) Before Depreciation and Amortization^(f)		Depreciation and Amortization		Operating Income (Loss)		Capital Expenditures
Cable Networks^(a)	$	2,942	$	893	$	184	$	709	$	7
Broadcast Television^(a)		3,087		378		27		351		28
Filmed Entertainment		1,792		353		13		340		6
Theme Parks^(b)		1,440		706		130		576		228
Headquarters and Other^(c)		1		(183)		91		(274)		67
Eliminations^(b)(d)		(84)		(1)		-		(1)		-
Total	$	9,178	$	2,146	$	445	$	1,701	$	336

	Three Months Ended September 30, 2015
(in millions)		Revenue^(e)		Operating Income (Loss) Before Depreciation and Amortization^(f)		Depreciation and Amortization		Operating Income (Loss)		Capital Expenditures
Cable Networks	$	2,412	$	835	$	193	$	642	$	9
Broadcast Television		1,971		150		26		124		28
Filmed Entertainment		1,946		376		8		368		2
Theme Parks^(b)		896		434		72		362		156
Headquarters and Other^(c)		5		(164)		81		(245)		94
Eliminations^(b)(d)		(79)		(30)		-		(30)		-
Total	$	7,151	$	1,601	$	380	$	1,221	$	289

	Nine Months Ended September 30, 2016
(in millions)		Revenue^(e)		Operating Income (Loss) Before Depreciation and Amortization^(f)		Depreciation and Amortization		Operating Income (Loss)		Capital Expenditures
Cable Networks^(a)	$	7,961	$	2,793	$	561	$	2,232	$	15
Broadcast Television^(a)		7,299		1,056		89		967		77
Filmed Entertainment		4,526		576		33		543		14
Theme Parks^(b)		3,602		1,550		373		1,177		668
Headquarters and Other^(c)		10		(518)		268		(786)		217
Eliminations^(b)(d)		(256)		-		-		-		-
Total	$	23,142	$	5,457	$	1,324	$	4,133	$	991

	Nine Months Ended September 30, 2015
(in millions)		Revenue^(e)		Operating Income (Loss) Before Depreciation and Amortization^(f)		Depreciation and Amortization		Operating Income (Loss)		Capital Expenditures
Cable Networks	$	7,221	$	2,605	$	588	$	2,017	$	20
Broadcast Television^(a)		6,032		563		85		478		53
Filmed Entertainment		5,658		1,091		19		1,072		7
Theme Parks^(b)		2,320		1,012		214		798		484
Headquarters and Other^(c)		12		(473)		243		(716)		265
Eliminations^(b)(d)		(258)		9		-		9		-
Total	$	20,985	$	4,807	$	1,149	$	3,658	$	829

(a) The revenue and operating costs and expenses associated with our broadcast of the 2016 Rio Olympics were reported in our Cable Networks and Broadcast Television segments. The revenue and operating costs and expenses associated with our broadcast of the 2015 Super Bowl were reported in our Broadcast Television segment.

(b) Beginning in the fourth quarter of 2015, we changed our method of accounting for a contractual obligation that involves an interest in the revenue of certain theme parks. As a result of the change, amounts payable based on current period revenue are presented in operating costs and expenses. Amounts paid through the third quarter of 2015 were included in other income (expense), net in our consolidated statement of income. For segment reporting purposes, we have adjusted periods prior to the fourth quarter of 2015 to reflect management reporting presentation for this expense on a consistent basis for all periods in the Theme Parks segment, which resulted in a corresponding offsetting adjustment in Eliminations to reconcile to consolidated totals.

(c) Headquarters and Other activities include costs associated with overhead, personnel costs and headquarter initiatives.

(d) Included in Eliminations are transactions that our segments enter into with one another, which consist primarily of the licensing of film and television content from our Filmed Entertainment and Broadcast Television segments to our Cable Networks segment.

(e) No single customer accounted for a significant amount of revenue in any period.

(f) We use operating income (loss) before depreciation and amortization, excluding impairment charges related to fixed and intangible assets and gains or losses on the sale of assets, if any, as the measure of profit or loss for our operating segments. This measure eliminates the significant level of noncash amortization expense that results from intangible assets recognized in business combinations. Additionally, it is unaffected by our capital structure or investment activities. We use this measure to evaluate our consolidated operating performance and the operating performance of our operating segments and to allocate resources and capital to our operating segments. It is also a significant performance measure in our annual incentive compensation programs. We believe that this measure is useful to investors because it is one of the bases for comparing our operating performance with that of other companies in our industries, although our measure may not be directly comparable to similar measures used by other companies. This measure should not be considered a substitute for operating income (loss), net income (loss) attributable to NBCUniversal, net cash provided by operating activities, or other measures of performance or liquidity we have reported in accordance with GAAP.

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8981-108599

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
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-URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8380-108599

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8933-108599

Reference 7: http://www.xbrl.org/2003/role/presentationRef
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Reference 8: http://www.xbrl.org/2003/role/presentationRef
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-Topic 280
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Reference 9: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e9031-108599

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e9054-108599

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8538-108599

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8864-108599

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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-URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8924-108599

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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-URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8906-108599

+ Details

Condensed Consolidating Financial Information

9 Months Ended

Sep. 30, 2016

Condensed Consolidating Financial Information [Abstract]

Condensed Consolidating Financial Information

Note 14: Condensed Consolidating Financial Information

Comcast (“Comcast Parent”), Comcast Cable Communications, LLC (“CCCL Parent”), and NBCUniversal (“NBCUniversal Media Parent”) have fully and unconditionally guaranteed each other’s debt securities, including the Comcast revolving credit facility.

Comcast Parent and CCCL Parent also fully and unconditionally guarantee NBCUniversal Enterprise’s $3.3 billion of senior notes, revolving credit facility and commercial paper program. NBCUniversal Media Parent does not guarantee NBCUniversal Enterprise’s senior notes, revolving credit facility or commercial paper program.

Comcast Parent provides an unconditional subordinated guarantee of the $185 million principal amount currently outstanding of Comcast Holdings’ ZONES due October 2029. Neither CCCL Parent nor NBCUniversal Media Parent guarantee the Comcast Holdings’ ZONES due October 2029. None of Comcast Parent, CCCL Parent nor NBCUniversal Media Parent guarantee the $62 million principal amount currently outstanding of Comcast Holdings’ ZONES due November 2029 or the $3.8 billion of Universal Studios Japan term loans.

Condensed Consolidating Balance Sheet
September 30, 2016

(in millions)			Comcast Parent		Comcast Holdings		CCCL Parent		NBCUniversal Media Parent		Non-Guarantor Subsidiaries		Elimination and Consolidation Adjustments		Consolidated Comcast Corporation
Assets
	Cash and cash equivalents	$	-	$	-	$	-	$	576	$	2,231	$	-	$	2,807
	Receivables, net		-		-		-		-		7,533		-		7,533
	Programming rights		-		-		-		-		1,369		-		1,369
	Other current assets		70		-		-		16		3,433		-		3,519
Total current assets			70		-		-		592		14,566		-		15,228
Film and television costs			-		-		-		-		7,153		-		7,153
Investments			58		-		-		449		3,350		-		3,857
Investments in and amounts due from subsidiaries eliminated upon consolidation			96,542		119,137		125,719		47,218		119,344		(507,960)		-
Property and equipment, net			244		-		-		-		35,412		-		35,656
Franchise rights			-		-		-		-		59,364		-		59,364
Goodwill			-		-		-		-		36,652		-		36,652
Other intangible assets, net			10		-		-		-		17,346		-		17,356
Other noncurrent assets, net			1,388		147		-		89		2,328		(1,294)		2,658
Total assets		$	98,312	$	119,284	$	125,719	$	48,348	$	295,515	$	(509,254)	$	177,924

Liabilities and Equity
	Accounts payable and accrued expenses related to trade creditors	$	7	$	-	$	-	$	-	$	6,587	$	-	$	6,594
	Accrued participations and residuals		-		-		-		-		1,570		-		1,570
	Accrued expenses and other current liabilities		1,448		335		224		361		4,173		-		6,541
	Current portion of long-term debt		1,504		-		550		4		1,275		-		3,333
Total current liabilities			2,959		335		774		365		13,605		-		18,038
Long-term debt, less current portion			39,177		138		2,100		8,208		7,472		-		57,095
Deferred income taxes			-		561		-		93		35,017		(1,148)		34,523
Other noncurrent liabilities			2,695		-		-		1,160		7,410		(146)		11,119
Redeemable noncontrolling interests and redeemable subsidiary preferred stock			-		-		-		-		1,326		-		1,326
Equity:
	Common stock		28		-		-		-		-		-		28
	Other shareholders’ equity		53,453		118,250		122,845		38,522		228,343		(507,960)		53,453
Total Comcast Corporation
	shareholders’ equity		53,481		118,250		122,845		38,522		228,343		(507,960)		53,481
Noncontrolling interests			-		-		-		-		2,342		-		2,342
Total equity			53,481		118,250		122,845		38,522		230,685		(507,960)		55,823
Total liabilities and equity		$	98,312	$	119,284	$	125,719	$	48,348	$	295,515	$	(509,254)	$	177,924

Condensed Consolidating Balance Sheet
December 31, 2015

(in millions)			Comcast Parent		Comcast Holdings		CCCL Parent		NBCUniversal Media Parent		Non-Guarantor Subsidiaries		Elimination and Consolidation Adjustments		Consolidated Comcast Corporation
Assets
	Cash and cash equivalents	$	-	$	-	$	-	$	414	$	1,881	$	-	$	2,295
	Receivables, net		-		-		-		-		6,896		-		6,896
	Programming rights		-		-		-		-		1,213		-		1,213
	Other current assets		69		-		-		17		1,813		-		1,899
Total current assets			69		-		-		431		11,803		-		12,303
Film and television costs			-		-		-		-		5,855		-		5,855
Investments			33		-		-		430		2,761		-		3,224
Investments in and amounts due from subsidiaries eliminated upon consolidation			87,142		111,241		119,354		42,441		109,598		(469,776)		-
Property and equipment, net			210		-		-		-		33,455		-		33,665
Franchise rights			-		-		-		-		59,364		-		59,364
Goodwill			-		-		-		-		32,945		-		32,945
Other intangible assets, net			12		-		-		-		16,934		-		16,946
Other noncurrent assets, net			1,301		147		-		78		2,114		(1,368)		2,272
Total assets		$	88,767	$	111,388	$	119,354	$	43,380	$	274,829	$	(471,144)	$	166,574

Liabilities and Equity
	Accounts payable and accrued expenses related to trade creditors	$	16	$	-	$	-	$	-	$	6,199	$	-	$	6,215
	Accrued participations and residuals		-		-		-		-		1,572		-		1,572
	Accrued expenses and other current liabilities		1,789		335		290		389		3,961		-		6,764
	Current portion of long-term debt		1,149		-		-		1,005		1,473		-		3,627
Total current liabilities			2,954		335		290		1,394		13,205		-		18,178
Long-term debt, less current portion			31,106		130		2,650		8,211		6,897		-		48,994
Deferred income taxes			-		624		-		66		34,098		(1,222)		33,566
Other noncurrent liabilities			2,438		-		-		1,087		7,258		(146)		10,637
Redeemable noncontrolling interests and redeemable subsidiary preferred stock			-		-		-		-		1,221		-		1,221
Equity:
	Common stock		29		-		-		-		-		-		29
	Other shareholders’ equity		52,240		110,299		116,414		32,622		210,441		(469,776)		52,240
Total Comcast Corporation shareholders’ equity			52,269		110,299		116,414		32,622		210,441		(469,776)		52,269
Noncontrolling interests			-		-		-		-		1,709		-		1,709
Total equity			52,269		110,299		116,414		32,622		212,150		(469,776)		53,978
Total liabilities and equity		$	88,767	$	111,388	$	119,354	$	43,380	$	274,829	$	(471,144)	$	166,574

Condensed Consolidating Statement of Income
For the Three Months Ended September 30, 2016

(in millions)			Comcast Parent		Comcast Holdings		CCCL Parent		NBCUniversal Media Parent		Non-Guarantor Subsidiaries		Elimination and Consolidation Adjustments		Consolidated Comcast Corporation
Revenue:
	Service revenue	$	-	$	-	$	-	$	-	$	21,319	$	-	$	21,319
	Management fee revenue		268		-		263		-		-		(531)		-
			268		-		263		-		21,319		(531)		21,319
Costs and Expenses:
	Programming and production		-		-		-		-		7,003		-		7,003
	Other operating and administrative		194		-		263		222		5,846		(531)		5,994
	Advertising, marketing and promotion		-		-		-		-		1,487		-		1,487
	Depreciation		7		-		-		-		1,858		-		1,865
	Amortization		1		-		-		-		529		-		530
			202		-		263		222		16,723		(531)		16,879
Operating income (loss)			66		-		-		(222)		4,596		-		4,440
Other Income (Expense):
	Interest expense		(502)		(3)		(59)		(113)		(74)		-		(751)
	Investment income (loss), net		3		(4)		-		(12)		93		-		80
	Equity in net income
	(losses) of investees, net		2,519		2,385		2,134		1,644		1,255		(9,971)		(34)
	Other income (expense), net		-		-		-		(2)		(9)		-		(11)
			2,020		2,378		2,075		1,517		1,265		(9,971)		(716)
Income (loss) before income taxes			2,086		2,378		2,075		1,295		5,861		(9,971)		3,724
Income tax (expense) benefit			151		2		21		(6)		(1,568)		-		(1,400)
Net income (loss)			2,237		2,380		2,096		1,289		4,293		(9,971)		2,324
Net (income) loss attributable
	to noncontrolling interests and redeemable subsidiary preferred stock		-		-		-		-		(87)		-		(87)
Net income (loss) attributable
	to Comcast Corporation	$	2,237	$	2,380	$	2,096	$	1,289	$	4,206	$	(9,971)	$	2,237
Comprehensive income (loss)
	attributable to Comcast Corporation	$	2,270	$	2,388	$	2,096	$	1,310	$	4,235	$	(10,029)	$	2,270

Condensed Consolidating Statement of Income
For the Three Months Ended September 30, 2015

(in millions)			Comcast Parent		Comcast Holdings		CCCL Parent		NBCUniversal Media Parent		Non-Guarantor Subsidiaries		Elimination and Consolidation Adjustments		Consolidated Comcast Corporation
Revenue:
	Service revenue	$	-	$	-	$	-	$	-	$	18,669	$	-	$	18,669
	Management fee revenue		251		-		244		-		-		(495)		-
			251		-		244		-		18,669		(495)		18,669
Costs and Expenses:
	Programming and production		-		-		-		-		5,582		-		5,582
	Other operating and administrative		146		-		244		235		5,260		(495)		5,390
	Advertising, marketing and promotion		-		-		-		-		1,513		-		1,513
	Depreciation		8		-		-		-		1,689		-		1,697
	Amortization		1		-		-		-		485		-		486
			155		-		244		235		14,529		(495)		14,668
Operating income (loss)			96		-		-		(235)		4,140		-		4,001
Other Income (Expense):
	Interest expense		(428)		(3)		(65)		(111)		(52)		-		(659)
	Investment income (loss), net		3		(4)		-		(3)		(22)		-		(26)
	Equity in net income (losses) of
	investees, net		2,210		2,123		1,981		1,289		928		(8,530)		1
	Other income (expense), net		-		-		-		(7)		(46)		-		(53)
			1,785		2,116		1,916		1,168		808		(8,530)		(737)
Income (loss) before income taxes			1,881		2,116		1,916		933		4,948		(8,530)		3,264
Income tax (expense) benefit			115		2		23		(6)		(1,357)		-		(1,223)
Net income (loss)			1,996		2,118		1,939		927		3,591		(8,530)		2,041
Net (income) loss attributable
	to noncontrolling interests and redeemable subsidiary preferred stock		-		-		-		-		(45)		-		(45)
Net income (loss)
	attributable to Comcast Corporation	$	1,996	$	2,118	$	1,939	$	927	$	3,546	$	(8,530)	$	1,996
Comprehensive
	income (loss) attributable to Comcast Corporation	$	1,967	$	2,112	$	1,940	$	902	$	3,546	$	(8,500)	$	1,967

Condensed Consolidating Statement of Income
For the Nine Months Ended September 30, 2016

(in millions)			Comcast Parent		Comcast Holdings		CCCL Parent		NBCUniversal Media Parent		Non-Guarantor Subsidiaries		Elimination and Consolidation Adjustments		Consolidated Comcast Corporation
Revenue:
	Service revenue	$	-	$	-	$	-	$	-	$	59,378	$	-	$	59,378
	Management fee revenue		793		-		778		-		-		(1,571)		-
			793		-		778		-		59,378		(1,571)		59,378
Costs and Expenses:
	Programming and production		-		-		-		-		17,926		-		17,926
	Other operating and administrative		635		-		778		739		16,699		(1,571)		17,280
	Advertising, marketing and promotion		-		-		-		-		4,515		-		4,515
	Depreciation		21		-		-		-		5,497		-		5,518
	Amortization		4		-		-		-		1,540		-		1,544
			660		-		778		739		46,177		(1,571)		46,783
Operating income (loss)			133		-		-		(739)		13,201		-		12,595
Other Income (Expense):
	Interest expense		(1,431)		(9)		(179)		(342)		(225)		-		(2,186)
	Investment income (loss), net		6		(3)		-		(20)		185		-		168
	Equity in net income
	(losses) of investees, net		7,239		6,924		6,375		4,229		3,160		(27,991)		(64)
	Other income (expense), net		-		-		-		115		(11)		-		104
			5,814		6,912		6,196		3,982		3,109		(27,991)		(1,978)
Income (loss) before income taxes			5,947		6,912		6,196		3,243		16,310		(27,991)		10,617
Income tax (expense) benefit			452		4		63		(19)		(4,489)		-		(3,989)
Net income (loss)			6,399		6,916		6,259		3,224		11,821		(27,991)		6,628
Net (income) loss attributable
	to noncontrolling interests and redeemable subsidiary preferred stock		-		-		-		-		(229)		-		(229)
Net income (loss) attributable
	to Comcast Corporation	$	6,399	$	6,916	$	6,259	$	3,224	$	11,592	$	(27,991)	$	6,399
Comprehensive income (loss)
	attributable to Comcast Corporation	$	6,607	$	7,015	$	6,261	$	3,552	$	12,134	$	(28,962)	$	6,607

Condensed Consolidating Statement of Income
For the Nine Months Ended September 30, 2015

(in millions)			Comcast Parent		Comcast Holdings		CCCL Parent		NBCUniversal Media Parent		Non-Guarantor Subsidiaries		Elimination and Consolidation Adjustments		Consolidated Comcast Corporation
Revenue:
	Service revenue	$	-	$	-	$	-	$	-	$	55,265	$	-	$	55,265
	Management fee revenue		747		-		727		-		-		(1,474)		-
			747		-		727		-		55,265		(1,474)		55,265
Costs and Expenses:
	Programming and production		-		-		-		-		16,714		-		16,714
	Other operating and administrative		597		-		727		727		15,161		(1,474)		15,738
	Advertising, marketing and promotion		-		-		-		-		4,407		-		4,407
	Depreciation		23		-		-		-		4,982		-		5,005
	Amortization		4		-		-		-		1,401		-		1,405
			624		-		727		727		42,665		(1,474)		43,269
Operating income (loss)			123		-		-		(727)		12,600		-		11,996
Other Income (Expense):
	Interest expense		(1,310)		(9)		(211)		(347)		(151)		-		(2,028)
	Investment income (loss), net		4		(3)		-		(17)		40		-		24
	Equity in net income
	(losses) of investees, net		6,963		6,511		5,993		3,801		2,489		(25,959)		(202)
	Other income (expense), net		(3)		-		-		(2)		369		-		364
			5,654		6,499		5,782		3,435		2,747		(25,959)		(1,842)
Income (loss) before income taxes			5,777		6,499		5,782		2,708		15,347		(25,959)		10,154
Income tax (expense) benefit			415		4		74		(17)		(4,273)		-		(3,797)
Net income (loss)			6,192		6,503		5,856		2,691		11,074		(25,959)		6,357
Net (income) loss attributable
	to noncontrolling interests and redeemable subsidiary preferred stock		-		-		-		-		(165)		-		(165)
Net income (loss) attributable
	to Comcast Corporation	$	6,192	$	6,503	$	5,856	$	2,691	$	10,909	$	(25,959)	$	6,192
Comprehensive income (loss)
	attributable to Comcast Corporation	$	6,143	$	6,489	$	5,855	$	2,639	$	10,908	$	(25,891)	$	6,143

Condensed Consolidating Statement of Cash Flows
For the Nine Months Ended September 30, 2016
(in millions)			Comcast Parent		Comcast Holdings		CCCL Parent		NBCUniversal Media Parent		Non-Guarantor Subsidiaries		Elimination and Consolidation Adjustments		Consolidated Comcast Corporation
Net cash provided by (used in) operating activities		$	(1,129)	$	-	$	(179)	$	(1,068)	$	15,873	$	-	$	13,497
Investing Activities
	Net transactions with affiliates		(1,746)		-		179		2,150		(583)		-		-
	Capital expenditures		(9)		-		-		-		(6,553)		-		(6,562)
	Cash paid for intangible assets		(4)		-		-		-		(1,159)		-		(1,163)
	Acquisitions and construction of real estate properties		(2)		-		-		-		(301)		-		(303)
	Acquisitions, net of cash acquired		-		-		-		-		(3,904)		-		(3,904)
	Proceeds from sales of businesses and investments		-		-		-		104		84		-		188
	Purchases of investments		(23)		-		-		(9)		(586)		-		(618)
	Deposits		-		-		-		-		(1,761)		-		(1,761)
	Other		(108)		-		-		(35)		114		-		(29)
Net cash provided by (used in) investing activities			(1,892)		-		179		2,210		(14,649)		-		(14,152)
Financing Activities
	Proceeds from (repayments of) short-term borrowings, net		105		-		-		-		505		-		610
	Proceeds from borrowings		9,231		-		-		-		-		-		9,231
	Repurchases and repayments of debt		(750)		-		-		(1,005)		(1,239)		-		(2,994)
	Repurchases and retirements of common stock		(3,762)		-		-		-		-		-		(3,762)
	Dividends paid		(1,944)		-		-		-		-		-		(1,944)
	Issuances of common stock		23		-		-		-		-		-		23
	Distributions to noncontrolling interests and dividends for redeemable subsidiary preferred stock		-		-		-		-		(194)		-		(194)
	Other		118		-		-		25		54		-		197
Net cash provided by (used in) financing activities			3,021		-		-		(980)		(874)		-		1,167
Increase (decrease) in cash and cash equivalents			-		-		-		162		350		-		512
Cash and cash equivalents, beginning of period			-		-		-		414		1,881		-		2,295
Cash and cash equivalents, end of period		$	-	$	-	$	-	$	576	$	2,231	$	-	$	2,807

Condensed Consolidating Statement of Cash Flows
For the Nine Months Ended September 30, 2015
(in millions)			Comcast Parent		Comcast Holdings		CCCL Parent		NBCUniversal Media Parent		Non-Guarantor Subsidiaries		Elimination and Consolidation Adjustments		Consolidated Comcast Corporation
Net cash provided by (used in) operating activities		$	(725)	$	51	$	(24)	$	(1,019)	$	15,530	$	-	$	13,813
Investing Activities
	Net transactions with affiliates		6,786		(51)		697		2,249		(9,681)		-		-
	Capital expenditures		(19)		-		-		-		(5,843)		-		(5,862)
	Cash paid for intangible assets		(3)		-		-		-		(913)		-		(916)
	Acquisitions and construction of real estate properties		-		-		-		-		(116)		-		(116)
	Acquisitions, net of cash acquired		-		-		-		-		(286)		-		(286)
	Proceeds from sales of businesses and investments		-		-		-		1		419		-		420
	Purchases of investments		(3)		-		-		(400)		(309)		-		(712)
	Other		7		-		-		(5)		266		-		268
Net cash provided by (used in) investing activities			6,768		(51)		697		1,845		(16,463)		-		(7,204)
Financing Activities
	Proceeds from (repayments of) short-term borrowings, net		-		-		-		-		(220)		-		(220)
	Proceeds from borrowings		3,996		-		-		-		-		-		3,996
	Repurchases and repayments of debt		(2,650)		-		(673)		(1,002)		(28)		-		(4,353)
	Repurchases and retirements of common stock		(5,770)		-		-		-		-		-		(5,770)
	Dividends paid		(1,823)		-		-		-		-		-		(1,823)
	Issuances of common stock		35		-		-		-		-		-		35
	Distributions to noncontrolling interests and dividends for redeemable subsidiary preferred stock		-		-		-		-		(178)		-		(178)
	Other		169		-		-		-		(482)		-		(313)
Net cash provided by (used in) financing activities			(6,043)		-		(673)		(1,002)		(908)		-		(8,626)
Increase (decrease) in cash and cash equivalents			-		-		-		(176)		(1,841)		-		(2,017)
Cash and cash equivalents, beginning of period			-		-		-		385		3,525		-		3,910
Cash and cash equivalents, end of period		$	-	$	-	$	-	$	209	$	1,684	$	-	$	1,893

Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2016

Earnings Per Share

Computation of diluted EPS

Computation of Diluted EPS
		Three Months Ended September 30
			2016					2015
(in millions, except per share data)			Net Income Attributable to Comcast Corporation	Shares		Per Share Amount		Net Income Attributable to Comcast Corporation	Shares		Per Share Amount
Basic EPS attributable to Comcast Corporation
	shareholders	$	2,237	2,403	$	0.93	$	1,996	2,472	$	0.81
Effect of dilutive securities:
	Assumed exercise or issuance of shares relating
	to stock plans			28					30
Diluted EPS attributable to Comcast
	Corporation shareholders	$	2,237	2,431	$	0.92	$	1,996	2,502	$	0.80

		Nine Months Ended September 30
			2016					2015
(in millions, except per share data)			Net Income Attributable to Comcast Corporation	Shares		Per Share Amount		Net Income Attributable to Comcast Corporation	Shares		Per Share Amount
Basic EPS attributable to Comcast Corporation
	shareholders	$	6,399	2,419	$	2.65	$	6,192	2,498	$	2.48
Effect of dilutive securities:
	Assumed exercise or issuance of shares relating
	to stock plans			27					32
Diluted EPS attributable to Comcast
	Corporation shareholders	$	6,399	2,446	$	2.62	$	6,192	2,530	$	2.45

Significant Transactions (Tables)

9 Months Ended

Sep. 30, 2016

Preliminary Allocation of Purchase Price

Preliminary Allocation of Purchase Price
(in millions)
Property and equipment	$	780
Intangible assets		323
Working capital		(33)
Debt		(3,271)
Other noncurrent assets and liabilities		22
Identifiable net assets (liabilities) acquired		(2,179)
Noncontrolling interest		(1,440)
Goodwill		5,118
Cash consideration transferred	$	1,499

Unaudited Pro Forma Information

Unaudited Pro Forma Results
	Three Months Ended		Nine Months Ended
(in millions, except per share amounts)	September 30, 2015		September 30, 2015
Revenue	$	19,013	$	56,147
Net income	$	2,113	$	6,498
Net income attributable to Comcast Corporation	$	2,033	$	6,263
Basic earnings per common share attributable to Comcast Corporation shareholders	$	0.82	$	2.51
Diluted earnings per common share attributable to Comcast Corporation shareholders	$	0.81	$	2.48

NBCUniversal Media LLC [Member]

Preliminary Allocation of Purchase Price

Preliminary Allocation of Purchase Price
(in millions)
Property and equipment	$	780
Intangible assets		323
Working capital		(33)
Debt		(3,271)
Other noncurrent assets and liabilities		22
Identifiable net assets (liabilities) acquired		(2,179)
Noncontrolling interest		(1,440)
Goodwill		5,118
Cash consideration transferred	$	1,499

Unaudited Pro Forma Information

Unaudited Pro Forma Results
	Three Months Ended		Nine Months Ended
(in millions)	September 30, 2015		September 30, 2015
Revenue	$	7,495	$	21,867
Net income	$	1,034	$	2,965
Net income attributable to NBCUniversal	$	964	$	2,762

Related Party Transactions (Tables)

9 Months Ended

Sep. 30, 2016

NBCUniversal Media LLC [Member]

Condensed Consolidated Balance Sheet
		September 30,		December 31,
(in millions)		2016			2015
Transactions with Comcast and Consolidated Subsidiaries
	Receivables, net	$	317	$	239
	Accounts payable and accrued expenses related to trade creditors	$	48	$	68
	Accrued expenses and other current liabilities	$	9	$	51
	Note payable to Comcast	$	2,882	$	1,750
	Other noncurrent liabilities	$	389	$	383

Condensed Consolidated Statement of Income
			Three Months Ended				Nine Months Ended
		September 30				September 30
(in millions)			2016		2015		2016		2015
Transactions with Comcast and Consolidated Subsidiaries
	Revenue	$	522	$	334	$	1,335	$	1,006
	Operating costs and expenses	$	(53)	$	(71)	$	(157)	$	(164)
	Other income (expense)	$	(18)	$	(7)	$	(48)	$	(25)

Film and Television Costs (Tables)

9 Months Ended

Sep. 30, 2016

Film and Television Costs

			September 30,		December 31,
(in millions)			2016		2015
Film Costs:
	Released, less amortization	$	1,586	$	1,275
	Completed, not released		222		226
	In production and in development		1,402		907
			3,210		2,408
Television Costs:
	Released, less amortization		1,839		1,573
	In production and in development		886		737
			2,725		2,310
Programming rights, less amortization			2,587		2,350
			8,522		7,068
Less: Current portion of programming rights			1,369		1,213
Film and television costs		$	7,153	$	5,855

NBCUniversal Media LLC [Member]

Film and Television Costs

			September 30,		December 31,
(in millions)			2016		2015
Film Costs:
	Released, less amortization	$	1,586	$	1,275
	Completed, not released		222		226
	In production and in development		1,402		907
			3,210		2,408
Television Costs:
	Released, less amortization		1,839		1,573
	In production and in development		886		737
			2,725		2,310
Programming rights, less amortization			2,572		2,329
			8,507		7,047
Less: Current portion of programming rights			1,362		1,200
Film and television costs		$	7,145	$	5,847

Investments (Tables)

9 Months Ended

Sep. 30, 2016

Investment Summary

			September 30,		December 31,
(in millions)			2016		2015
Fair Value Method		$	166	$	167
Equity Method:
	Atairos		363		-
	Hulu		286		184
	Other		563		494
			1,212		678
Cost Method:
	AirTouch		1,595		1,583
	Other		938		902
			2,533		2,485
Total investments			3,911		3,330
Less: Current investments			54		106
Noncurrent investments		$	3,857	$	3,224

Investment Income (Loss), Net

Investment Income (Loss), Net
		Three Months Ended				Nine Months Ended
		September 30				September 30
(in millions)		2016		2015		2016		2015
Gains on sales and exchanges of investments, net		$	24	$	3	$	39	$	7
Investment impairment losses			(7)		(15)		(28)		(46)
Unrealized gains (losses) on securities underlying prepaid
	forward sale agreements		-		-		-		42
Mark to market adjustments on derivative component of prepaid
	forward sale agreements and indexed debt instruments		(4)		(5)		(3)		(42)
Interest and dividend income			31		27		91		83
Other, net			36		(36)		69		(20)
Investment income (loss), net		$	80	$	(26)	$	168	$	24

NBCUniversal Media LLC [Member]

Investment Summary

			September 30,		December 31,
(in millions)			2016		2015
Fair Value Method		$	5	$	10
Equity Method:
	Hulu		286		184
	Other		367		313
			653		497
Cost Method			493		458
Total investments		$	1,151	$	965

Goodwill (Tables)

9 Months Ended

Sep. 30, 2016

Schedule of Goodwill

			NBCUniversal
(in millions)		Cable Communications		Cable Networks		Broadcast Television		Filmed Entertainment		Theme Parks		Corporate and Other		Total
Balance, December 31, 2015	$	12,389	$	12,947	$	806	$	267	$	6,344	$	192	$	32,945
Acquisitions		73		247		-		2,560		-		-		2,880
Adjustments		175		-		-		2		(255)		(181)		(259)
Foreign currency translation		-		5		-		10		1,071		-		1,086
Balance, September 30, 2016	$	12,637	$	13,199	$	806	$	2,839	$	7,160	$	11	$	36,652

NBCUniversal Media LLC [Member]

Schedule of Goodwill

(in millions)		Cable Networks		Broadcast Television		Filmed Entertainment		Theme Parks		Total
Balance, December 31, 2015	$	12,947	$	806	$	267	$	6,344	$	20,364
Acquisitions		247		-		2,560		-		2,807
Adjustments		-		-		2		(255)		(253)
Foreign currency translation		5		-		10		1,071		1,086
Balance, September 30, 2016	$	13,199	$	806	$	2,839	$	7,160	$	24,004

Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2016

Fair Value Assets and Liabilities Measured on Recurring Basis

Recurring Fair Value Measurements
	Fair Value as of
	September 30,								December 31,
	2016								2015
(in millions)		Level 1		Level 2		Level 3		Total		Total
Assets
Trading securities	$	5	$	-	$	-	$	5	$	22
Available-for-sale securities		-		126		11		137		133
Interest rate swap agreements		-		43		-		43		53
Other		-		6		24		30		17
Total	$	5	$	175	$	35	$	215	$	225
Liabilities
Other	$	-	$	212	$	-	$	212	$	91
Total	$	-	$	212	$	-	$	212	$	91

Share-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2016

Recognized Share-Based Compensation Expense

Recognized Share-Based Compensation Expense
	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions)	2016		2015		2016		2015
Restricted share units	$	77	$	67	$	236	$	205
Stock options		48		40		133		118
Employee stock purchase plans		6		6		22		20
Total	$	131	$	113	$	391	$	343

NBCUniversal Media LLC [Member]

Recognized Share-Based Compensation Expense

Recognized Share-Based Compensation Expense
	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions)	2016		2015		2016		2015
Restricted share units	$	19	$	20	$	64	$	61
Stock options		3		3		7		8
Employee stock purchase plans		1		1		6		5
Total	$	23	$	24	$	77	$	74

Supplemental Financial Information (Tables)

9 Months Ended

Sep. 30, 2016

Receivables

Receivables
	September 30,		December 31,
(in millions)	2016		2015
Receivables, gross	$	8,090	$	7,595
Less: Allowance for returns and customer incentives		289		473
Less: Allowance for doubtful accounts		268		226
Receivables, net	$	7,533	$	6,896

Accumulated Other Comprehensive Income (Loss)

Accumulated Other Comprehensive Income (Loss)
	September 30,		September 30,
(in millions)	2016		2015
Unrealized gains (losses) on marketable securities	$	2	$	1
Deferred gains (losses) on cash flow hedges		(52)		(29)
Unrecognized gains (losses) on employee benefit obligations		8		(54)
Cumulative translation adjustments		76		(113)
Accumulated other comprehensive income (loss), net of deferred taxes	$	34	$	(195)

Schedule Of Adjustments To Reconcile Net Income To Net Cash Provided By Operating Activities

Net Cash Provided by Operating Activities
		Nine Months Ended
		September 30
(in millions)		2016		2015
Net income		$	6,628	$	6,357
Adjustments to reconcile net income to net cash provided by operating activities:
	Depreciation and amortization		7,062		6,410
	Share-based compensation		495		430
	Noncash interest expense (income), net		172		147
	Equity in net (income) losses of investees, net		64		202
	Cash received from investees		58		139
	Net (gain) loss on investment activity and other		(159)		(344)
	Deferred income taxes		985		67
Changes in operating assets and liabilities, net of effects of acquisitions and divestitures:
	Current and noncurrent receivables, net		(315)		(322)
	Film and television costs, net		(593)		(65)
	Accounts payable and accrued expenses related to trade creditors		46		169
	Other operating assets and liabilities		(946)		623
Net cash provided by operating activities		$	13,497	$	13,813

Cash Payments For Interest and Income Taxes

Cash Payments for Interest and Income Taxes
	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions)		2016		2015		2016		2015
Interest	$	808	$	673	$	2,043	$	1,914
Income taxes	$	1,031	$	1,146	$	2,716	$	3,145

NBCUniversal Media LLC [Member]

Receivables

Receivables
	September 30,		December 31,
(in millions)	2016		2015
Receivables, gross	$	6,425	$	5,949
Less: Allowance for returns and customer incentives		286		469
Less: Allowance for doubtful accounts		89		69
Receivables, net	$	6,050	$	5,411

Accumulated Other Comprehensive Income (Loss)

Accumulated Other Comprehensive Income (Loss)
	September 30,		September 30,
(in millions)	2016		2015
Deferred gains (losses) on cash flow hedges	$	(8)	$	8
Unrecognized gains (losses) on employee benefit obligations		3		(39)
Cumulative translation adjustments		121		(180)
Accumulated other comprehensive income (loss)	$	116	$	(211)

Schedule Of Adjustments To Reconcile Net Income To Net Cash Provided By Operating Activities

Net Cash Provided by Operating Activities
		Nine Months Ended
		September 30
(in millions)		2016		2015
Net income		$	3,424	$	2,824
Adjustments to reconcile net income to net cash provided by operating activities:
	Depreciation and amortization		1,324		1,149
	Equity in net (income) losses of investees, net		55		241
	Cash received from investees		45		43
	Net (gain) loss on investment activity and other		(72)		14
	Deferred income taxes		139		(35)
Changes in operating assets and liabilities, net of effects of acquisitions and divestitures:
	Current and noncurrent receivables, net		(338)		(346)
	Film and television costs, net		(600)		(74)
	Accounts payable and accrued expenses related to trade creditors		(114)		97
	Other operating assets and liabilities		(524)		405
Net cash provided by operating activities		$	3,339	$	4,318

Cash Payments For Interest and Income Taxes

Cash Payments for Interest and Income Taxes
	Three Months Ended				Nine Months Ended
	September 30				September 30
(in millions)		2016		2015		2016		2015
Interest	$	69	$	35	$	354	$	277
Income taxes	$	33	$	56	$	155	$	141

Financial Data by Business Segment (Tables)

9 Months Ended

Sep. 30, 2016

Financial Data by Business Segment

		Three Months Ended September 30, 2016
(in millions)			Revenue^(g)		Operating Income (Loss) Before Depreciation and Amortization^(h)		Depreciation and Amortization		Operating Income (Loss)		Capital Expenditures
Cable Communications^(a)(b)		$	12,557	$	4,986	$	1,929	$	3,057	$	2,044
NBCUniversal
	Cable Networks^(c)		2,942		893		184		709		7
	Broadcast Television^(c)		3,087		378		27		351		28
	Filmed Entertainment		1,792		353		13		340		6
	Theme Parks^(d)		1,440		706		130		576		228
	Headquarters and Other^(e)		1		(183)		91		(274)		67
	Eliminations^(f)		(84)		(1)		-		(1)		-
NBCUniversal			9,178		2,146		445		1,701		336
Corporate and Other^(b)			168		(223)		21		(244)		26
Eliminations^(d)(f)			(584)		(74)		-		(74)		-
Comcast Consolidated		$	21,319	$	6,835	$	2,395	$	4,440	$	2,406

		Three Months Ended September 30, 2015
(in millions)			Revenue^(g)		Operating Income (Loss) Before Depreciation and Amortization^(h)		Depreciation and Amortization		Operating Income (Loss)		Capital Expenditures
Cable Communications^(a)(b)		$	11,751	$	4,726	$	1,782	$	2,944	$	1,853
NBCUniversal
	Cable Networks		2,412		835		193		642		9
	Broadcast Television		1,971		150		26		124		28
	Filmed Entertainment		1,946		376		8		368		2
	Theme Parks^(d)		896		434		72		362		156
	Headquarters and Other^(e)		5		(164)		81		(245)		94
	Eliminations^(f)		(79)		2		-		2		-
NBCUniversal			7,151		1,633		380		1,253		289
Corporate and Other^(b)			167		(211)		21		(232)		23
Eliminations^(d)(f)			(400)		36		-		36		-
Comcast Consolidated		$	18,669	$	6,184	$	2,183	$	4,001	$	2,165

		Nine Months Ended September 30, 2016
(in millions)			Revenue^(g)		Operating Income (Loss) Before Depreciation and Amortization^(h)		Depreciation and Amortization		Operating Income (Loss)		Capital Expenditures
Cable Communications^(a)(b)		$	37,205	$	14,923	$	5,676	$	9,247	$	5,501
NBCUniversal
	Cable Networks^(c)		7,961		2,793		561		2,232		15
	Broadcast Television^(c)		7,299		1,056		89		967		77
	Filmed Entertainment		4,526		576		33		543		14
	Theme Parks^(d)		3,602		1,550		373		1,177		668
	Headquarters and Other^(e)		10		(518)		268		(786)		217
	Eliminations^(f)		(256)		-		-		-		-
NBCUniversal			23,142		5,457		1,324		4,133		991
Corporate and Other^(b)			547		(668)		62		(730)		70
Eliminations^(d)(f)			(1,516)		(55)		-		(55)		-
Comcast Consolidated		$	59,378	$	19,657	$	7,062	$	12,595	$	6,562

		Nine Months Ended September 30, 2015
(in millions)			Revenue^(g)		Operating Income (Loss) Before Depreciation and Amortization^(h)		Depreciation and Amortization		Operating Income (Loss)		Capital Expenditures
Cable Communications^(a)(b)		$	34,932	$	14,161	$	5,194	$	8,967	$	4,977
NBCUniversal
	Cable Networks		7,221		2,605		588		2,017		20
	Broadcast Television^(c)		6,032		563		85		478		53
	Filmed Entertainment		5,658		1,091		19		1,072		7
	Theme Parks^(d)		2,320		1,012		214		798		484
	Headquarters and Other^(e)		12		(473)		243		(716)		265
	Eliminations^(f)		(258)		2		-		2		-
NBCUniversal			20,985		4,800		1,149		3,651		829
Corporate and Other^(b)			524		(651)		67		(718)		56
Eliminations^(d)(f)			(1,176)		96		-		96		-
Comcast Consolidated		$	55,265	$	18,406	$	6,410	$	11,996	$	5,862

Cable Communications Segment Revenue Sources

		Three Months Ended				Nine Months Ended
		September 30				September 30
		2016		2015		2016		2015
Residential:
	Video	44.5	%	45.5	%	44.9	%	46.1	%
	High-speed Internet	27.1	%	26.6	%	27.0	%	26.5	%
	Voice	7.0	%	7.7	%	7.2	%	7.8	%
Business services		11.1	%	10.3	%	10.9	%	10.0	%
Advertising		5.1	%	5.0	%	4.8	%	4.8	%
Other		5.2	%	4.9	%	5.2	%	4.8	%
Total		100	%	100	%	100	%	100	%

NBCUniversal Media LLC [Member]

Financial Data by Business Segment

	Three Months Ended September 30, 2016
(in millions)		Revenue^(e)		Operating Income (Loss) Before Depreciation and Amortization^(f)		Depreciation and Amortization		Operating Income (Loss)		Capital Expenditures
Cable Networks^(a)	$	2,942	$	893	$	184	$	709	$	7
Broadcast Television^(a)		3,087		378		27		351		28
Filmed Entertainment		1,792		353		13		340		6
Theme Parks^(b)		1,440		706		130		576		228
Headquarters and Other^(c)		1		(183)		91		(274)		67
Eliminations^(b)(d)		(84)		(1)		-		(1)		-
Total	$	9,178	$	2,146	$	445	$	1,701	$	336

	Three Months Ended September 30, 2015
(in millions)		Revenue^(e)		Operating Income (Loss) Before Depreciation and Amortization^(f)		Depreciation and Amortization		Operating Income (Loss)		Capital Expenditures
Cable Networks	$	2,412	$	835	$	193	$	642	$	9
Broadcast Television		1,971		150		26		124		28
Filmed Entertainment		1,946		376		8		368		2
Theme Parks^(b)		896		434		72		362		156
Headquarters and Other^(c)		5		(164)		81		(245)		94
Eliminations^(b)(d)		(79)		(30)		-		(30)		-
Total	$	7,151	$	1,601	$	380	$	1,221	$	289

	Nine Months Ended September 30, 2016
(in millions)		Revenue^(e)		Operating Income (Loss) Before Depreciation and Amortization^(f)		Depreciation and Amortization		Operating Income (Loss)		Capital Expenditures
Cable Networks^(a)	$	7,961	$	2,793	$	561	$	2,232	$	15
Broadcast Television^(a)		7,299		1,056		89		967		77
Filmed Entertainment		4,526		576		33		543		14
Theme Parks^(b)		3,602		1,550		373		1,177		668
Headquarters and Other^(c)		10		(518)		268		(786)		217
Eliminations^(b)(d)		(256)		-		-		-		-
Total	$	23,142	$	5,457	$	1,324	$	4,133	$	991

	Nine Months Ended September 30, 2015
(in millions)		Revenue^(e)		Operating Income (Loss) Before Depreciation and Amortization^(f)		Depreciation and Amortization		Operating Income (Loss)		Capital Expenditures
Cable Networks	$	7,221	$	2,605	$	588	$	2,017	$	20
Broadcast Television^(a)		6,032		563		85		478		53
Filmed Entertainment		5,658		1,091		19		1,072		7
Theme Parks^(b)		2,320		1,012		214		798		484
Headquarters and Other^(c)		12		(473)		243		(716)		265
Eliminations^(b)(d)		(258)		9		-		9		-
Total	$	20,985	$	4,807	$	1,149	$	3,658	$	829

Condensed Consolidating Financial Information (Tables)

9 Months Ended

Sep. 30, 2016

Condensed Consolidating Financial Information [Abstract]

Condensed Consolidating Financial Statements

Condensed Consolidating Balance Sheet
September 30, 2016

(in millions)			Comcast Parent		Comcast Holdings		CCCL Parent		NBCUniversal Media Parent		Non-Guarantor Subsidiaries		Elimination and Consolidation Adjustments		Consolidated Comcast Corporation
Assets
	Cash and cash equivalents	$	-	$	-	$	-	$	576	$	2,231	$	-	$	2,807
	Receivables, net		-		-		-		-		7,533		-		7,533
	Programming rights		-		-		-		-		1,369		-		1,369
	Other current assets		70		-		-		16		3,433		-		3,519
Total current assets			70		-		-		592		14,566		-		15,228
Film and television costs			-		-		-		-		7,153		-		7,153
Investments			58		-		-		449		3,350		-		3,857
Investments in and amounts due from subsidiaries eliminated upon consolidation			96,542		119,137		125,719		47,218		119,344		(507,960)		-
Property and equipment, net			244		-		-		-		35,412		-		35,656
Franchise rights			-		-		-		-		59,364		-		59,364
Goodwill			-		-		-		-		36,652		-		36,652
Other intangible assets, net			10		-		-		-		17,346		-		17,356
Other noncurrent assets, net			1,388		147		-		89		2,328		(1,294)		2,658
Total assets		$	98,312	$	119,284	$	125,719	$	48,348	$	295,515	$	(509,254)	$	177,924

Liabilities and Equity
	Accounts payable and accrued expenses related to trade creditors	$	7	$	-	$	-	$	-	$	6,587	$	-	$	6,594
	Accrued participations and residuals		-		-		-		-		1,570		-		1,570
	Accrued expenses and other current liabilities		1,448		335		224		361		4,173		-		6,541
	Current portion of long-term debt		1,504		-		550		4		1,275		-		3,333
Total current liabilities			2,959		335		774		365		13,605		-		18,038
Long-term debt, less current portion			39,177		138		2,100		8,208		7,472		-		57,095
Deferred income taxes			-		561		-		93		35,017		(1,148)		34,523
Other noncurrent liabilities			2,695		-		-		1,160		7,410		(146)		11,119
Redeemable noncontrolling interests and redeemable subsidiary preferred stock			-		-		-		-		1,326		-		1,326
Equity:
	Common stock		28		-		-		-		-		-		28
	Other shareholders’ equity		53,453		118,250		122,845		38,522		228,343		(507,960)		53,453
Total Comcast Corporation
	shareholders’ equity		53,481		118,250		122,845		38,522		228,343		(507,960)		53,481
Noncontrolling interests			-		-		-		-		2,342		-		2,342
Total equity			53,481		118,250		122,845		38,522		230,685		(507,960)		55,823
Total liabilities and equity		$	98,312	$	119,284	$	125,719	$	48,348	$	295,515	$	(509,254)	$	177,924

Condensed Consolidating Balance Sheet
December 31, 2015

(in millions)			Comcast Parent		Comcast Holdings		CCCL Parent		NBCUniversal Media Parent		Non-Guarantor Subsidiaries		Elimination and Consolidation Adjustments		Consolidated Comcast Corporation
Assets
	Cash and cash equivalents	$	-	$	-	$	-	$	414	$	1,881	$	-	$	2,295
	Receivables, net		-		-		-		-		6,896		-		6,896
	Programming rights		-		-		-		-		1,213		-		1,213
	Other current assets		69		-		-		17		1,813		-		1,899
Total current assets			69		-		-		431		11,803		-		12,303
Film and television costs			-		-		-		-		5,855		-		5,855
Investments			33		-		-		430		2,761		-		3,224
Investments in and amounts due from subsidiaries eliminated upon consolidation			87,142		111,241		119,354		42,441		109,598		(469,776)		-
Property and equipment, net			210		-		-		-		33,455		-		33,665
Franchise rights			-		-		-		-		59,364		-		59,364
Goodwill			-		-		-		-		32,945		-		32,945
Other intangible assets, net			12		-		-		-		16,934		-		16,946
Other noncurrent assets, net			1,301		147		-		78		2,114		(1,368)		2,272
Total assets		$	88,767	$	111,388	$	119,354	$	43,380	$	274,829	$	(471,144)	$	166,574

Liabilities and Equity
	Accounts payable and accrued expenses related to trade creditors	$	16	$	-	$	-	$	-	$	6,199	$	-	$	6,215
	Accrued participations and residuals		-		-		-		-		1,572		-		1,572
	Accrued expenses and other current liabilities		1,789		335		290		389		3,961		-		6,764
	Current portion of long-term debt		1,149		-		-		1,005		1,473		-		3,627
Total current liabilities			2,954		335		290		1,394		13,205		-		18,178
Long-term debt, less current portion			31,106		130		2,650		8,211		6,897		-		48,994
Deferred income taxes			-		624		-		66		34,098		(1,222)		33,566
Other noncurrent liabilities			2,438		-		-		1,087		7,258		(146)		10,637
Redeemable noncontrolling interests and redeemable subsidiary preferred stock			-		-		-		-		1,221		-		1,221
Equity:
	Common stock		29		-		-		-		-		-		29
	Other shareholders’ equity		52,240		110,299		116,414		32,622		210,441		(469,776)		52,240
Total Comcast Corporation shareholders’ equity			52,269		110,299		116,414		32,622		210,441		(469,776)		52,269
Noncontrolling interests			-		-		-		-		1,709		-		1,709
Total equity			52,269		110,299		116,414		32,622		212,150		(469,776)		53,978
Total liabilities and equity		$	88,767	$	111,388	$	119,354	$	43,380	$	274,829	$	(471,144)	$	166,574

Condensed Consolidating Statement of Income
For the Three Months Ended September 30, 2016

(in millions)			Comcast Parent		Comcast Holdings		CCCL Parent		NBCUniversal Media Parent		Non-Guarantor Subsidiaries		Elimination and Consolidation Adjustments		Consolidated Comcast Corporation
Revenue:
	Service revenue	$	-	$	-	$	-	$	-	$	21,319	$	-	$	21,319
	Management fee revenue		268		-		263		-		-		(531)		-
			268		-		263		-		21,319		(531)		21,319
Costs and Expenses:
	Programming and production		-		-		-		-		7,003		-		7,003
	Other operating and administrative		194		-		263		222		5,846		(531)		5,994
	Advertising, marketing and promotion		-		-		-		-		1,487		-		1,487
	Depreciation		7		-		-		-		1,858		-		1,865
	Amortization		1		-		-		-		529		-		530
			202		-		263		222		16,723		(531)		16,879
Operating income (loss)			66		-		-		(222)		4,596		-		4,440
Other Income (Expense):
	Interest expense		(502)		(3)		(59)		(113)		(74)		-		(751)
	Investment income (loss), net		3		(4)		-		(12)		93		-		80
	Equity in net income
	(losses) of investees, net		2,519		2,385		2,134		1,644		1,255		(9,971)		(34)
	Other income (expense), net		-		-		-		(2)		(9)		-		(11)
			2,020		2,378		2,075		1,517		1,265		(9,971)		(716)
Income (loss) before income taxes			2,086		2,378		2,075		1,295		5,861		(9,971)		3,724
Income tax (expense) benefit			151		2		21		(6)		(1,568)		-		(1,400)
Net income (loss)			2,237		2,380		2,096		1,289		4,293		(9,971)		2,324
Net (income) loss attributable
	to noncontrolling interests and redeemable subsidiary preferred stock		-		-		-		-		(87)		-		(87)
Net income (loss) attributable
	to Comcast Corporation	$	2,237	$	2,380	$	2,096	$	1,289	$	4,206	$	(9,971)	$	2,237
Comprehensive income (loss)
	attributable to Comcast Corporation	$	2,270	$	2,388	$	2,096	$	1,310	$	4,235	$	(10,029)	$	2,270

Condensed Consolidating Statement of Income
For the Three Months Ended September 30, 2015

(in millions)			Comcast Parent		Comcast Holdings		CCCL Parent		NBCUniversal Media Parent		Non-Guarantor Subsidiaries		Elimination and Consolidation Adjustments		Consolidated Comcast Corporation
Revenue:
	Service revenue	$	-	$	-	$	-	$	-	$	18,669	$	-	$	18,669
	Management fee revenue		251		-		244		-		-		(495)		-
			251		-		244		-		18,669		(495)		18,669
Costs and Expenses:
	Programming and production		-		-		-		-		5,582		-		5,582
	Other operating and administrative		146		-		244		235		5,260		(495)		5,390
	Advertising, marketing and promotion		-		-		-		-		1,513		-		1,513
	Depreciation		8		-		-		-		1,689		-		1,697
	Amortization		1		-		-		-		485		-		486
			155		-		244		235		14,529		(495)		14,668
Operating income (loss)			96		-		-		(235)		4,140		-		4,001
Other Income (Expense):
	Interest expense		(428)		(3)		(65)		(111)		(52)		-		(659)
	Investment income (loss), net		3		(4)		-		(3)		(22)		-		(26)
	Equity in net income (losses) of
	investees, net		2,210		2,123		1,981		1,289		928		(8,530)		1
	Other income (expense), net		-		-		-		(7)		(46)		-		(53)
			1,785		2,116		1,916		1,168		808		(8,530)		(737)
Income (loss) before income taxes			1,881		2,116		1,916		933		4,948		(8,530)		3,264
Income tax (expense) benefit			115		2		23		(6)		(1,357)		-		(1,223)
Net income (loss)			1,996		2,118		1,939		927		3,591		(8,530)		2,041
Net (income) loss attributable
	to noncontrolling interests and redeemable subsidiary preferred stock		-		-		-		-		(45)		-		(45)
Net income (loss)
	attributable to Comcast Corporation	$	1,996	$	2,118	$	1,939	$	927	$	3,546	$	(8,530)	$	1,996
Comprehensive
	income (loss) attributable to Comcast Corporation	$	1,967	$	2,112	$	1,940	$	902	$	3,546	$	(8,500)	$	1,967

Condensed Consolidating Statement of Income
For the Nine Months Ended September 30, 2016

(in millions)			Comcast Parent		Comcast Holdings		CCCL Parent		NBCUniversal Media Parent		Non-Guarantor Subsidiaries		Elimination and Consolidation Adjustments		Consolidated Comcast Corporation
Revenue:
	Service revenue	$	-	$	-	$	-	$	-	$	59,378	$	-	$	59,378
	Management fee revenue		793		-		778		-		-		(1,571)		-
			793		-		778		-		59,378		(1,571)		59,378
Costs and Expenses:
	Programming and production		-		-		-		-		17,926		-		17,926
	Other operating and administrative		635		-		778		739		16,699		(1,571)		17,280
	Advertising, marketing and promotion		-		-		-		-		4,515		-		4,515
	Depreciation		21		-		-		-		5,497		-		5,518
	Amortization		4		-		-		-		1,540		-		1,544
			660		-		778		739		46,177		(1,571)		46,783
Operating income (loss)			133		-		-		(739)		13,201		-		12,595
Other Income (Expense):
	Interest expense		(1,431)		(9)		(179)		(342)		(225)		-		(2,186)
	Investment income (loss), net		6		(3)		-		(20)		185		-		168
	Equity in net income
	(losses) of investees, net		7,239		6,924		6,375		4,229		3,160		(27,991)		(64)
	Other income (expense), net		-		-		-		115		(11)		-		104
			5,814		6,912		6,196		3,982		3,109		(27,991)		(1,978)
Income (loss) before income taxes			5,947		6,912		6,196		3,243		16,310		(27,991)		10,617
Income tax (expense) benefit			452		4		63		(19)		(4,489)		-		(3,989)
Net income (loss)			6,399		6,916		6,259		3,224		11,821		(27,991)		6,628
Net (income) loss attributable
	to noncontrolling interests and redeemable subsidiary preferred stock		-		-		-		-		(229)		-		(229)
Net income (loss) attributable
	to Comcast Corporation	$	6,399	$	6,916	$	6,259	$	3,224	$	11,592	$	(27,991)	$	6,399
Comprehensive income (loss)
	attributable to Comcast Corporation	$	6,607	$	7,015	$	6,261	$	3,552	$	12,134	$	(28,962)	$	6,607

Condensed Consolidating Statement of Income
For the Nine Months Ended September 30, 2015

(in millions)			Comcast Parent		Comcast Holdings		CCCL Parent		NBCUniversal Media Parent		Non-Guarantor Subsidiaries		Elimination and Consolidation Adjustments		Consolidated Comcast Corporation
Revenue:
	Service revenue	$	-	$	-	$	-	$	-	$	55,265	$	-	$	55,265
	Management fee revenue		747		-		727		-		-		(1,474)		-
			747		-		727		-		55,265		(1,474)		55,265
Costs and Expenses:
	Programming and production		-		-		-		-		16,714		-		16,714
	Other operating and administrative		597		-		727		727		15,161		(1,474)		15,738
	Advertising, marketing and promotion		-		-		-		-		4,407		-		4,407
	Depreciation		23		-		-		-		4,982		-		5,005
	Amortization		4		-		-		-		1,401		-		1,405
			624		-		727		727		42,665		(1,474)		43,269
Operating income (loss)			123		-		-		(727)		12,600		-		11,996
Other Income (Expense):
	Interest expense		(1,310)		(9)		(211)		(347)		(151)		-		(2,028)
	Investment income (loss), net		4		(3)		-		(17)		40		-		24
	Equity in net income
	(losses) of investees, net		6,963		6,511		5,993		3,801		2,489		(25,959)		(202)
	Other income (expense), net		(3)		-		-		(2)		369		-		364
			5,654		6,499		5,782		3,435		2,747		(25,959)		(1,842)
Income (loss) before income taxes			5,777		6,499		5,782		2,708		15,347		(25,959)		10,154
Income tax (expense) benefit			415		4		74		(17)		(4,273)		-		(3,797)
Net income (loss)			6,192		6,503		5,856		2,691		11,074		(25,959)		6,357
Net (income) loss attributable
	to noncontrolling interests and redeemable subsidiary preferred stock		-		-		-		-		(165)		-		(165)
Net income (loss) attributable
	to Comcast Corporation	$	6,192	$	6,503	$	5,856	$	2,691	$	10,909	$	(25,959)	$	6,192
Comprehensive income (loss)
	attributable to Comcast Corporation	$	6,143	$	6,489	$	5,855	$	2,639	$	10,908	$	(25,891)	$	6,143

Condensed Consolidating Statement of Cash Flows
For the Nine Months Ended September 30, 2016
(in millions)			Comcast Parent		Comcast Holdings		CCCL Parent		NBCUniversal Media Parent		Non-Guarantor Subsidiaries		Elimination and Consolidation Adjustments		Consolidated Comcast Corporation
Net cash provided by (used in) operating activities		$	(1,129)	$	-	$	(179)	$	(1,068)	$	15,873	$	-	$	13,497
Investing Activities
	Net transactions with affiliates		(1,746)		-		179		2,150		(583)		-		-
	Capital expenditures		(9)		-		-		-		(6,553)		-		(6,562)
	Cash paid for intangible assets		(4)		-		-		-		(1,159)		-		(1,163)
	Acquisitions and construction of real estate properties		(2)		-		-		-		(301)		-		(303)
	Acquisitions, net of cash acquired		-		-		-		-		(3,904)		-		(3,904)
	Proceeds from sales of businesses and investments		-		-		-		104		84		-		188
	Purchases of investments		(23)		-		-		(9)		(586)		-		(618)
	Deposits		-		-		-		-		(1,761)		-		(1,761)
	Other		(108)		-		-		(35)		114		-		(29)
Net cash provided by (used in) investing activities			(1,892)		-		179		2,210		(14,649)		-		(14,152)
Financing Activities
	Proceeds from (repayments of) short-term borrowings, net		105		-		-		-		505		-		610
	Proceeds from borrowings		9,231		-		-		-		-		-		9,231
	Repurchases and repayments of debt		(750)		-		-		(1,005)		(1,239)		-		(2,994)
	Repurchases and retirements of common stock		(3,762)		-		-		-		-		-		(3,762)
	Dividends paid		(1,944)		-		-		-		-		-		(1,944)
	Issuances of common stock		23		-		-		-		-		-		23
	Distributions to noncontrolling interests and dividends for redeemable subsidiary preferred stock		-		-		-		-		(194)		-		(194)
	Other		118		-		-		25		54		-		197
Net cash provided by (used in) financing activities			3,021		-		-		(980)		(874)		-		1,167
Increase (decrease) in cash and cash equivalents			-		-		-		162		350		-		512
Cash and cash equivalents, beginning of period			-		-		-		414		1,881		-		2,295
Cash and cash equivalents, end of period		$	-	$	-	$	-	$	576	$	2,231	$	-	$	2,807

Condensed Consolidating Statement of Cash Flows
For the Nine Months Ended September 30, 2015
(in millions)			Comcast Parent		Comcast Holdings		CCCL Parent		NBCUniversal Media Parent		Non-Guarantor Subsidiaries		Elimination and Consolidation Adjustments		Consolidated Comcast Corporation
Net cash provided by (used in) operating activities		$	(725)	$	51	$	(24)	$	(1,019)	$	15,530	$	-	$	13,813
Investing Activities
	Net transactions with affiliates		6,786		(51)		697		2,249		(9,681)		-		-
	Capital expenditures		(19)		-		-		-		(5,843)		-		(5,862)
	Cash paid for intangible assets		(3)		-		-		-		(913)		-		(916)
	Acquisitions and construction of real estate properties		-		-		-		-		(116)		-		(116)
	Acquisitions, net of cash acquired		-		-		-		-		(286)		-		(286)
	Proceeds from sales of businesses and investments		-		-		-		1		419		-		420
	Purchases of investments		(3)		-		-		(400)		(309)		-		(712)
	Other		7		-		-		(5)		266		-		268
Net cash provided by (used in) investing activities			6,768		(51)		697		1,845		(16,463)		-		(7,204)
Financing Activities
	Proceeds from (repayments of) short-term borrowings, net		-		-		-		-		(220)		-		(220)
	Proceeds from borrowings		3,996		-		-		-		-		-		3,996
	Repurchases and repayments of debt		(2,650)		-		(673)		(1,002)		(28)		-		(4,353)
	Repurchases and retirements of common stock		(5,770)		-		-		-		-		-		(5,770)
	Dividends paid		(1,823)		-		-		-		-		-		(1,823)
	Issuances of common stock		35		-		-		-		-		-		35
	Distributions to noncontrolling interests and dividends for redeemable subsidiary preferred stock		-		-		-		-		(178)		-		(178)
	Other		169		-		-		-		(482)		-		(313)
Net cash provided by (used in) financing activities			(6,043)		-		(673)		(1,002)		(908)		-		(8,626)
Increase (decrease) in cash and cash equivalents			-		-		-		(176)		(1,841)		-		(2,017)
Cash and cash equivalents, beginning of period			-		-		-		385		3,525		-		3,910
Cash and cash equivalents, end of period		$	-	$	-	$	-	$	209	$	1,684	$	-	$	1,893

Recent Accounting Pronouncements (Narrative) (Details) - Share Based Compensation New Accounting Pronouncement [Member] - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2016
New Accounting Pronouncement, effect on income statement	$ 34	$ 193
New Accounting Pronouncement, effect on statement of cash flow		$ 493

Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Earnings Per Share
Net income attributable to Parent	$ 2,237	$ 1,996	$ 6,399	$ 6,192
Basic shares attributable to Comcast Corporation shareholders	2,403	2,472	2,419	2,498
Assumed exercise or issuance of shares relating to stock plans	28	30	27	32
Diluted shares attributable to Comcast Corporation shareholders	2,431	2,502	2,446	2,530
Basic earnings per common share attributable to Comcast Corporation shareholders	$ 0.93	$ 0.81	$ 2.65	$ 2.48
Diluted earnings per common share attributable to Comcast Corporation shareholders	$ 0.92	$ 0.8	$ 2.62	$ 2.45

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

+ References + Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

Significant Transactions (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions			3 Months Ended	9 Months Ended
	Aug. 22, 2016	Nov. 13, 2015	Sep. 30, 2016	Sep. 30, 2016
DreamWorks Animation [Member]
Significant Transactions [Line Items]
Cash Consideration Transferred	$ 3,800
Business Acquisition, Share Price	$ 41
Transaction-Related Costs			$ 50
Tax Receivable Agreement	$ 146
Fair Value of Assumed Debt	381
DreamWorks Animation [Member] \| NBCUniversal Media LLC [Member]
Significant Transactions [Line Items]
Cash Consideration Transferred	$ 3,800
Business Acquisition, Share Price	$ 41
Transaction-Related Costs			50
Tax Receivable Agreement	$ 146
Fair Value of Assumed Debt	$ 381
Universal Studios Japan [Member]
Significant Transactions [Line Items]
Ownership Percentage		51.00%
Cash Consideration Transferred		$ 1,500
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners		49.00%
Revenue Of Acquiree Since Acquisition Date			424	$ 1,100
Net income (loss) attributable to acquired company			48	76
Fair Value of Assumed Debt		$ 3,271
Universal Studios Japan [Member] \| NBCUniversal Media LLC [Member]
Significant Transactions [Line Items]
Ownership Percentage		51.00%
Cash Consideration Transferred		$ 1,500
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners		49.00%
Revenue Of Acquiree Since Acquisition Date			424	1,100
Net income (loss) attributable to acquired company			$ 48	$ 76
Fair Value of Assumed Debt		$ 3,271

Significant Transactions (Preliminary Allocation of Purchase Price) (Details) - USD ($) $ in Millions	Nov. 13, 2015	Sep. 30, 2016	Dec. 31, 2015
Goodwill		$ 36,652	$ 32,945
NBCUniversal Media LLC [Member]
Goodwill		$ 24,004	$ 20,364
Universal Studios Japan [Member]
Property and equipment	$ 780
Intangible assets	323
Working capital	(33)
Debt	(3,271)
Other noncurrent assets and liabilities	22
Fair value of identifiable net assets acquired	(2,179)
Fair value of noncontrolling interests associated with net assets acquired	(1,440)
Goodwill	5,118
Cash consideration transferred	1,499
Universal Studios Japan [Member] \| NBCUniversal Media LLC [Member]
Property and equipment	780
Intangible assets	323
Working capital	(33)
Debt	(3,271)
Other noncurrent assets and liabilities	22
Fair value of identifiable net assets acquired	(2,179)
Fair value of noncontrolling interests associated with net assets acquired	(1,440)
Goodwill	5,118
Cash consideration transferred	$ 1,499

Significant Transactions (Pro Forma Information) (Details) - Universal Studios Japan [Member] - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2015
Revenue [Pro Forma]	$ 19,013	$ 56,147
Net Income [Pro Forma]	2,113	6,498
Net income attributable to Comcast Corporation [Pro Forma]	$ 2,033	$ 6,263
Basic earnings per common share attributable to Comcast Corporation shareholders [Pro Forma]	$ 0.82	$ 2.51
Diluted earnings per common share attributable to Comcast Corporation shareholders [Pro Forma]	$ 0.81	$ 2.48
NBCUniversal Media LLC [Member]
Revenue [Pro Forma]	$ 7,495	$ 21,867
Net Income [Pro Forma]	1,034	2,965
Net income attributable to Comcast Corporation [Pro Forma]	$ 964	$ 2,762

Related Party Transactions (Narrative) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Other noncurrent liabilities	$ 11,119	$ 10,637
NBCUniversal Media LLC [Member]
Other noncurrent liabilities	4,186	$ 3,790
Carrying Value Of Related Party Contractual Obligation [Member] \| NBCUniversal Media LLC [Member]
Other noncurrent liabilities	383
Comcast and NBCUniversal Revolving Credit Agreements [Member] \| NBCUniversal Media LLC [Member]
Revolving Credit Agreement Capacity	$ 5,000
Debt Instrument, Maturity Date, Description	2026
Borrowing margin for LIBOR based borrowings	1.00%
Former Comcast and NBCUniversal Revolving Credit Agreements [Member] \| NBCUniversal Media LLC [Member]
Revolving Credit Agreement Capacity	$ 3,000

Related Party Transactions - Condensed Consolidated Balance Sheet (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Receivables, net	$ 7,533	$ 6,896
Accounts payable and accrued expenses related to trade creditors	6,594	6,215
Accrued expenses and other current liabilities	5,201	5,462
Other noncurrent liabilities	11,119	10,637
NBCUniversal Media LLC [Member]
Receivables, net	6,050	5,411
Accounts payable and accrued expenses related to trade creditors	1,517	1,564
Accrued expenses and other current liabilities	1,712	1,675
Note payable to Comcast	2,882	1,750
Other noncurrent liabilities	4,186	3,790
Transactions With Comcast And Consolidated Subsidiaries [Member] \| NBCUniversal Media LLC [Member]
Receivables, net	317	239
Accounts payable and accrued expenses related to trade creditors	48	68
Accrued expenses and other current liabilities	9	51
Note payable to Comcast	2,882	1,750
Other noncurrent liabilities	$ 389	$ 383

Related Party Transactions - Condensed Consolidated Statement of Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Revenue	$ 21,319	$ 18,669	$ 59,378	$ 55,265
NBCUniversal Media LLC [Member]
Revenue	9,178	7,151	23,142	20,985
Transactions With Comcast And Consolidated Subsidiaries [Member] \| NBCUniversal Media LLC [Member]
Revenue	522	334	1,335	1,006
Operating costs and expenses	(53)	(71)	(157)	(164)
Other income (expense)	$ (18)	$ (7)	$ (48)	$ (25)

Film and Television Costs (Film and Television Costs)(Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Film Costs
Released, less amortization	$ 1,586	$ 1,275
Completed, not released	222	226
In production and in development	1,402	907
Total film costs	3,210	2,408
Television Costs
Released, less amortization	1,839	1,573
In production and in development	886	737
Total television costs	2,725	2,310
Programming rights, less amortization	2,587	2,350
Total film costs, television costs and programming rights	8,522	7,068
Less: Current portion of programming rights	1,369	1,213
Film and television costs	7,153	5,855
NBCUniversal Media LLC [Member]
Film Costs
Released, less amortization	1,586	1,275
Completed, not released	222	226
In production and in development	1,402	907
Total film costs	3,210	2,408
Television Costs
Released, less amortization	1,839	1,573
In production and in development	886	737
Total television costs	2,725	2,310
Programming rights, less amortization	2,572	2,329
Total film costs, television costs and programming rights	8,507	7,047
Less: Current portion of programming rights	1,362	1,200
Film and television costs	$ 7,145	$ 5,847

Investments (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Fair value method	$ 166	$ 167
Equity method	1,212	678
Cost method	2,533	2,485
Total Investments	3,911	3,330
Less: Current investments	54	106
Noncurrent investments	3,857	3,224
NBCUniversal Media LLC [Member]
Fair value method	5	10
Equity method	653	497
Cost method	493	458
Total Investments	1,151	965
Atairos [Member]
Equity method	363	0
Hulu [Member]
Equity method	286	184
Hulu [Member] \| NBCUniversal Media LLC [Member]
Equity method	286	184
Other Investment [Member]
Equity method	563	494
Cost method	938	902
Other Investment [Member] \| NBCUniversal Media LLC [Member]
Equity method	367	313
Air Touch [Member]
Cost method	$ 1,595	$ 1,583

Investments (Investment Income (Loss), Net) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Gains on sales and exchanges of investments, net	$ 24	$ 3	$ 39	$ 7
Investment impairment losses	(7)	(15)	(28)	(46)
Unrealized gains (losses) on securities underlying prepaid forward sale agreements	0	0	0	42
Mark to market adjustments on derivative component of prepaid forward sale agreements and indexed debt instruments	(4)	(5)	(3)	(42)
Interest and dividend income	31	27	91	83
Other, net	36	(36)	69	(20)
Investment income (loss), net	$ 80	$ (26)	$ 168	$ 24

Investments (Equity Method Investments) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Equity in net income (losses) of investees, net	$ (34)	$ 1	$ (64)	$ (202)
Atairos [Member]
Percentage losses in Atairos Group	99.00%		99.00%
Percentage of residual returns in Atairos Group	86.50%		86.50%
Capital contribution			$ 399
Annual management fee			$ 40
Term			12 years
Comcast Corporation capital contribution [Member] \| Atairos [Member]
Capital contribution agreement	$ 4,000		$ 4,000
Management company investors capital contribution [Member] \| Atairos [Member]
Capital contribution agreement	100		100
Former CFO capital contribution [Member] \| Atairos [Member]
Capital contribution agreement	40		40
The Weather Channel [Member]
Goodwill Impairment Loss From Equity Method Investments				252
Gain on sale of The Weather Channel product and technology businesses			108
The Weather Channel [Member] \| NBCUniversal Media LLC [Member]
Goodwill Impairment Loss From Equity Method Investments				252
Gain on sale of The Weather Channel product and technology businesses			108
Hulu [Member]
Equity in net income (losses) of investees, net	(43)	(19)	(108)	(43)
Equity Method Investment, Deferred Gain			159
Hulu [Member] \| NBCUniversal Media LLC [Member]
Equity in net income (losses) of investees, net	$ (43)	$ (19)	(108)	$ (43)
Equity Method Investment, Deferred Gain			$ 159
Hulu Equity Interest Held By Time Warner [Member]
Equity method Investment, Ownership Percentage	10.00%		10.00%
Hulu Equity Interest Held By Time Warner [Member] \| NBCUniversal Media LLC [Member]
Equity method Investment, Ownership Percentage	10.00%		10.00%
Former Equity Interest In Hulu [Member]
Equity method Investment, Ownership Percentage	33.00%		33.00%
Former Equity Interest In Hulu [Member] \| NBCUniversal Media LLC [Member]
Equity method Investment, Ownership Percentage	33.00%		33.00%
New Equity Interest In Hulu [Member]
Equity method Investment, Ownership Percentage	30.00%		30.00%
New Equity Interest In Hulu [Member] \| NBCUniversal Media LLC [Member]
Equity method Investment, Ownership Percentage	30.00%		30.00%

Investments (Cost Method Investments) (Details) - Air Touch [Member] $ in Billions	Sep. 30, 2016 USD ($)
Fair value of AirTouch preferred stock related to redeemable preferred shares	$ 1.7
Fair value of redeemable preferred shares	$ 1.7

Goodwill Rollforward (Details) $ in Millions	9 Months Ended
Goodwill Rollforward (Details) $ in Millions	Sep. 30, 2016 USD ($)
Goodwill beginning balance	$ 32,945
Acquisitions	2,880
Adjustments	(259)
Foreign currency translation	1,086
Goodwill ending balance	36,652
NBCUniversal Media LLC [Member]
Goodwill beginning balance	20,364
Acquisitions	2,807
Adjustments	(253)
Foreign currency translation	1,086
Goodwill ending balance	24,004
Cable Communications [Member]
Goodwill beginning balance	12,389
Acquisitions	73
Adjustments	175
Foreign currency translation	0
Goodwill ending balance	12,637
Cable Networks [Member]
Goodwill beginning balance	12,947
Acquisitions	247
Adjustments	0
Foreign currency translation	5
Goodwill ending balance	13,199
Cable Networks [Member] \| NBCUniversal Media LLC [Member]
Goodwill beginning balance	12,947
Acquisitions	247
Adjustments	0
Foreign currency translation	5
Goodwill ending balance	13,199
Broadcast Television [Member]
Goodwill beginning balance	806
Acquisitions	0
Adjustments	0
Foreign currency translation	0
Goodwill ending balance	806
Broadcast Television [Member] \| NBCUniversal Media LLC [Member]
Goodwill beginning balance	806
Acquisitions	0
Adjustments	0
Foreign currency translation	0
Goodwill ending balance	806
Filmed Entertainment [Member]
Goodwill beginning balance	267
Acquisitions	2,560
Adjustments	2
Foreign currency translation	10
Goodwill ending balance	2,839
Filmed Entertainment [Member] \| NBCUniversal Media LLC [Member]
Goodwill beginning balance	267
Acquisitions	2,560
Adjustments	2
Foreign currency translation	10
Goodwill ending balance	2,839
Theme Parks [Member]
Goodwill beginning balance	6,344
Acquisitions	0
Adjustments	(255)
Foreign currency translation	1,071
Goodwill ending balance	7,160
Theme Parks [Member] \| NBCUniversal Media LLC [Member]
Goodwill beginning balance	6,344
Acquisitions	0
Adjustments	(255)
Foreign currency translation	1,071
Goodwill ending balance	7,160
Corporate and Other [Member]
Goodwill beginning balance	192
Acquisitions	0
Adjustments	(181)
Foreign currency translation	0
Goodwill ending balance	$ 11

Long-Term Debt (Debt Borrowings)(Details) $ in Millions	9 Months Ended
Long-Term Debt (Debt Borrowings)(Details) $ in Millions	Sep. 30, 2016 USD ($)
Senior 2.75% Notes Due 2023 [Member]
Principal amount	$ 1,100
Interest rate	2.75%
Maturity date	2023
Senior 3.15% Notes Due 2026 [Member]
Principal amount	$ 2,200
Interest rate	3.15%
Maturity date	2026
Senior 4.05% Notes Due 2046 [Member]
Principal amount	$ 1,430
Interest rate	4.05%
Maturity date	2046
Senior 1.625% Notes Due 2022 [Member]
Principal amount	$ 700
Interest rate	1.625%
Maturity date	2022
Senior 2.35% Notes Due 2027 [Member]
Principal amount	$ 1,400
Interest rate	2.35%
Maturity date	2027
Senior 3.20% Notes Due 2036 [Member]
Principal amount	$ 1,000
Interest rate	3.20%
Maturity date	2036
Senior 3.40% Notes Due 2046 [Member]
Principal amount	$ 1,400
Interest rate	3.40%
Maturity date	2046

Long-term Debt (Debt Repayments) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Repurchases and repayments of debt	$ 2,994	$ 4,353
NBCUniversal Media LLC [Member]
Repurchases and repayments of debt	1,515	$ 1,004
DreamWorks Animation [Member]
Repayments of DreamWorks Debt	381
NBCUniversal Media LLC DreamWorks Animation [Member]
Repayments of DreamWorks Debt	381
Senior 2.875% Notes Due 2016 [Member]
Repurchases and repayments of debt	$ 1,000
Interest rate	2.875%
Maturity date	2016
Senior 2.875% Notes Due 2016 [Member] \| NBCUniversal Media LLC [Member]
Repurchases and repayments of debt	$ 1,000
Interest rate	2.875%
Maturity date	2016
Senior 4.95% Notes Due 2016 [Member]
Repurchases and repayments of debt	$ 750
Interest rate	4.95%
Maturity date	2016
NBCUniversal Enterprise Senior Notes Due 2016 [Member]
Repurchases and repayments of debt	$ 700
Maturity date	2016

Long-Term Debt (Narrative) (Details) $ in Millions	9 Months Ended
Long-Term Debt (Narrative) (Details) $ in Millions	Sep. 30, 2016 USD ($)
Total debt	$ 60,400
Long-term Debt, Fair Value	69,400
Amounts available under revolving credit facilities	6,600
Commercial paper	505
NBCUniversal Media LLC [Member]
Total debt	12,100
Long-term Debt, Fair Value	$ 13,600
Comcast ownership in cable holding company subsidiaries	100.00%
NBCUniversal Enterprise [Member]
Commercial paper	$ 1,100
NBCUniversal Enterprise [Member] \| NBCUniversal Media LLC [Member]
Related Party Aggregate Principal Amount Senior Notes Not Subject To Guarantee	3,300
Related Party Credit Facility Not Subject To Guarantee	1,500
Related Party Liquidation Preference Preferred Stock Not Subject To Guarantee	725
Comcast Revolving Credit Facility [Member]
Credit facility borrowing capacity	$ 7,000
Maturity date	2021
Potential Increased Credit Facility Borrowing Capacity	$ 10,000
Potential Extended Credit Facility Maturity Date	2023
Borrowing margin for LIBOR based borrowings	1.00%
Comcast Revolving Credit Facility [Member] \| NBCUniversal Media LLC [Member]
Maturity date	2021
Guarantee Obligations Current Principal Balance	$ 7,000
NBCUniversal Enterprise Credit Facility [Member]
Credit facility borrowing capacity	$ 1,500
Maturity date	2021
Potential Increased Credit Facility Borrowing Capacity	$ 2,000
Potential Extended Credit Facility Maturity Date	2023
Borrowing margin for LIBOR based borrowings	1.00%
Amounts available under revolving credit facilities	$ 408
Former Comcast and Comcast Cable Communications, LLC Revolving Credit Facility Member [Member]
Credit facility borrowing capacity	6,250
Former NBCUniversal Enterprise Credit Facility [Member]
Credit facility borrowing capacity	1,350
Comcast And Comcast Cable Debt Securities [Member] \| NBCUniversal Media LLC [Member]
Guarantee Obligations Current Principal Balance	$ 43,500

Fair Value Measurements (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Trading securities	$ 5	$ 22
Available-for-sale securities	137	133
Interest rate swap agreements	43	53
Other [assets]	30	17
Fair Value, Assets Measured on Recurring Basis, Total	215	225
Other [liabilities]	212	91
Fair Value Liabilities Measured On Recurring Basis, Total	212	$ 91
Fair Value, Inputs, Level 1 [Member]
Trading securities	5
Available-for-sale securities	0
Interest rate swap agreements	0
Other [assets]	0
Fair Value, Assets Measured on Recurring Basis, Total	5
Other [liabilities]	0
Fair Value Liabilities Measured On Recurring Basis, Total	0
Fair Value, Inputs, Level 2 [Member]
Trading securities	0
Available-for-sale securities	126
Interest rate swap agreements	43
Other [assets]	6
Fair Value, Assets Measured on Recurring Basis, Total	175
Other [liabilities]	212
Fair Value Liabilities Measured On Recurring Basis, Total	212
Fair Value, Inputs, Level 3 [Member]
Trading securities	0
Available-for-sale securities	11
Interest rate swap agreements	0
Other [assets]	24
Fair Value, Assets Measured on Recurring Basis, Total	35
Other [liabilities]	0
Fair Value Liabilities Measured On Recurring Basis, Total	$ 0

Fair Value Disclosure (Narrative) (Details) $ in Millions	Sep. 30, 2016 USD ($)
NBCUniversal Enterprise [Member]
Fair value of redeemable preferred stock	$ 757

Share-Based Compensation (Narrative) (Details) $ / shares in Units, shares in Millions, $ in Millions	9 Months Ended
	Sep. 30, 2016 USD ($) $ / shares shares
Number of stock options granted \| shares	20.7
Number of restricted share units granted \| shares	5.9
Weighted average fair value of stock options granted \| $ / shares	$ 11.45
Weighted average fair value of restricted share units granted \| $ / shares	$ 59.5
Restricted Share Units [Member]
Unrecognized pretax compensation expense on nonvested awards \| $	$ 771
Stock Options [Member]
Unrecognized pretax compensation expense on nonvested awards \| $	$ 425

Share-Based Compensation (Recognized Share-Based Compensation Expense) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Recognized share-based compensation expense	$ 131	$ 113	$ 391	$ 343
NBCUniversal Media LLC [Member]
Recognized share-based compensation expense	23	24	77	74
Restricted Share Units [Member]
Recognized share-based compensation expense	77	67	236	205
Restricted Share Units [Member] \| NBCUniversal Media LLC [Member]
Recognized share-based compensation expense	19	20	64	61
Stock Options [Member]
Recognized share-based compensation expense	48	40	133	118
Stock Options [Member] \| NBCUniversal Media LLC [Member]
Recognized share-based compensation expense	3	3	7	8
Employee Stock Purchase Plan [Member]
Recognized share-based compensation expense	6	6	22	20
Employee Stock Purchase Plan [Member] \| NBCUniversal Media LLC [Member]
Recognized share-based compensation expense	$ 1	$ 1	$ 6	$ 5

Supplemental Financial Information (Receivables)(Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Receivables, gross	$ 8,090	$ 7,595
Less: Allowance for returns and customer incentives	289	473
Less: Allowance for doubtful accounts	268	226
Receivables, net	7,533	6,896
NBCUniversal Media LLC [Member]
Receivables, gross	6,425	5,949
Less: Allowance for returns and customer incentives	286	469
Less: Allowance for doubtful accounts	89	69
Receivables, net	$ 6,050	$ 5,411

Supplemental Financial Information (Components of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2015
Unrealized gains (losses) on marketable securities	$ 2		$ 1
Deferred gains (losses) on cash flow hedges	(52)		(29)
Unrecognized gains (losses) on employee benefit obligations	8		(54)
Cumulative translation adjustments	76		(113)
Accumulated other comprehensive income (loss), net of deferred taxes	34	$ (174)	(195)
NBCUniversal Media LLC [Member]
Deferred gains (losses) on cash flow hedges	(8)		8
Unrecognized gains (losses) on employee benefit obligations	3		(39)
Cumulative translation adjustments	121		(180)
Accumulated other comprehensive income (loss), net of deferred taxes	$ 116	$ (212)	$ (211)

- Definition

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

+ References + Details

Supplemental Financial Information (Net Cash Provided by Operating Activities)(Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Net income	$ 2,324	$ 2,041	$ 6,628	$ 6,357
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	2,395	2,183	7,062	6,410
Share-based compensation			495	430
Noncash interest expense (income), net			172	147
Equity in net (income) losses of investees, net	34	(1)	64	202
Cash received from investees			58	139
Net (gain) loss on investment activity and other			(159)	(344)
Deferred income taxes			985	67
Changes in operating assets and liabilities, net of effects of acquisitions and divestitures:
Current and noncurrent receivables, net			(315)	(322)
Film and television costs, net			(593)	(65)
Accounts payable and accrued expenses related to trade creditors (cash flow)			46	169
Other operating assets and liabilities			(946)	623
Net cash provided by operating activities			13,497	13,813
NBCUniversal Media LLC [Member]
Net income	1,367	962	3,424	2,824
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	445	380	1,324	1,149
Equity in net (income) losses of investees, net	$ 34	$ 14	55	241
Cash received from investees			45	43
Net (gain) loss on investment activity and other			(72)	14
Deferred income taxes			139	(35)
Changes in operating assets and liabilities, net of effects of acquisitions and divestitures:
Current and noncurrent receivables, net			(338)	(346)
Film and television costs, net			(600)	(74)
Accounts payable and accrued expenses related to trade creditors (cash flow)			(114)	97
Other operating assets and liabilities			(524)	405
Net cash provided by operating activities			$ 3,339	$ 4,318

Supplemental Financial Information (Cash Payments for Interest and Income Taxes)(Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Interest	$ 808	$ 673	$ 2,043	$ 1,914
Income taxes	1,031	1,146	2,716	3,145
NBCUniversal Media LLC [Member]
Interest	69	35	354	277
Income taxes	$ 33	$ 56	$ 155	$ 141

Supplemental Financial Information (Noncash Investing and Financing Activities)(Details) $ / shares in Units, $ in Millions	9 Months Ended
	Sep. 30, 2016 USD ($) $ / shares
Dividends payable, amount	$ 658
Dividends payable, amount per share \| $ / shares	$ 0.275
Capital expenditures incurred but not yet paid	$ 1,300
NBCUniversal Media LLC [Member]
Capital expenditures incurred but not yet paid	$ 211

Financial Data by Business Segment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Revenue	$ 21,319	$ 18,669	$ 59,378	$ 55,265
Operating income (loss) before depreciation and amortization	6,835	6,184	19,657	18,406
Depreciation and amortization	2,395	2,183	7,062	6,410
Operating income (loss)	4,440	4,001	12,595	11,996
Capital expenditures	2,406	2,165	6,562	5,862
NBCUniversal Media LLC [Member]
Revenue	9,178	7,151	23,142	20,985
Operating income (loss) before depreciation and amortization	2,146	1,601	5,457	4,807
Depreciation and amortization	445	380	1,324	1,149
Operating income (loss)	1,701	1,221	4,133	3,658
Capital expenditures	336	289	991	829
Cable Communications [Member]
Revenue	12,557	11,751	37,205	34,932
Operating income (loss) before depreciation and amortization	4,986	4,726	14,923	14,161
Depreciation and amortization	1,929	1,782	5,676	5,194
Operating income (loss)	3,057	2,944	9,247	8,967
Capital expenditures	$ 2,044	$ 1,853	$ 5,501	$ 4,977
Cable segment revenue types as percentage of total cable revenue	100.00%	100.00%	100.00%	100.00%
Cable Networks [Member]
Revenue	$ 2,942	$ 2,412	$ 7,961	$ 7,221
Operating income (loss) before depreciation and amortization	893	835	2,793	2,605
Depreciation and amortization	184	193	561	588
Operating income (loss)	709	642	2,232	2,017
Capital expenditures	7	9	15	20
Cable Networks [Member] \| NBCUniversal Media LLC [Member]
Revenue	2,942	2,412	7,961	7,221
Operating income (loss) before depreciation and amortization	893	835	2,793	2,605
Depreciation and amortization	184	193	561	588
Operating income (loss)	709	642	2,232	2,017
Capital expenditures	7	9	15	20
Broadcast Television [Member]
Revenue	3,087	1,971	7,299	6,032
Operating income (loss) before depreciation and amortization	378	150	1,056	563
Depreciation and amortization	27	26	89	85
Operating income (loss)	351	124	967	478
Capital expenditures	28	28	77	53
Broadcast Television [Member] \| NBCUniversal Media LLC [Member]
Revenue	3,087	1,971	7,299	6,032
Operating income (loss) before depreciation and amortization	378	150	1,056	563
Depreciation and amortization	27	26	89	85
Operating income (loss)	351	124	967	478
Capital expenditures	28	28	77	53
Filmed Entertainment [Member]
Revenue	1,792	1,946	4,526	5,658
Operating income (loss) before depreciation and amortization	353	376	576	1,091
Depreciation and amortization	13	8	33	19
Operating income (loss)	340	368	543	1,072
Capital expenditures	6	2	14	7
Filmed Entertainment [Member] \| NBCUniversal Media LLC [Member]
Revenue	1,792	1,946	4,526	5,658
Operating income (loss) before depreciation and amortization	353	376	576	1,091
Depreciation and amortization	13	8	33	19
Operating income (loss)	340	368	543	1,072
Capital expenditures	6	2	14	7
Theme Parks [Member]
Revenue	1,440	896	3,602	2,320
Operating income (loss) before depreciation and amortization	706	434	1,550	1,012
Depreciation and amortization	130	72	373	214
Operating income (loss)	576	362	1,177	798
Capital expenditures	228	156	668	484
Theme Parks [Member] \| NBCUniversal Media LLC [Member]
Revenue	1,440	896	3,602	2,320
Operating income (loss) before depreciation and amortization	706	434	1,550	1,012
Depreciation and amortization	130	72	373	214
Operating income (loss)	576	362	1,177	798
Capital expenditures	228	156	668	484
Headquarters And Other [Member]
Revenue	1	5	10	12
Operating income (loss) before depreciation and amortization	(183)	(164)	(518)	(473)
Depreciation and amortization	91	81	268	243
Operating income (loss)	(274)	(245)	(786)	(716)
Capital expenditures	67	94	217	265
Headquarters And Other [Member] \| NBCUniversal Media LLC [Member]
Revenue	1	5	10	12
Operating income (loss) before depreciation and amortization	(183)	(164)	(518)	(473)
Depreciation and amortization	91	81	268	243
Operating income (loss)	(274)	(245)	(786)	(716)
Capital expenditures	67	94	217	265
NBCUniversal Eliminations [Member]
Revenue	(84)	(79)	(256)	(258)
Operating income (loss) before depreciation and amortization	(1)	2	0	2
Depreciation and amortization	0	0	0	0
Operating income (loss)	(1)	2	0	2
Capital expenditures	0	0	0	0
NBCUniversal Eliminations [Member] \| NBCUniversal Media LLC [Member]
Revenue	(84)	(79)	(256)	(258)
Operating income (loss) before depreciation and amortization	(1)	(30)	0	9
Depreciation and amortization	0	0	0	0
Operating income (loss)	(1)	(30)	0	9
Capital expenditures	0	0	0	0
NBCUniversal [Member]
Revenue	9,178	7,151	23,142	20,985
Operating income (loss) before depreciation and amortization	2,146	1,633	5,457	4,800
Depreciation and amortization	445	380	1,324	1,149
Operating income (loss)	1,701	1,253	4,133	3,651
Capital expenditures	336	289	991	829
Corporate and Other [Member]
Revenue	168	167	547	524
Operating income (loss) before depreciation and amortization	(223)	(211)	(668)	(651)
Depreciation and amortization	21	21	62	67
Operating income (loss)	(244)	(232)	(730)	(718)
Capital expenditures	26	23	70	56
Eliminations [Member]
Revenue	(584)	(400)	(1,516)	(1,176)
Operating income (loss) before depreciation and amortization	(74)	36	(55)	96
Depreciation and amortization	0	0	0	0
Operating income (loss)	(74)	36	(55)	96
Capital expenditures	$ 0	$ 0	$ 0	$ 0
Cable Communications Segment Revenue Percentage-Video [Member]
Cable segment revenue types as percentage of total cable revenue	44.50%	45.50%	44.90%	46.10%
Cable Communications Segment Revenue Percentage - High-speed Internet [Member]
Cable segment revenue types as percentage of total cable revenue	27.10%	26.60%	27.00%	26.50%
Cable Communications Segment Revenue Percentage- Voice [Member]
Cable segment revenue types as percentage of total cable revenue	7.00%	7.70%	7.20%	7.80%
Cable Communications Segment Revenue Percentage- Business Services [Member]
Cable segment revenue types as percentage of total cable revenue	11.10%	10.30%	10.90%	10.00%
Cable Communications Segment Revenue Percentage- Advertising [Member]
Cable segment revenue types as percentage of total cable revenue	5.10%	5.00%	4.80%	4.80%
Cable Communications Segment Revenue Percentage- Other [Member]
Cable segment revenue types as percentage of total cable revenue	5.20%	4.90%	5.20%	4.80%
Cable Communications Segment Revenue Percentage- Franchise and other regulatory fees [Member]
Cable segment revenue types as percentage of total cable revenue	2.80%	2.80%	2.80%	2.80%

Condensed Consolidating Financial Information (Narrative) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2016 USD ($)
Comcast Holdings' ZONES due October 2029 [Member]
Debt Instrument, Maturity Date, Description	October 2029
Principal amount of debt securities subject to guarantee	$ 185
Comcast Holdings' ZONES due November 2029 [Member]
Debt Instrument, Maturity Date, Description	November 2029
Principal amount of debt securities not subject to guarantee	$ 62
NBCUniversal Enterprise Senior Debt Securities [Member]
Principal amount of debt securities subject to guarantee	3,300
Universal Studios Japan Term Loans [Member]
Principal amount of debt securities not subject to guarantee	$ 3,800

Condensed Consolidating Financial Information (Condensed Consolidating Balance Sheet) (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2015	Dec. 31, 2014
Assets
Cash and cash equivalents	$ 2,807	$ 2,295	$ 1,893	$ 3,910
Receivables, net	7,533	6,896
Programming rights	1,369	1,213
Other current assets	3,519	1,899
Total current assets	15,228	12,303
Film and television costs	7,153	5,855
Investments	3,857	3,224
Investments in and amounts due from subsidiaries eliminated upon consolidation	0	0
Property and equipment, net	35,656	33,665
Franchise rights	59,364	59,364
Goodwill	36,652	32,945
Other intangible assets, net	17,356	16,946
Other noncurrent assets, net	2,658	2,272
Total assets	177,924	166,574
Liabilities and Equity
Accounts payable and accrued expenses related to trade creditors	6,594	6,215
Accrued participations and residuals	1,570	1,572
Accrued expenses and other current liabilities [condensed]	6,541	6,764
Current portion of long-term debt	3,333	3,627
Total current liabilities	18,038	18,178
Long-term debt, less current portion	57,095	48,994
Deferred income taxes	34,523	33,566
Other noncurrent liabilities	11,119	10,637
Redeemable noncontrolling interests and redeemable subsidiary preferred stock	1,326	1,221
Equity:
Common stock	28	29
Other shareholders' equity	53,453	52,240
Total Comcast Corporation shareholders' equity	53,481	52,269
Noncontrolling interests	2,342	1,709
Total equity	55,823	53,978	51,965	53,068
Total liabilities and equity	177,924	166,574
Comcast Parent [Member]
Assets
Cash and cash equivalents	0	0	0	0
Receivables, net	0	0
Programming rights	0	0
Other current assets	70	69
Total current assets	70	69
Film and television costs	0	0
Investments	58	33
Investments in and amounts due from subsidiaries eliminated upon consolidation	96,542	87,142
Property and equipment, net	244	210
Franchise rights	0	0
Goodwill	0	0
Other intangible assets, net	10	12
Other noncurrent assets, net	1,388	1,301
Total assets	98,312	88,767
Liabilities and Equity
Accounts payable and accrued expenses related to trade creditors	7	16
Accrued participations and residuals	0	0
Accrued expenses and other current liabilities [condensed]	1,448	1,789
Current portion of long-term debt	1,504	1,149
Total current liabilities	2,959	2,954
Long-term debt, less current portion	39,177	31,106
Deferred income taxes	0	0
Other noncurrent liabilities	2,695	2,438
Redeemable noncontrolling interests and redeemable subsidiary preferred stock	0	0
Equity:
Common stock	28	29
Other shareholders' equity	53,453	52,240
Total Comcast Corporation shareholders' equity	53,481	52,269
Noncontrolling interests	0	0
Total equity	53,481	52,269
Total liabilities and equity	98,312	88,767
Comcast Holdings [Member]
Assets
Cash and cash equivalents	0	0	0	0
Receivables, net	0	0
Programming rights	0	0
Other current assets	0	0
Total current assets	0	0
Film and television costs	0	0
Investments	0	0
Investments in and amounts due from subsidiaries eliminated upon consolidation	119,137	111,241
Property and equipment, net	0	0
Franchise rights	0	0
Goodwill	0	0
Other intangible assets, net	0	0
Other noncurrent assets, net	147	147
Total assets	119,284	111,388
Liabilities and Equity
Accounts payable and accrued expenses related to trade creditors	0	0
Accrued participations and residuals	0	0
Accrued expenses and other current liabilities [condensed]	335	335
Current portion of long-term debt	0	0
Total current liabilities	335	335
Long-term debt, less current portion	138	130
Deferred income taxes	561	624
Other noncurrent liabilities	0	0
Redeemable noncontrolling interests and redeemable subsidiary preferred stock	0	0
Equity:
Common stock	0	0
Other shareholders' equity	118,250	110,299
Total Comcast Corporation shareholders' equity	118,250	110,299
Noncontrolling interests	0	0
Total equity	118,250	110,299
Total liabilities and equity	119,284	111,388
CCCL Parent [Member]
Assets
Cash and cash equivalents	0	0	0	0
Receivables, net	0	0
Programming rights	0	0
Other current assets	0	0
Total current assets	0	0
Film and television costs	0	0
Investments	0	0
Investments in and amounts due from subsidiaries eliminated upon consolidation	125,719	119,354
Property and equipment, net	0	0
Franchise rights	0	0
Goodwill	0	0
Other intangible assets, net	0	0
Other noncurrent assets, net	0	0
Total assets	125,719	119,354
Liabilities and Equity
Accounts payable and accrued expenses related to trade creditors	0	0
Accrued participations and residuals	0	0
Accrued expenses and other current liabilities [condensed]	224	290
Current portion of long-term debt	550	0
Total current liabilities	774	290
Long-term debt, less current portion	2,100	2,650
Deferred income taxes	0	0
Other noncurrent liabilities	0	0
Redeemable noncontrolling interests and redeemable subsidiary preferred stock	0	0
Equity:
Common stock	0	0
Other shareholders' equity	122,845	116,414
Total Comcast Corporation shareholders' equity	122,845	116,414
Noncontrolling interests	0	0
Total equity	122,845	116,414
Total liabilities and equity	125,719	119,354
NBCUniversal Media Parent [Member]
Assets
Cash and cash equivalents	576	414	209	385
Receivables, net	0	0
Programming rights	0	0
Other current assets	16	17
Total current assets	592	431
Film and television costs	0	0
Investments	449	430
Investments in and amounts due from subsidiaries eliminated upon consolidation	47,218	42,441
Property and equipment, net	0	0
Franchise rights	0	0
Goodwill	0	0
Other intangible assets, net	0	0
Other noncurrent assets, net	89	78
Total assets	48,348	43,380
Liabilities and Equity
Accounts payable and accrued expenses related to trade creditors	0	0
Accrued participations and residuals	0	0
Accrued expenses and other current liabilities [condensed]	361	389
Current portion of long-term debt	4	1,005
Total current liabilities	365	1,394
Long-term debt, less current portion	8,208	8,211
Deferred income taxes	93	66
Other noncurrent liabilities	1,160	1,087
Redeemable noncontrolling interests and redeemable subsidiary preferred stock	0	0
Equity:
Common stock	0	0
Other shareholders' equity	38,522	32,622
Total Comcast Corporation shareholders' equity	38,522	32,622
Noncontrolling interests	0	0
Total equity	38,522	32,622
Total liabilities and equity	48,348	43,380
Comcast Non-Guarantor Subsidiaries [Member]
Assets
Cash and cash equivalents	2,231	1,881	1,684	3,525
Receivables, net	7,533	6,896
Programming rights	1,369	1,213
Other current assets	3,433	1,813
Total current assets	14,566	11,803
Film and television costs	7,153	5,855
Investments	3,350	2,761
Investments in and amounts due from subsidiaries eliminated upon consolidation	119,344	109,598
Property and equipment, net	35,412	33,455
Franchise rights	59,364	59,364
Goodwill	36,652	32,945
Other intangible assets, net	17,346	16,934
Other noncurrent assets, net	2,328	2,114
Total assets	295,515	274,829
Liabilities and Equity
Accounts payable and accrued expenses related to trade creditors	6,587	6,199
Accrued participations and residuals	1,570	1,572
Accrued expenses and other current liabilities [condensed]	4,173	3,961
Current portion of long-term debt	1,275	1,473
Total current liabilities	13,605	13,205
Long-term debt, less current portion	7,472	6,897
Deferred income taxes	35,017	34,098
Other noncurrent liabilities	7,410	7,258
Redeemable noncontrolling interests and redeemable subsidiary preferred stock	1,326	1,221
Equity:
Common stock	0	0
Other shareholders' equity	228,343	210,441
Total Comcast Corporation shareholders' equity	228,343	210,441
Noncontrolling interests	2,342	1,709
Total equity	230,685	212,150
Total liabilities and equity	295,515	274,829
Elimination and Consolidation Adjustments [Member]
Assets
Cash and cash equivalents	0	0	$ 0	$ 0
Receivables, net	0	0
Programming rights	0	0
Other current assets	0	0
Total current assets	0	0
Film and television costs	0	0
Investments	0	0
Investments in and amounts due from subsidiaries eliminated upon consolidation	(507,960)	(469,776)
Property and equipment, net	0	0
Franchise rights	0	0
Goodwill	0	0
Other intangible assets, net	0	0
Other noncurrent assets, net	(1,294)	(1,368)
Total assets	(509,254)	(471,144)
Liabilities and Equity
Accounts payable and accrued expenses related to trade creditors	0	0
Accrued participations and residuals	0	0
Accrued expenses and other current liabilities [condensed]	0	0
Current portion of long-term debt	0	0
Total current liabilities	0	0
Long-term debt, less current portion	0	0
Deferred income taxes	(1,148)	(1,222)
Other noncurrent liabilities	(146)	(146)
Redeemable noncontrolling interests and redeemable subsidiary preferred stock	0	0
Equity:
Common stock	0	0
Other shareholders' equity	(507,960)	(469,776)
Total Comcast Corporation shareholders' equity	(507,960)	(469,776)
Noncontrolling interests	0	0
Total equity	(507,960)	(469,776)
Total liabilities and equity	$ (509,254)	$ (471,144)

Condensed Consolidating Financial Information (Condensed Consolidating Statement of Income) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Service revenue	$ 21,319	$ 18,669	$ 59,378	$ 55,265
Management fee revenue	0	0	0	0
Revenue	21,319	18,669	59,378	55,265
Costs and Expenses:
Programming and production	7,003	5,582	17,926	16,714
Other operating and administrative	5,994	5,390	17,280	15,738
Advertising, marketing and promotion	1,487	1,513	4,515	4,407
Depreciation	1,865	1,697	5,518	5,005
Amortization	530	486	1,544	1,405
Costs and expenses, total	16,879	14,668	46,783	43,269
Operating income (loss)	4,440	4,001	12,595	11,996
Other Income (Expense):
Interest expense	(751)	(659)	(2,186)	(2,028)
Investment income (loss), net	80	(26)	168	24
Equity in net income (losses) of investees, net	(34)	1	(64)	(202)
Other income (expense), net	(11)	(53)	104	364
Nonoperating income (Expense), Total	(716)	(737)	(1,978)	(1,842)
Income (loss) before income taxes	3,724	3,264	10,617	10,154
Income tax (expense) benefit	(1,400)	(1,223)	(3,989)	(3,797)
Net income (loss)	2,324	2,041	6,628	6,357
Net (income) loss attributable to noncontrolling interests and redeemable subsidiary preferred stock	(87)	(45)	(229)	(165)
Net income (loss) attributable to Parent	2,237	1,996	6,399	6,192
Comprehensive income attributable to Parent	2,270	1,967	6,607	6,143
Elimination and Consolidation Adjustments [Member]
Service revenue	0	0	0	0
Management fee revenue	(531)	(495)	(1,571)	(1,474)
Revenue	(531)	(495)	(1,571)	(1,474)
Costs and Expenses:
Programming and production	0	0	0	0
Other operating and administrative	(531)	(495)	(1,571)	(1,474)
Advertising, marketing and promotion	0	0	0	0
Depreciation	0	0	0	0
Amortization	0	0	0	0
Costs and expenses, total	(531)	(495)	(1,571)	(1,474)
Operating income (loss)	0	0	0	0
Other Income (Expense):
Interest expense	0	0	0	0
Investment income (loss), net	0	0	0	0
Equity in net income (losses) of investees, net	(9,971)	(8,530)	(27,991)	(25,959)
Other income (expense), net	0	0	0	0
Nonoperating income (Expense), Total	(9,971)	(8,530)	(27,991)	(25,959)
Income (loss) before income taxes	(9,971)	(8,530)	(27,991)	(25,959)
Income tax (expense) benefit	0	0	0	0
Net income (loss)	(9,971)	(8,530)	(27,991)	(25,959)
Net (income) loss attributable to noncontrolling interests and redeemable subsidiary preferred stock	0	0	0	0
Net income (loss) attributable to Parent	(9,971)	(8,530)	(27,991)	(25,959)
Comprehensive income attributable to Parent	(10,029)	(8,500)	(28,962)	(25,891)
Comcast Parent [Member]
Service revenue	0	0	0	0
Management fee revenue	268	251	793	747
Revenue	268	251	793	747
Costs and Expenses:
Programming and production	0	0	0	0
Other operating and administrative	194	146	635	597
Advertising, marketing and promotion	0	0	0	0
Depreciation	7	8	21	23
Amortization	1	1	4	4
Costs and expenses, total	202	155	660	624
Operating income (loss)	66	96	133	123
Other Income (Expense):
Interest expense	(502)	(428)	(1,431)	(1,310)
Investment income (loss), net	3	3	6	4
Equity in net income (losses) of investees, net	2,519	2,210	7,239	6,963
Other income (expense), net	0	0	0	(3)
Nonoperating income (Expense), Total	2,020	1,785	5,814	5,654
Income (loss) before income taxes	2,086	1,881	5,947	5,777
Income tax (expense) benefit	151	115	452	415
Net income (loss)	2,237	1,996	6,399	6,192
Net (income) loss attributable to noncontrolling interests and redeemable subsidiary preferred stock	0	0	0	0
Net income (loss) attributable to Parent	2,237	1,996	6,399	6,192
Comprehensive income attributable to Parent	2,270	1,967	6,607	6,143
Comcast Holdings [Member]
Service revenue	0	0	0	0
Management fee revenue	0	0	0	0
Revenue	0	0	0	0
Costs and Expenses:
Programming and production	0	0	0	0
Other operating and administrative	0	0	0	0
Advertising, marketing and promotion	0	0	0	0
Depreciation	0	0	0	0
Amortization	0	0	0	0
Costs and expenses, total	0	0	0	0
Operating income (loss)	0	0	0	0
Other Income (Expense):
Interest expense	(3)	(3)	(9)	(9)
Investment income (loss), net	(4)	(4)	(3)	(3)
Equity in net income (losses) of investees, net	2,385	2,123	6,924	6,511
Other income (expense), net	0	0	0	0
Nonoperating income (Expense), Total	2,378	2,116	6,912	6,499
Income (loss) before income taxes	2,378	2,116	6,912	6,499
Income tax (expense) benefit	2	2	4	4
Net income (loss)	2,380	2,118	6,916	6,503
Net (income) loss attributable to noncontrolling interests and redeemable subsidiary preferred stock	0	0	0	0
Net income (loss) attributable to Parent	2,380	2,118	6,916	6,503
Comprehensive income attributable to Parent	2,388	2,112	7,015	6,489
CCCL Parent [Member]
Service revenue	0	0	0	0
Management fee revenue	263	244	778	727
Revenue	263	244	778	727
Costs and Expenses:
Programming and production	0	0	0	0
Other operating and administrative	263	244	778	727
Advertising, marketing and promotion	0	0	0	0
Depreciation	0	0	0	0
Amortization	0	0	0	0
Costs and expenses, total	263	244	778	727
Operating income (loss)	0	0	0	0
Other Income (Expense):
Interest expense	(59)	(65)	(179)	(211)
Investment income (loss), net	0	0	0	0
Equity in net income (losses) of investees, net	2,134	1,981	6,375	5,993
Other income (expense), net	0	0	0	0
Nonoperating income (Expense), Total	2,075	1,916	6,196	5,782
Income (loss) before income taxes	2,075	1,916	6,196	5,782
Income tax (expense) benefit	21	23	63	74
Net income (loss)	2,096	1,939	6,259	5,856
Net (income) loss attributable to noncontrolling interests and redeemable subsidiary preferred stock	0	0	0	0
Net income (loss) attributable to Parent	2,096	1,939	6,259	5,856
Comprehensive income attributable to Parent	2,096	1,940	6,261	5,855
NBCUniversal Media Parent [Member]
Service revenue	0	0	0	0
Management fee revenue	0	0	0	0
Revenue	0	0	0	0
Costs and Expenses:
Programming and production	0	0	0	0
Other operating and administrative	222	235	739	727
Advertising, marketing and promotion	0	0	0	0
Depreciation	0	0	0	0
Amortization	0	0	0	0
Costs and expenses, total	222	235	739	727
Operating income (loss)	(222)	(235)	(739)	(727)
Other Income (Expense):
Interest expense	(113)	(111)	(342)	(347)
Investment income (loss), net	(12)	(3)	(20)	(17)
Equity in net income (losses) of investees, net	1,644	1,289	4,229	3,801
Other income (expense), net	(2)	(7)	115	(2)
Nonoperating income (Expense), Total	1,517	1,168	3,982	3,435
Income (loss) before income taxes	1,295	933	3,243	2,708
Income tax (expense) benefit	(6)	(6)	(19)	(17)
Net income (loss)	1,289	927	3,224	2,691
Net (income) loss attributable to noncontrolling interests and redeemable subsidiary preferred stock	0	0	0	0
Net income (loss) attributable to Parent	1,289	927	3,224	2,691
Comprehensive income attributable to Parent	1,310	902	3,552	2,639
Comcast Non-Guarantor Subsidiaries [Member]
Service revenue	21,319	18,669	59,378	55,265
Management fee revenue	0	0	0	0
Revenue	21,319	18,669	59,378	55,265
Costs and Expenses:
Programming and production	7,003	5,582	17,926	16,714
Other operating and administrative	5,846	5,260	16,699	15,161
Advertising, marketing and promotion	1,487	1,513	4,515	4,407
Depreciation	1,858	1,689	5,497	4,982
Amortization	529	485	1,540	1,401
Costs and expenses, total	16,723	14,529	46,177	42,665
Operating income (loss)	4,596	4,140	13,201	12,600
Other Income (Expense):
Interest expense	(74)	(52)	(225)	(151)
Investment income (loss), net	93	(22)	185	40
Equity in net income (losses) of investees, net	1,255	928	3,160	2,489
Other income (expense), net	(9)	(46)	(11)	369
Nonoperating income (Expense), Total	1,265	808	3,109	2,747
Income (loss) before income taxes	5,861	4,948	16,310	15,347
Income tax (expense) benefit	(1,568)	(1,357)	(4,489)	(4,273)
Net income (loss)	4,293	3,591	11,821	11,074
Net (income) loss attributable to noncontrolling interests and redeemable subsidiary preferred stock	(87)	(45)	(229)	(165)
Net income (loss) attributable to Parent	4,206	3,546	11,592	10,909
Comprehensive income attributable to Parent	$ 4,235	$ 3,546	$ 12,134	$ 10,908

Condensed Consolidating Financial Information (Condensed Consolidating Statement of Cash Flows) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Operating Activities
Net cash provided by (used in) operating activities			$ 13,497	$ 13,813
Investing Activities
Net transactions with affiliates			0	0
Capital expenditures	$ (2,406)	$ (2,165)	(6,562)	(5,862)
Cash paid for intangible assets			(1,163)	(916)
Acquisitions and construction of real estate properties			(303)	(116)
Acquisitions, net of cash acquired			(3,904)	(286)
Proceeds from sales of businesses and investments			188	420
Purchases of investments			(618)	(712)
Deposits			(1,761)	0
Other			(29)	268
Net cash provided by (used in) investing activities			(14,152)	(7,204)
Financing Activities
Proceeds from (repayments of) short-term borrowings, net			610	(220)
Proceeds from borrowings			9,231	3,996
Repurchases and repayments of debt			(2,994)	(4,353)
Repurchases and retirements of common stock			(3,762)	(5,770)
Dividends paid			(1,944)	(1,823)
Issuances of common stock			23	35
Distributions to noncontrolling interests and dividends for redeemable subsidiary preferred stock			(194)	(178)
Other			197	(313)
Net cash provided by (used in) financing activities			1,167	(8,626)
Increase (decrease) in cash and cash equivalents			512	(2,017)
Cash and cash equivalents, beginning of period			2,295	3,910
Cash and cash equivalents, end of period	2,807	1,893	2,807	1,893
Elimination and Consolidation Adjustments [Member]
Operating Activities
Net cash provided by (used in) operating activities			0	0
Investing Activities
Net transactions with affiliates			0	0
Capital expenditures			0	0
Cash paid for intangible assets			0	0
Acquisitions and construction of real estate properties			0	0
Acquisitions, net of cash acquired			0	0
Proceeds from sales of businesses and investments			0	0
Purchases of investments			0	0
Deposits			0
Other			0	0
Net cash provided by (used in) investing activities			0	0
Financing Activities
Proceeds from (repayments of) short-term borrowings, net			0	0
Proceeds from borrowings			0	0
Repurchases and repayments of debt			0	0
Repurchases and retirements of common stock			0	0
Dividends paid			0	0
Issuances of common stock			0	0
Distributions to noncontrolling interests and dividends for redeemable subsidiary preferred stock			0	0
Other			0	0
Net cash provided by (used in) financing activities			0	0
Increase (decrease) in cash and cash equivalents			0	0
Cash and cash equivalents, beginning of period			0	0
Cash and cash equivalents, end of period	0	0	0	0
Comcast Parent [Member]
Operating Activities
Net cash provided by (used in) operating activities			(1,129)	(725)
Investing Activities
Net transactions with affiliates			(1,746)	6,786
Capital expenditures			(9)	(19)
Cash paid for intangible assets			(4)	(3)
Acquisitions and construction of real estate properties			(2)	0
Acquisitions, net of cash acquired			0	0
Proceeds from sales of businesses and investments			0	0
Purchases of investments			(23)	(3)
Deposits			0
Other			(108)	7
Net cash provided by (used in) investing activities			(1,892)	6,768
Financing Activities
Proceeds from (repayments of) short-term borrowings, net			105	0
Proceeds from borrowings			9,231	3,996
Repurchases and repayments of debt			(750)	(2,650)
Repurchases and retirements of common stock			(3,762)	(5,770)
Dividends paid			(1,944)	(1,823)
Issuances of common stock			23	35
Distributions to noncontrolling interests and dividends for redeemable subsidiary preferred stock			0	0
Other			118	169
Net cash provided by (used in) financing activities			3,021	(6,043)
Increase (decrease) in cash and cash equivalents			0	0
Cash and cash equivalents, beginning of period			0	0
Cash and cash equivalents, end of period	0	0	0	0
Comcast Holdings [Member]
Operating Activities
Net cash provided by (used in) operating activities			0	51
Investing Activities
Net transactions with affiliates			0	(51)
Capital expenditures			0	0
Cash paid for intangible assets			0	0
Acquisitions and construction of real estate properties			0	0
Acquisitions, net of cash acquired			0	0
Proceeds from sales of businesses and investments			0	0
Purchases of investments			0	0
Deposits			0
Other			0	0
Net cash provided by (used in) investing activities			0	(51)
Financing Activities
Proceeds from (repayments of) short-term borrowings, net			0	0
Proceeds from borrowings			0	0
Repurchases and repayments of debt			0	0
Repurchases and retirements of common stock			0	0
Dividends paid			0	0
Issuances of common stock			0	0
Distributions to noncontrolling interests and dividends for redeemable subsidiary preferred stock			0	0
Other			0	0
Net cash provided by (used in) financing activities			0	0
Increase (decrease) in cash and cash equivalents			0	0
Cash and cash equivalents, beginning of period			0	0
Cash and cash equivalents, end of period	0	0	0	0
CCCL Parent [Member]
Operating Activities
Net cash provided by (used in) operating activities			(179)	(24)
Investing Activities
Net transactions with affiliates			179	697
Capital expenditures			0	0
Cash paid for intangible assets			0	0
Acquisitions and construction of real estate properties			0	0
Acquisitions, net of cash acquired			0	0
Proceeds from sales of businesses and investments			0	0
Purchases of investments			0	0
Deposits			0
Other			0	0
Net cash provided by (used in) investing activities			179	697
Financing Activities
Proceeds from (repayments of) short-term borrowings, net			0	0
Proceeds from borrowings			0	0
Repurchases and repayments of debt			0	(673)
Repurchases and retirements of common stock			0	0
Dividends paid			0	0
Issuances of common stock			0	0
Distributions to noncontrolling interests and dividends for redeemable subsidiary preferred stock			0	0
Other			0	0
Net cash provided by (used in) financing activities			0	(673)
Increase (decrease) in cash and cash equivalents			0	0
Cash and cash equivalents, beginning of period			0	0
Cash and cash equivalents, end of period	0	0	0	0
NBCUniversal Media Parent [Member]
Operating Activities
Net cash provided by (used in) operating activities			(1,068)	(1,019)
Investing Activities
Net transactions with affiliates			2,150	2,249
Capital expenditures			0	0
Cash paid for intangible assets			0	0
Acquisitions and construction of real estate properties			0	0
Acquisitions, net of cash acquired			0	0
Proceeds from sales of businesses and investments			104	1
Purchases of investments			(9)	(400)
Deposits			0
Other			(35)	(5)
Net cash provided by (used in) investing activities			2,210	1,845
Financing Activities
Proceeds from (repayments of) short-term borrowings, net			0	0
Proceeds from borrowings			0	0
Repurchases and repayments of debt			(1,005)	(1,002)
Repurchases and retirements of common stock			0	0
Dividends paid			0	0
Issuances of common stock			0	0
Distributions to noncontrolling interests and dividends for redeemable subsidiary preferred stock			0	0
Other			25	0
Net cash provided by (used in) financing activities			(980)	(1,002)
Increase (decrease) in cash and cash equivalents			162	(176)
Cash and cash equivalents, beginning of period			414	385
Cash and cash equivalents, end of period	576	209	576	209
Comcast Non-Guarantor Subsidiaries [Member]
Operating Activities
Net cash provided by (used in) operating activities			15,873	15,530
Investing Activities
Net transactions with affiliates			(583)	(9,681)
Capital expenditures			(6,553)	(5,843)
Cash paid for intangible assets			(1,159)	(913)
Acquisitions and construction of real estate properties			(301)	(116)
Acquisitions, net of cash acquired			(3,904)	(286)
Proceeds from sales of businesses and investments			84	419
Purchases of investments			(586)	(309)
Deposits			(1,761)
Other			114	266
Net cash provided by (used in) investing activities			(14,649)	(16,463)
Financing Activities
Proceeds from (repayments of) short-term borrowings, net			505	(220)
Proceeds from borrowings			0	0
Repurchases and repayments of debt			(1,239)	(28)
Repurchases and retirements of common stock			0	0
Dividends paid			0	0
Issuances of common stock			0	0
Distributions to noncontrolling interests and dividends for redeemable subsidiary preferred stock			(194)	(178)
Other			54	(482)
Net cash provided by (used in) financing activities			(874)	(908)
Increase (decrease) in cash and cash equivalents			350	(1,841)
Cash and cash equivalents, beginning of period			1,881	3,525
Cash and cash equivalents, end of period	$ 2,231	$ 1,684	$ 2,231	$ 1,684