NBCUniversal Media 10-Q 25 Jul 19 2019 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information	6 Months Ended
	Jun. 30, 2019shares
Document And Entity Information [Line Items]
Document Type	10-Q
Document Fiscal Period Focus	Q2
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2019
Document Transition Report	false
Amendment Flag	false
Document Fiscal Year Focus	2019
Current Fiscal Year End Date	--12-31
Entity File Number	001-32871
Entity Registrant Name	COMCAST CORPORATION
Entity Central Index Key	0001166691
Entity Tax Identification Number	27-0000798
Entity Incorporation, State or Country Code	PA
Entity Address, Address Line One	One Comcast Center
Entity Address, City or Town	Philadelphia
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	19103-2838
City Area Code	215
Local Phone Number	286-1700
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
NBCUniversal Media LLC [Member]
Document And Entity Information [Line Items]
Entity File Number	001-36438
Entity Registrant Name	NBCUNIVERSAL MEDIA, LLC
Entity Central Index Key	0000902739
Entity Tax Identification Number	14-1682529
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	30 Rockefeller Plaza
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10112-0015
City Area Code	212
Local Phone Number	664-4444
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
2.0% Exchangeable Subordinated Debentures Due 2029 [Member]
Document And Entity Information [Line Items]
Title of 12(b) Security	2.0% Exchangeable Subordinated Debentures due 2029
Trading Symbol	CCZ
Security Exchange Name	NYSE
5.50% Notes Due 2029 [Member]
Document And Entity Information [Line Items]
Title of 12(b) Security	5.50% Notes due 2029
Trading Symbol	CCGBP29
Security Exchange Name	NYSE
9.455% Guaranteed Notes Due 2022 [Member]
Document And Entity Information [Line Items]
Title of 12(b) Security	9.455% Guaranteed Notes due 2022
Trading Symbol	CMCSA/22
Security Exchange Name	NYSE
Class A Common Stock [Member]
Document And Entity Information [Line Items]
Title of 12(b) Security	Class A Common Stock, $0.01 par value
Trading Symbol	CMCSA
Security Exchange Name	NASDAQ
Entity Common Stock, Shares Outstanding	4,535,540,993
Class B Common Stock [Member]
Document And Entity Information [Line Items]
Entity Common Stock, Shares Outstanding	9,444,375

Condensed Consolidated Statemen

Condensed Consolidated Statement of Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenue	$ 26,858	$ 21,735	$ 53,717	$ 44,526
Costs and Expenses:
Programming and production	8,255	6,300	16,824	13,729
Other operating and administrative	8,086	6,365	15,986	12,879
Advertising, marketing and promotion	1,885	1,653	3,773	3,257
Depreciation	2,197	2,021	4,437	4,032
Amortization	1,079	582	2,159	1,170
Other operating gains	0	(200)	0	(200)
Total costs and expenses	21,502	16,721	43,179	34,867
Operating income	5,356	5,014	10,538	9,659
Interest expense	(1,137)	(806)	(2,287)	(1,583)
Investment and other income (loss), net	(55)	77	621	203
Income before income taxes	4,164	4,285	8,872	8,279
Income tax expense	(961)	(1,077)	(2,037)	(1,895)
Net income	3,203	3,208	6,835	6,384
Less: Net income (loss) attributable to noncontrolling interests and redeemable subsidiary preferred stock	78	(8)	157	50
Net income attributable to Comcast Corporation	$ 3,125	$ 3,216	$ 6,678	$ 6,334
Basic earnings per common share attributable to Comcast Corporation shareholders (in dollars per share)	$ 0.69	$ 0.70	$ 1.47	$ 1.37
Diluted earnings per common share attributable to Comcast Corporation shareholders (in dollars per share)	$ 0.68	$ 0.69	$ 1.45	$ 1.36
NBCUniversal Media LLC [Member]
Revenue	$ 8,227	$ 8,313	$ 16,572	$ 17,843
Costs and Expenses:
Programming and production	3,217	3,478	6,651	8,051
Other operating and administrative	2,048	1,955	3,930	3,927
Advertising, marketing and promotion	651	720	1,333	1,420
Depreciation	253	258	496	500
Amortization	274	295	546	563
Total costs and expenses	6,443	6,706	12,956	14,461
Operating income	1,784	1,607	3,616	3,382
Interest expense	(122)	(133)	(253)	(260)
Investment and other income (loss), net	40	(168)	280	(172)
Income before income taxes	1,702	1,306	3,643	2,950
Income tax expense	(73)	(88)	(176)	(179)
Net income	1,629	1,218	3,467	2,771
Less: Net income (loss) attributable to noncontrolling interests	58	(29)	112	11
Net income attributable to Comcast Corporation	$ 1,571	$ 1,247	$ 3,355	$ 2,760

Condensed Consolidated Statem_2

Condensed Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Net income	$ 3,203	$ 3,208	$ 6,835	$ 6,384
Unrealized gains (losses) on marketable securities, net of deferred taxes	1	(1)	2	(2)
Deferred gains (losses) on cash flow hedges, net of deferred taxes	123	(40)	64	(11)
Amounts reclassified to net income:
Realized (gains) losses on cash flow hedges, net of deferred taxes	(45)	46	13	26
Employee benefit obligations, net of deferred taxes	(9)	(8)	(16)	(16)
Currency translation adjustments, net of deferred taxes	(566)	(173)	241	(16)
Comprehensive income	2,707	3,032	7,139	6,365
Less: Net income (loss) attributable to noncontrolling interests and redeemable subsidiary preferred stock	78	(8)	157	50
Less: Other comprehensive income (loss) attributable to noncontrolling interests	(12)	(29)	(2)	(25)
Comprehensive income (loss) attributable to Comcast Corporation	2,641	3,069	6,984	6,340
NBCUniversal Media LLC [Member]
Net income	1,629	1,218	3,467	2,771
Deferred gains (losses) on cash flow hedges, net of deferred taxes	(2)	11	(3)	(2)
Amounts reclassified to net income:
Employee benefit obligations, net of deferred taxes	(3)	(3)	(5)	(7)
Currency translation adjustments, net of deferred taxes	66	(215)	47	(11)
Comprehensive income	1,690	1,011	3,506	2,751
Less: Net income (loss) attributable to noncontrolling interests	58	(29)	112	11
Less: Other comprehensive income (loss) attributable to noncontrolling interests	(12)	(29)	(2)	(25)
Comprehensive income (loss) attributable to Comcast Corporation	$ 1,644	$ 1,069	$ 3,396	$ 2,765

Condensed Consolidated Statem_3

Condensed Consolidated Statement of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Unrealized gains (losses) on marketable securities, deferred taxes	$ 0	$ 0	$ 0	$ 0
Deferred gains (losses) on cash flow hedges, deferred taxes	2	12	11	3
Realized (gains) losses on cash flow hedges, deferred taxes	7	(14)	(4)	(8)
Employee benefit obligations, deferred taxes	2	3	5	5
Currency translation adjustments, deferred taxes	$ (6)	$ 44	$ (18)	$ (3)

Condensed Consolidated Statem_4

Condensed Consolidated Statement of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Operating Activities
Net income	$ 6,835	$ 6,384
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and other operating gains	6,596	5,002
Share-based compensation	533	410
Noncash interest expense (income), net	168	171
Net (gain) loss on investment activity and other	(367)	(68)
Deferred income taxes	466	814
Changes in operating assets and liabilities, net of effects of acquisitions and divestitures:
Current and noncurrent receivables, net	295	(60)
Film and television costs, net	970	68
Accounts payable and accrued expenses related to trade creditors	(815)	(119)
Other operating assets and liabilities	(410)	(65)
Net cash provided by operating activities	14,271	12,537
Investing Activities
Capital expenditures	(4,355)	(4,223)
Cash paid for intangible assets	(1,078)	(930)
Acquisitions and construction of real estate properties	(36)	(104)
Construction of Universal Beijing Resort	(450)	(116)
Acquisitions, net of cash acquired	(114)	(88)
Proceeds from sales of businesses and investments	150	113
Purchases of investments	(1,605)	(538)
Other	74	580
Net cash provided by (used in) investing activities	(7,414)	(5,306)
Financing Activities
Proceeds from (repayments of) short-term borrowings, net	(801)	23
Proceeds from borrowings	363	4,279
Repurchases and repayments of debt	(4,156)	(4,347)
Repurchases of common stock under repurchase program and employee plans	(350)	(2,998)
Dividends paid	(1,823)	(1,616)
Distributions to noncontrolling interests and dividends for redeemable subsidiary preferred stock	(155)	(140)
Other	190	(161)
Net cash provided by (used in) financing activities	(6,732)	(4,960)
Impact of foreign currency on cash, cash equivalents and restricted cash	(15)	0
Increase (decrease) in cash, cash equivalents and restricted cash	110	2,271
Cash, cash equivalents and restricted cash, beginning of period	3,909	3,571
Cash, cash equivalents and restricted cash, end of period	4,019	5,842
NBCUniversal Media LLC [Member]
Operating Activities
Net income	3,467	2,771
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,042	1,063
Net (gain) loss on investment activity and other	(115)	232
Deferred income taxes	7	0
Changes in operating assets and liabilities, net of effects of acquisitions and divestitures:
Current and noncurrent receivables, net	69	(42)
Film and television costs, net	(152)	77
Accounts payable and accrued expenses related to trade creditors	(113)	(169)
Other operating assets and liabilities	(472)	(497)
Net cash provided by operating activities	3,733	3,435
Investing Activities
Capital expenditures	(926)	(730)
Cash paid for intangible assets	(136)	(296)
Note receivable from Comcast	(480)	0
Construction of Universal Beijing Resort	(450)	(116)
Purchases of investments	(1,013)	(288)
Other	(6)	(56)
Net cash provided by (used in) investing activities	(3,011)	(1,486)
Financing Activities
Proceeds from borrowings	426	245
Repurchases and repayments of debt	(91)	(332)
Proceeds from (repayments of) borrowings from Comcast, net	27	(1,692)
Distributions to member	(1,254)	(990)
Distributions to noncontrolling interests	(119)	(111)
Other	89	(132)
Net cash provided by (used in) financing activities	(922)	(3,012)
Increase (decrease) in cash, cash equivalents and restricted cash	(200)	(1,063)
Cash, cash equivalents and restricted cash, beginning of period	1,464	2,377
Cash, cash equivalents and restricted cash, end of period	$ 1,264	$ 1,314

Condensed Consolidated Balance

Condensed Consolidated Balance Sheet - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Current Assets:
Cash and cash equivalents	$ 3,919	$ 3,814
Receivables, net	10,835	11,104
Programming rights	1,947	3,746
Other current assets	4,660	3,184
Total current assets	21,361	21,848
Film and television costs	8,553	7,837
Investments	8,438	7,883
Property and equipment, net	46,047	44,437
Franchise rights	59,365	59,365
Goodwill	67,945	66,154
Other intangible assets, net	36,076	38,358
Other noncurrent assets, net	8,770	5,802
Total assets	256,555	251,684
Current Liabilities:
Accounts payable and accrued expenses related to trade creditors	10,014	8,494
Accrued participations and residuals	1,683	1,808
Deferred revenue	2,642	2,182
Accrued expenses and other current liabilities	10,304	10,721
Current portion of long-term debt	6,365	4,398
Total current liabilities	31,008	27,603
Long-term debt, less current portion	101,248	107,345
Deferred income taxes	27,996	27,589
Other noncurrent liabilities	17,144	15,329
Commitments and contingencies (Note 11)
Redeemable noncontrolling interests	1,329	1,316
Equity:
Preferred stock—authorized, 20,000,000 shares; issued, zero	0	0
Common stock	54	54
Additional paid-in capital	37,950	37,461
Retained earnings	46,425	41,983
Treasury stock, 872,791,028 Class A common shares	(7,517)	(7,517)
Accumulated other comprehensive income (loss)	(62)	(368)
Total Comcast Corporation shareholders’ equity	76,850	71,613
Noncontrolling interests	980	889
Total equity	77,830	72,502
Total liabilities and equity	256,555	251,684
NBCUniversal Media LLC [Member]
Current Assets:
Cash and cash equivalents	1,244	1,444
Receivables, net	7,194	7,293
Programming rights	1,156	1,323
Note receivable from Comcast	2,534	2,054
Other current assets	1,170	1,133
Total current assets	13,298	13,247
Film and television costs	7,596	7,292
Investments	2,678	1,680
Property and equipment, net	14,316	13,189
Goodwill	24,152	24,118
Intangible assets, net	13,332	13,666
Other noncurrent assets, net	3,519	1,822
Total assets	78,891	75,014
Current Liabilities:
Accounts payable and accrued expenses related to trade creditors	1,985	1,933
Accrued participations and residuals	1,683	1,808
Program obligations	619	965
Deferred revenue	1,484	1,118
Accrued expenses and other current liabilities	2,015	2,195
Note payable to Comcast	197	54
Current portion of long-term debt	2,198	151
Total current liabilities	10,181	8,224
Long-term debt, less current portion	11,155	12,731
Accrued participations, residuals and program obligations	1,674	1,712
Other noncurrent liabilities	6,668	5,177
Commitments and contingencies (Note 11)
Redeemable noncontrolling interests	401	389
Equity:
Member’s capital	47,529	45,618
Accumulated other comprehensive income (loss)	295	254
Total NBCUniversal member’s equity	47,824	45,872
Noncontrolling interests	988	909
Total equity	48,812	46,781
Total liabilities and equity	78,891	75,014
Class A Common Stock [Member]
Equity:
Common stock	54	54
Class B Common Stock [Member]
Equity:
Common stock	$ 0	$ 0

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheet (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Property and equipment - accumulated depreciation	$ 52,467	$ 51,306
Other intangible assets - accumulated amortization	$ 15,894	$ 14,194
Preferred stock, shares authorized (in shares)	20,000,000	20,000,000
Preferred stock, shares issued (in shares)	0	0
NBCUniversal Media LLC [Member]
Property and equipment - accumulated depreciation	$ 5,424	$ 4,994
Other intangible assets - accumulated amortization	$ 9,138	$ 8,590
Class A Common Stock [Member]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	7,500,000,000	7,500,000,000
Common stock, shares issued (in shares)	5,408,332,021	5,389,309,175
Common stock, shares outstanding (in shares)	4,535,540,993	4,516,518,147
Treasury stock (in shares)	872,791,028	872,791,028
Class B Common Stock [Member]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	75,000,000	75,000,000
Common stock, shares issued (in shares)	9,444,375	9,444,375
Common stock, shares outstanding (in shares)	9,444,375	9,444,375

Condensed Consolidated Statem_5

Condensed Consolidated Statement of Changes in Equity - USD ($) $ in Millions	Total	Redeemable Noncontrolling Interests and Redeemable Subsidiary Preferred Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock at Cost [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interest [Member]	NBCUniversal Media LLC [Member]	NBCUniversal Media LLC [Member]Redeemable Noncontrolling Interest [Member]	NBCUniversal Media LLC [Member]Member's Capital [Member]	NBCUniversal Media LLC [Member]Accumulated Other Comprehensive Income (Loss) [Member]	NBCUniversal Media LLC [Member]Noncontrolling Interest [Member]	Class A Common Stock [Member]Common Stock [Member]
Beginning balance at Dec. 31, 2017		$ 1,357							$ 409
Increase (Decrease) in Temporary Equity [Roll Forward]
Contributions from (distributions to) noncontrolling interests, net		(31)							(33)
Other		(24)							(5)
Net income (loss)		41							20
Ending balance at Jun. 30, 2018		1,343							391
Beginning balance at Dec. 31, 2017			$ 37,497	$ 38,202	$ (7,517)	$ 379	$ 843						$ 55
Beginning balance at Dec. 31, 2017										$ 42,148	$ (20)	$ 913
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Distributions to member										(990)
Stock compensation plans			290
Repurchases of common stock under repurchase program and employee plans			(529)	(2,466)									(1)
Employee stock purchase plans			112
Dividends declared				(1,760)
Other comprehensive income (loss)						6	(25)				6	(25)
Contributions from (distributions to) noncontrolling interests, net							317					313
Other			57	2			(95)			91		(102)
Net income (loss)				6,334			9			2,760		(9)
Ending balance at Jun. 30, 2018	$ 71,743		37,427	40,269	(7,517)	461	1,049						54
Ending balance at Jun. 30, 2018								$ 45,085		43,777	218	1,090
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared per common share (in dollars per share)	$ 0.38
Beginning balance at Mar. 31, 2018		1,354							405
Increase (Decrease) in Temporary Equity [Roll Forward]
Contributions from (distributions to) noncontrolling interests, net		(14)							(16)
Other		(14)							(5)
Net income (loss)		17							7
Ending balance at Jun. 30, 2018		1,343							391
Beginning balance at Mar. 31, 2018			37,375	38,961	(7,517)	608	1,228						55
Beginning balance at Mar. 31, 2018										43,228	396	1,286
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Distributions to member										(795)
Stock compensation plans			163
Repurchases of common stock under repurchase program and employee plans			(235)	(1,034)									(1)
Employee stock purchase plans			64
Dividends declared				(876)
Other comprehensive income (loss)						(147)	(29)				(178)	(29)
Contributions from (distributions to) noncontrolling interests, net							(33)					(33)
Other			60	2			(92)			97		(98)
Net income (loss)				3,216			(25)			1,247		(36)
Ending balance at Jun. 30, 2018	$ 71,743		37,427	40,269	(7,517)	461	1,049						54
Ending balance at Jun. 30, 2018								45,085		43,777	218	1,090
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared per common share (in dollars per share)	$ 0.19
Beginning balance at Dec. 31, 2018	$ 1,316	1,316						389	389
Increase (Decrease) in Temporary Equity [Roll Forward]
Contributions from (distributions to) noncontrolling interests, net		(37)							(38)
Other		(19)							0
Net income (loss)		69							50
Ending balance at Jun. 30, 2019	1,329	1,329						401	401
Beginning balance at Dec. 31, 2018	72,502		37,461	41,983	(7,517)	(368)	889						54
Beginning balance at Dec. 31, 2018								46,781		45,618	254	909
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Distributions to member										(1,444)
Stock compensation plans			411
Repurchases of common stock under repurchase program and employee plans			(45)	(305)									0
Employee stock purchase plans			115
Dividends declared				(1,928)
Other comprehensive income (loss)						306	(2)				41	(2)
Contributions from (distributions to) noncontrolling interests, net							16					25
Other			8	(3)			(11)			0		(6)
Net income (loss)				6,678			88			3,355		62
Ending balance at Jun. 30, 2019	$ 77,830		37,950	46,425	(7,517)	(62)	980						54
Ending balance at Jun. 30, 2019								48,812		47,529	295	988
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared per common share (in dollars per share)	$ 0.42
Beginning balance at Mar. 31, 2019		1,316							382
Increase (Decrease) in Temporary Equity [Roll Forward]
Contributions from (distributions to) noncontrolling interests, net		(17)							(15)
Other		(11)							0
Net income (loss)		41							34
Ending balance at Jun. 30, 2019	$ 1,329	$ 1,329						401	$ 401
Beginning balance at Mar. 31, 2019			37,621	44,379	(7,517)	422	903						54
Beginning balance at Mar. 31, 2019										47,164	222	908
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Distributions to member										(1,206)
Stock compensation plans			237
Repurchases of common stock under repurchase program and employee plans			17	(112)									0
Employee stock purchase plans			67
Dividends declared				(964)
Other comprehensive income (loss)						(484)	(12)				73	(12)
Contributions from (distributions to) noncontrolling interests, net							62					71
Other			8	(3)			(10)			0		(3)
Net income (loss)				3,125			37			1,571		24
Ending balance at Jun. 30, 2019	$ 77,830		$ 37,950	$ 46,425	$ (7,517)	$ (62)	$ 980						$ 54
Ending balance at Jun. 30, 2019								$ 48,812		$ 47,529	$ 295	$ 988
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared per common share (in dollars per share)	$ 0.21

Condensed Consolidated Financia

Condensed Consolidated Financial Statements	6 Months Ended
	Jun. 30, 2019
Condensed Consolidated Financial Statements [Line Items]
Condensed Consolidated Financial Statements	Condensed Consolidated Financial Statements Business and 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, cash flows and financial condition 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 2018 Annual Report on Form 10-K and the notes within this Form 10-Q. In the fourth quarter of 2018, we acquired a 100% interest in Sky through a series of transactions, for total cash consideration of £30.2 billion (approximately $39.4 billion using the exchange rates on the purchase dates). See Note 6 for additional information on the transaction. Reclassifications Reclassifications have been made to our condensed consolidated financial statements for the prior year periods to conform to classifications used in 2019 . See Note 7 for a discussion of the effects of the adoption of new accounting pronouncements on our condensed consolidated financial statements.
NBCUniversal Media LLC [Member]
Condensed Consolidated Financial Statements [Line Items]
Condensed Consolidated Financial Statements	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, cash flows and financial condition 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 2018 Annual Report on Form 10-K and the notes within this Form 10-Q. See Note 6 for a discussion of the effects of the adoption of new accounting pronouncements on our condensed consolidated financial statements.

Segment Information

Segment Information	6 Months Ended
	Jun. 30, 2019
Segment Reporting Information [Line Items]
Segment Information	Segment Information We present our operations in six reportable business segments: (1) Comcast Cable in one reportable business segment, referred to as Cable Communications; (2) NBCUniversal in four reportable business segments: Cable Networks, Broadcast Television, Filmed Entertainment and Theme Parks (collectively, the “NBCUniversal segments”); and (3) Sky in one reportable business segment. Our Cable Communications segment consists of the operations of Comcast Cable, which is one of the nation’s largest providers of high-speed internet, video, voice, wireless, and security and automation services (“cable services”) to residential customers under the Xfinity brand ; we also provide these and other services to business customers and sell advertising. Our Cable Networks segment consists primarily of our national cable networks that provide a variety of entertainment, news and information, and sports content, our regional sports and news networks, our international cable networks, our cable television studio production operations, and various digital properties. Our Broadcast Television segment consists primarily of the NBC and Telemundo broadcast networks, our NBC and Telemundo owned local broadcast television stations, the NBC Universo national cable network, our broadcast television studio production operations, and various digital properties. Our Filmed Entertainment segment consists primarily of the operations of Universal Pictures, which produces, acquires, markets and distributes filmed entertainment worldwide; our films are also produced under the Illumination, DreamWorks Animation and Focus Features names. Our Theme Parks segment consists primarily of our Universal theme parks in Orlando, Florida; Hollywood, California; and Osaka, Japan. In addition, along with a consortium of Chinese state-owned companies, we are developing a Universal theme park and resort in Beijing, China. Our Sky segment consists of the operations of Sky, one of Europe’s leading entertainment companies, which primarily includes a direct-to-consumer business, providing video, high-speed internet, voice and wireless phone services, and a content business, operating entertainment networks, the Sky News broadcast network and Sky Sports networks. Our other business interests consist primarily of the operations of Comcast Spectacor, which owns the Philadelphia Flyers and the Wells Fargo Center arena in Philadelphia, Pennsylvania. We use Adjusted EBITDA to evaluate the profitability of our operating segments and the components of net income attributable to Comcast Corporation excluded from Adjusted EBITDA are not separately evaluated. Beginning in the first quarter of 2019, Comcast Cable’s wireless phone service and certain other Cable-related business development initiatives are now presented in the Cable Communications segment. Results were previously presented in Corporate and Other. Prior periods have been adjusted to reflect this presentation. To be consistent with our current management reporting presentation, certain 2018 operating results were reclassified related to certain NBCUniversal businesses now presented in the Sky segment. Our financial data by business segment is presented in the tables below. Three Months Ended June 30, 2019 (in millions) Revenue Adjusted EBITDA (d) Depreciation and Amortization Capital Cash Paid for Intangible Assets Cable Communications $ 14,450 $ 5,854 $ 2,036 $ 1,594 $ 303 NBCUniversal Cable Networks 2,947 1,201 183 6 4 Broadcast Television 2,402 534 40 37 3 Filmed Entertainment 1,457 183 20 4 6 Theme Parks 1,464 590 170 378 17 Headquarters and Other (a) 22 (182 ) 114 48 35 Eliminations (b) (86 ) (2 ) — — — NBCUniversal 8,206 2,324 527 473 65 Sky 4,828 772 673 177 152 Corporate and Other (c) 56 (213 ) 40 19 11 Eliminations (b) (682 ) (21 ) — — — Comcast Consolidated $ 26,858 $ 8,716 $ 3,276 $ 2,263 $ 531 Three Months Ended June 30, 2018 (in millions) Revenue Adjusted EBITDA (d) Depreciation and Amortization Capital Cash Paid for Intangible Assets Cable Communications $ 13,912 $ 5,449 $ 2,023 $ 1,767 $ 344 NBCUniversal Cable Networks 2,874 1,176 179 8 5 Broadcast Television 2,391 417 40 32 3 Filmed Entertainment 1,710 138 63 8 8 Theme Parks 1,361 569 167 360 119 Headquarters and Other (a) 15 (148 ) 104 53 31 Eliminations (b) (78 ) (2 ) — — — NBCUniversal 8,273 2,150 553 461 166 Corporate and Other (c) 96 (192 ) 27 22 1 Eliminations (b) (546 ) 10 — — — Comcast Consolidated $ 21,735 $ 7,417 $ 2,603 $ 2,250 $ 511 Six Months Ended June 30, 2019 (in millions) Revenue Adjusted EBITDA (d) Depreciation and Amortization Capital Expenditures Cash Paid for Intangible Assets Cable Communications $ 28,730 $ 11,582 $ 4,071 $ 2,957 $ 626 NBCUniversal Cable Networks 5,815 2,463 365 12 6 Broadcast Television 4,869 921 79 50 6 Filmed Entertainment 3,225 547 39 8 11 Theme Parks 2,740 1,088 332 772 36 Headquarters and Other (a) 39 (356 ) 227 84 77 Eliminations (b) (169 ) (2 ) — — — NBCUniversal 16,519 4,661 1,042 926 136 Sky 9,625 1,435 1,414 436 303 Corporate and Other (c) 164 (400 ) 69 36 13 Eliminations (b) (1,321 ) (9 ) — — — Comcast Consolidated $ 53,717 $ 17,269 $ 6,596 $ 4,355 $ 1,078 Six Months Ended June 30, 2018 (in millions) Revenue Adjusted EBITDA (d) Depreciation and Amortization Capital Expenditures Cash Paid for Intangible Assets Cable Communications $ 27,615 $ 10,666 $ 4,084 $ 3,458 $ 631 NBCUniversal Cable Networks (e) 6,031 2,430 368 11 9 Broadcast Television (e) 5,888 924 74 62 75 Filmed Entertainment 3,357 341 91 15 14 Theme Parks 2,642 1,064 322 542 135 Headquarters and Other (a) 29 (336 ) 208 100 63 Eliminations (b)(e) (177 ) (2 ) — — — NBCUniversal 17,770 4,421 1,063 730 296 Corporate and Other (c) 339 (377 ) 55 35 3 Eliminations (b)(e) (1,198 ) (49 ) — — — Comcast Consolidated $ 44,526 $ 14,661 $ 5,202 $ 4,223 $ 930 (a) NBCUniversal Headquarters and Other activities include costs associated with overhead, allocations, personnel costs and headquarter initiatives. (b) Included in Eliminations are transactions that our segments entered 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 Cable Networks and Broadcast Television segments generate revenue by selling advertising to our Cable Communications segment • our Filmed Entertainment and Broadcast Television segments generate revenue by licensing content to our Cable Networks segment; for segment reporting, this revenue is recognized as the programming rights asset for the licensed content is amortized based on third party revenue • our Filmed Entertainment, Cable Networks and Broadcast Television segments generate revenue by licensing content to our Sky segment (c) Corporate and Other activities include costs associated with overhead and personnel, revenue and expenses associated with operations of Comcast Spectacor, which owns the Philadelphia Flyers and the Wells Fargo Center arena in Philadelphia, Pennsylvania, as well as other business development initiatives. (d) We use Adjusted EBITDA as the measure of profit or loss for our operating segments. Adjusted EBITDA is defined as net income attributable to Comcast Corporation before net income (loss) attributable to noncontrolling interests and redeemable subsidiary preferred stock, income tax expense, investment and other income (loss), net, interest expense, depreciation and amortization expense, and other operating gains and losses (such as impairment charges related to fixed and intangible assets and gains or losses on the sale of long-lived assets), if any. From time to time, we may exclude from Adjusted EBITDA the impact of certain events, gains, losses or other charges (such as significant legal settlements) that affect the period-to-period comparability of our operating performance. Our reconciliation of the aggregate amount of Adjusted EBITDA for our reportable segments to consolidated income before income taxes is presented in the table below. Three Months Ended Six Months Ended (in millions) 2019 2018 2019 2018 Adjusted EBITDA $ 8,716 $ 7,417 $ 17,269 $ 14,661 Adjustment for Sky transaction-related costs (84 ) — (135 ) — Depreciation (2,197 ) (2,021 ) (4,437 ) (4,032 ) Amortization (1,079 ) (582 ) (2,159 ) (1,170 ) Other operating gains — 200 — 200 Interest expense (1,137 ) (806 ) (2,287 ) (1,583 ) Investment and other income (loss), net (55 ) 77 621 203 Income before income taxes $ 4,164 $ 4,285 $ 8,872 $ 8,279 (e) The re venue and operating costs and expenses associated with our broadcast of the 2018 PyeongChang Olympics were reported in our Cable Networks and Broadcast Television segments. The revenue and operating costs and expenses associated with our broadcast of the 2018 Super Bowl were reported in our Broadcast Television segment. Included in Eliminations are transactions relating to these events that our Broadcast Television and Cable Networks segments entered into with our other segments.
NBCUniversal Media LLC [Member]
Segment Reporting Information [Line Items]
Segment Information	Segment Information We present our operations in four reportable business segments: Our Cable Networks segment consists primarily of our national cable networks that provide a variety of entertainment, news and information, and sports content, our regional sports and news networks, our international cable networks, our cable television studio production operations, and various digital properties. Our Broadcast Television segment consists primarily of the NBC and Telemundo broadcast networks, our NBC and Telemundo owned local broadcast television stations, the NBC Universo national cable network, our broadcast television studio production operations, and various digital properties. Our Filmed Entertainment segment consists primarily of the operations of Universal Pictures, which produces, acquires, markets and distributes filmed entertainment worldwide; our films are also produced under the Illumination, DreamWorks Animation and Focus Features names. Our Theme Parks segment consists primarily of our Universal theme parks in Orlando, Florida; Hollywood, California; and Osaka, Japan. In addition, along with a consortium of Chinese state-owned companies, we are developing a Universal theme park and resort in Beijing, China. We use Adjusted EBITDA to evaluate the profitability of our operating segments and the components of net income attributable to NBCUniversal excluded from Adjusted EBITDA are not separately evaluated. To be consistent with our current management reporting presentation, 2018 operating results were reclassified related to certain NBCUniversal businesses now presented in Headquarters and Other. Our financial data by business segment is presented in the tables below. Three Months Ended June 30, 2019 (in millions) Revenue Adjusted EBITDA (c) Depreciation and Amortization Capital Cash Paid for Intangible Assets Cable Networks $ 2,947 $ 1,201 $ 183 $ 6 $ 4 Broadcast Television 2,402 534 40 37 3 Filmed Entertainment 1,457 183 20 4 6 Theme Parks 1,464 590 170 378 17 Headquarters and Other (a) 45 (195 ) 114 48 35 Eliminations (b) (88 ) (2 ) — — — Total $ 8,227 $ 2,311 $ 527 $ 473 $ 65 Three Months Ended June 30, 2018 (in millions) Revenue Adjusted EBITDA (c) Depreciation and Amortization Capital Cash Paid for Intangible Assets Cable Networks $ 2,874 $ 1,176 $ 179 $ 8 $ 5 Broadcast Television 2,391 417 40 32 3 Filmed Entertainment 1,710 138 63 8 8 Theme Parks 1,361 569 167 360 119 Headquarters and Other (a) 57 (138 ) 104 53 31 Eliminations (b) (80 ) (2 ) — — — Total $ 8,313 $ 2,160 $ 553 $ 461 $ 166 Six Months Ended June 30, 2019 (in millions) Revenue Adjusted EBITDA (c) Depreciation and Amortization Capital Expenditures Cash Paid for Intangible Assets Cable Networks $ 5,815 $ 2,463 $ 365 $ 12 $ 6 Broadcast Television 4,869 921 79 50 6 Filmed Entertainment 3,225 547 39 8 11 Theme Parks 2,740 1,088 332 772 36 Headquarters and Other (a) 96 (359 ) 227 84 77 Eliminations (b) (173 ) (2 ) — — — Total $ 16,572 $ 4,658 $ 1,042 $ 926 $ 136 Six Months Ended June 30, 2018 (in millions) Revenue Adjusted EBITDA (c) Depreciation and Amortization Capital Expenditures Cash Paid for Intangible Assets Cable Networks (d) $ 6,031 $ 2,430 $ 368 $ 11 $ 9 Broadcast Television (d) 5,888 924 74 62 75 Filmed Entertainment 3,357 341 91 15 14 Theme Parks 2,642 1,064 322 542 135 Headquarters and Other (a) 108 (312 ) 208 100 63 Eliminations (b)(d) (183 ) (2 ) — — — Total $ 17,843 $ 4,445 $ 1,063 $ 730 $ 296 (a) Headquarters and Other activities include costs associated with overhead, allocations, personnel costs and headquarter initiatives. (b) Included in Eliminations are transactions that our segments enter into with one another, which consisted primarily of the licensing of film and television content from our Filmed Entertainment and Broadcast Television segments to our Cable Networks segment; for segment reporting, this revenue is recognized as the programming rights asset for the licensed content is amortized based on third party revenue. (c) We use Adjusted EBITDA as the measure of profit or loss for our operating segments. Adjusted EBITDA is defined as net income attributable to NBCUniversal before net income (loss) attributable to noncontrolling interests, income tax expense, investment and other income (loss), net, interest expense, depreciation and amortization expense, and other operating gains and losses (such as impairment charges related to fixed and intangible assets and gains or losses on the sale of long-lived assets), if any. From time to time, we may exclude from Adjusted EBITDA the impact of certain events, gains, losses or other charges (such as significant legal settlements) that affect the period-to-period comparability of our operating performance. Our reconciliation of the aggregate amount of Adjusted EBITDA for our reportable segments to consolidated income before income taxes is presented in the table below. Three Months Ended Six Months Ended (in millions) 2019 2018 2019 2018 Adjusted EBITDA $ 2,311 $ 2,160 $ 4,658 $ 4,445 Depreciation (253 ) (258 ) (496 ) (500 ) Amortization (274 ) (295 ) (546 ) (563 ) Interest expense (122 ) (133 ) (253 ) (260 ) Investment and other income (loss), net 40 (168 ) 280 (172 ) Income before income taxes $ 1,702 $ 1,306 $ 3,643 $ 2,950 (d) The rev enue and operating costs and expenses associated with our broadcast of the 2018 PyeongChang Olympics were reported in our Cable Networks and Broadcast Television segments. The revenue and operating costs and expenses associated with our broadcast of the 2018 Super Bowl were reported in our Broadcast Television segment. Included in Eliminations are transactions relating to these events that our Broadcast Television and Cable Networks segments entered into with our other segments.

Revenue

Revenue	6 Months Ended
	Jun. 30, 2019
Revenue [Line Items]
Revenue	Revenue Three Months Ended Six Months Ended (in millions) 2019 2018 2019 2018 Residential: High-speed internet $ 4,663 $ 4,262 $ 9,240 $ 8,419 Video 5,594 5,628 11,222 11,287 Voice 982 994 1,972 2,000 Wireless 244 202 469 387 Business services 1,933 1,761 3,824 3,487 Advertising 607 666 1,163 1,248 Other 427 399 840 787 Total Cable Communications (a)(b) 14,450 13,912 28,730 27,615 Distribution 1,707 1,650 3,442 3,511 Advertising 931 929 1,783 1,906 Content licensing and other 309 295 590 614 Total Cable Networks 2,947 2,874 5,815 6,031 Advertising 1,329 1,387 2,646 3,752 Content licensing 472 481 1,032 1,003 Distribution and other 601 523 1,191 1,133 Total Broadcast Television 2,402 2,391 4,869 5,888 Theatrical 252 540 697 963 Content licensing 712 648 1,529 1,381 Home entertainment 229 225 496 473 Other 264 297 503 540 Total Filmed Entertainment 1,457 1,710 3,225 3,357 Total Theme Parks 1,464 1,361 2,740 2,642 Headquarters and Other 22 15 39 29 Eliminations (c) (86 ) (78 ) (169 ) (177 ) Total NBCUniversal 8,206 8,273 16,519 17,770 Direct-to-consumer 3,889 — 7,723 — Content 376 — 746 — Advertising 563 — 1,156 — Total Sky 4,828 — 9,625 — Corporate and Other (b) 56 96 164 339 Eliminations (c) (682 ) (546 ) (1,321 ) (1,198 ) Total revenue $ 26,858 $ 21,735 $ 53,717 $ 44,526 (a) For both the three and six months ended June 30, 2019 , 2.5% of Cable Communications segment revenue was derived from franchise and other regulatory fees. For both the three and six months ended June 30, 2018 , 2.7% of Cable Communications segment revenue was derived from franchise and other regulatory fees. (b) Comcast Cable’s wireless phone service is now presented in the Cable Communications segment. Results were previously presented in Corporate and Other. We recognize revenue from our wireless phone service as the services are provided, similar to how we recognize revenue for other residential cable services. We recognize revenue from the sale of handsets at the point of sale. (c) Included in Eliminations are transactions that our segments enter into with one another. See Note 2 for a description of these transactions. We operate primarily in the United States but also in select international markets. The table below summarizes revenue by geographic location. Three Months Ended Six Months Ended (in millions) 2019 2018 2019 2018 United States $ 20,539 $ 19,931 $ 40,996 $ 40,816 Europe 5,297 699 10,667 1,520 Other 1,022 1,105 2,054 2,190 Total revenue $ 26,858 $ 21,735 $ 53,717 $ 44,526 No single customer accounted for a significant amount of revenue in any period presented. Condensed Consolidated Balance Sheet The following tables summarize our accounts receivable and other balances that are not separately presented in our condensed consolidated balance sheet that relate to the recognition of revenue and collection of the related cash , as well as deferred costs associated with our contracts with customers. (in millions) June 30, December 31, Receivables, gross $ 11,381 $ 11,456 Less: Allowance for doubtful accounts 546 352 Receivables, net $ 10,835 $ 11,104 (in millions) June 30, December 31, Noncurrent receivables, net (included in other noncurrent assets, net) $ 1,306 $ 1,399 Contract acquisition and fulfillment costs (included in other noncurrent assets, net) $ 1,037 $ 991 Noncurrent deferred revenue (included in other noncurrent liabilities) $ 888 $ 650
NBCUniversal Media LLC [Member]
Revenue [Line Items]
Revenue	Revenue Three Months Ended Six Months Ended (in millions) 2019 2018 2019 2018 Distribution $ 1,707 $ 1,650 $ 3,442 $ 3,511 Advertising 931 929 1,783 1,906 Content licensing and other 309 295 590 614 Total Cable Networks 2,947 2,874 5,815 6,031 Advertising 1,329 1,387 2,646 3,752 Content licensing 472 481 1,032 1,003 Distribution and other 601 523 1,191 1,133 Total Broadcast Television 2,402 2,391 4,869 5,888 Theatrical 252 540 697 963 Content licensing 712 648 1,529 1,381 Home entertainment 229 225 496 473 Other 264 297 503 540 Total Filmed Entertainment 1,457 1,710 3,225 3,357 Total Theme Parks 1,464 1,361 2,740 2,642 Headquarters and Other 45 57 96 108 Eliminations (a) (88 ) (80 ) (173 ) (183 ) Total revenue $ 8,227 $ 8,313 $ 16,572 $ 17,843 (a) Included in Eliminations are transactions that our segments enter into with one another. See Note 2 for a description of these transactions. We operate primarily in the United States, but also in select international markets primarily in Europe and Asia. The table below summarizes revenue by geographic location. Three Months Ended Six Months Ended (in millions) 2019 2018 2019 2018 United States $ 6,669 $ 6,533 $ 13,292 $ 14,187 Foreign 1,558 1,780 3,280 3,656 Total revenue $ 8,227 $ 8,313 $ 16,572 $ 17,843 No single customer accounted for a significant amount of revenue in any period presented. Condensed Consolidated Balance Sheet The following tables summarize our accounts receivable and other balances that are not separately presented in our condensed consolidated balance sheet that relate to the recognition of revenue and collection of the related cash . (in millions) June 30, December 31, Receivables, gross $ 7,304 $ 7,392 Less: Allowance for doubtful accounts 110 99 Receivables, net $ 7,194 $ 7,293 (in millions) June 30, December 31, Noncurrent receivables, net (included in other noncurrent assets, net) $ 1,181 $ 1,180 Noncurrent deferred revenue (included in other noncurrent liabilities) $ 657 $ 481

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2019
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share Computation of Diluted EPS Three Months Ended June 30 2019 2018 (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 $ 3,125 4,547 $ 0.69 $ 3,216 4,598 $ 0.70 Effect of dilutive securities: Assumed exercise or issuance of shares relating to stock plans 60 45 Diluted EPS attributable to Comcast Corporation shareholders $ 3,125 4,607 $ 0.68 $ 3,216 4,643 $ 0.69 Six Months Ended June 30 2019 2018 (in millions, except per share data) Net Income Shares Per Share Net Income Shares Per Share Basic EPS attributable to Comcast Corporation shareholders $ 6,678 4,540 $ 1.47 $ 6,334 4,616 $ 1.37 Effect of dilutive securities: Assumed exercise or issuance of shares relating to stock plans 60 58 Diluted EPS attributable to Comcast Corporation shareholders $ 6,678 4,600 $ 1.45 $ 6,334 4,674 $ 1.36 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”). Diluted EPS excludes the impact of potential common shares related to our stock options in periods in which the combination of the option exercise price and the associated unrecognized compensation expense is greater than the average market price of our common stock. 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 six months ended June 30, 2019 or 2018 .

Long-Term Debt

Long-Term Debt	6 Months Ended
	Jun. 30, 2019
Debt Instrument [Line Items]
Long-Term Debt	Long-Term Debt As of June 30, 2019 , our debt had a carrying value of $107.6 billion and an estimated fair value of $118.5 billion . The estimated fair value of our publicly traded debt was 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 was based on Level 2 inputs that use interest rates available to us for debt with similar terms and remaining maturities. Debt Borrowings and Repayments For the six months ended June 30, 2019 , we had borrowings of $363 million related to the Universal Beijing Resort term loans. For the six months ended June 30, 2019 , we made repayments of $4.2 billion primarily related to our dollar-denominated term loan due 2022, NBCUniversal Enterprise senior notes due 2019 and our British pound-denominated term loan due 2023. Revolving Credit Facilities For the six months ended June 30, 2019 , we made net repayments of $615 million under Sky’s £1 billion revolving credit facility due 2021, which was terminated in February 2019. In June 2019, we amended the terms of our Comcast and NBCUniversal Enterprise revolving credit facilities to extend both facilities’ expiration dates from May 26, 2021 to May 26, 2022. As of June 30, 2019 , there were no amounts outstanding under our revolving credit facilities. Amounts available under our revolving credit facilities, net of amounts outstanding under our commercial paper programs and outstanding letters of credit and bank guarantees, totaled $8.7 billion . Commercial Paper Programs For the six months ended June 30, 2019 , we made net repayments of $186 million under our commercial paper programs. As of June 30, 2019 , Comcast had $488 million face amount of commercial paper outstanding. As of June 30, 2019 , NBCUniversal Enterprise had no commercial paper outstanding. Guarantee Structure Comcast, Comcast Cable and NBCUniversal have fully and unconditionally guaranteed each other’s debt securities, including the Comcast revolving credit facility. As of June 30, 2019 , the principal amount of debt securities outstanding within the cross-guarantee structure totaled $92.1 billion . Comcast and Comcast Cable fully and unconditionally guarantee NBCUniversal Enterprise’s debt securities, including its revolving credit facility. As of June 30, 2019 , the principal amount of debt securities guaranteed by Comcast and Comcast Cable totaled $1.5 billion . NBCUniversal does not guarantee the NBCUniversal Enterprise senior notes, revolving credit facility or commercial paper program. Comcast provides an unconditional guarantee of the Universal Studios Japan yen-denominated ¥382 billion (approximately $3.5 billion using exchange rates as of June 30, 2019 ) term loans with a final maturity of March 2022. None of Comcast, Comcast Cable nor NBCUniversal guarantee the ¥6.4 billion RMB (approximately $936 million using exchange rates as of June 30, 2019 ) principal amount of Universal Beijing Resort term loans outstanding. In May 2019, Comcast provided a full and unconditional guarantee of Sky’s debt (approximately $10.0 billion using exchange rates as of June 30, 2019 ) in connection with Sky’s noteholders consenting to (i) the transfer of the listing of three series of notes from the Main Market of the London Stock Exchange to the Professional Securities Market of the London Stock Exchange and (ii) amending certain terms of the Sky notes.
NBCUniversal Media LLC [Member]
Debt Instrument [Line Items]
Long-Term Debt	Long-Term Debt As of June 30, 2019 , our debt, excluding our revolving credit agreement with Comcast, had a carrying value of $13.4 billion and an estimated fair value of $14.2 billion . The estimated fair value of our publicly traded debt was 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 was based on Level 2 inputs that use interest rates available to us for debt with similar terms and remaining maturities. Debt Borrowings and Repayments For the six months ended June 30, 2019 , Universal Beijing Resort borrowed $363 million under its debt financing agreement to fund the construction of a Universal theme park and resort in Beijing, China (see Note 5). For the six months ended June 30, 2019 , we repaid $73 million of Universal Studios Japan term loans maturing 2022. 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 $7.6 billion Comcast revolving credit facility due 2022. As of June 30, 2019 , $84.4 billion principal amount of outstanding debt securities of Comcast and CCCL Parent were subject to the cross-guarantee structure. We do not, however, guarantee the obligations of NBCUniversal Enterprise with respect to its $1.5 billion outstanding debt securities, including its revolving credit facility, nor its $725 million liquidation preference of Series A cumulative preferred stock. The Universal Studios Japan term loans are not subject to the cross-guarantee structure, however they have a separate guarantee from Comcast. The Universal Beijing Resort term loans are not guaranteed.

Significant Transactions

Significant Transactions	6 Months Ended
	Jun. 30, 2019
Business Acquisition [Line Items]
Significant Transactions	Significant Transactions Sky Transaction On October 9, 2018, in connection with our offer to acquire the share capital of Sky, we acquired a controlling interest in Sky through a series of purchases of Sky shares at our offer price of £17.28 per share. In the fourth quarter of 2018, we acquired the remaining Sky shares and now own 100% of Sky’s equity interests. Total cash consideration was £30.2 billion (approximately $39.4 billion using the exchange rates on the purchase dates). We financed the acquisition through a combination of new fixed and floating rate notes, issuance of term loans and cash on hand. Sky is one of Europe’s leading entertainment companies, which primarily includes a direct-to-consumer business, providing video, high-speed internet, voice and wireless phone services, and a content business, operating entertainment networks, the Sky News broadcast network and Sky Sports networks. Allocation of Purchase Price We have applied acquisition accounting to Sky. Sky’s results of operations are included in our consolidated results of operations since the acquisition date and are reported in our Sky segment. The net assets of Sky were recorded at their estimated fair value using primarily Level 3 inputs. In valuing acquired assets and liabilities, fair value estimates are based on, but are not limited to, future expected cash flows, market rate assumptions for contractual obligations and appropriate discount rates. During the first quarter of 2019, we revised our estimates of fair value, primarily related to intangible assets, property and equipment, and investments (included below in other noncurrent assets and (liabilities), net), and recorded corresponding updates to deferred taxes. We also recorded an additional valuation allowance of approximately $1.2 billion associated with our assessment of the realization of Sky’s deferred tax assets, primarily related to net operating losses. These changes resulted in an increase in goodwill of approximately $1.4 billion and an adjustment in the first quarter of 2019 related to the fourth quarter of 2018 that resulted in an increase to depreciation and amortization expense of $53 million . The table below presents the allocation of the all-cash purchase price of £30.2 billion , or $39.4 billion , to the assets and liabilities of Sky as a result of the transaction. Allocation of Purchase Price (in millions) Consideration transferred $ 39,387 Allocation of purchase price Cash $ 1,283 Accounts receivable and other current assets 2,359 Film and television costs 2,512 Property and equipment 4,127 Intangible assets 19,539 Accounts payable, accrued liabilities and other current liabilities (5,885 ) Long-term debt (11,468 ) Deferred tax assets (liabilities), net (2,974 ) Other noncurrent assets and (liabilities), net (1,398 ) Fair value of identifiable net assets acquired 8,095 Goodwill $ 31,292 Property and Equipment Property and equipment includes customer premise equipment with a carrying value of $1.4 billion , which have original estimated useful lives of 5 to 7 years . The remaining property and equipment consists of real estate and improvements, network assets and other equipment. Intangible Assets Finite-lived intangible assets primarily consist of customer relationships with a carrying amount of $9.5 billion and developed technology and software with a carrying amount of $4.3 billion , with original estimated useful lives between 6 and 19 years and 4 and 9 years , respectively. Indefinite-lived assets consist of trade names with a carrying amount of $5.8 billion . Goodwill Goodwill consists primarily of intangible assets that do not qualify for separate recognition, including increased footprint, assembled workforce, noncontractual relationships and agreements. The acquired goodwill is not expected to be deductible for tax purposes. Acquisition-Related Costs As a result of the Sky transaction, we incurred incremental expenses in 2018 related to legal, accounting, valuation and other professional services, which are reflected in other operating and administrative expenses. We also incurred certain financing costs associated with our borrowings, which are reflected in interest expense. The table below presents the amounts related to these expenses included in our condensed consolidated statement of income. (in millions) Three Months Ended Six Months Ended Other operating and administrative expenses $ 11 $ 21 Interest expense $ 11 $ 11 Unaudited Pro Forma Information The following unaudited pro forma information has been presented as if the Sky transaction occurred on January 1, 2017. This information is based on historical results of operations, adjusted for allocation of purchase price and other acquisition accounting adjustments, and is not necessarily indicative of what the results would have been had we operated the business since January 1, 2017. For pro forma purposes, 2018 earnings were adjusted to exclude the acquisition-related costs. No pro forma adjustments have been made for cost savings or synergies that have been or may be achieved by the combined businesses. (in millions, except per share data) Three Months Ended Six Months Ended Revenue $ 26,653 $ 54,415 Net income attributable to Comcast Corporation $ 2,957 $ 5,940 Basic earnings per common share attributable to Comcast Corporation shareholders $ 0.65 $ 1.29 Diluted earnings per common share attributable to Comcast Corporation shareholders $ 0.64 $ 1.27 Universal Beijing Resort We entered into an agreement with a consortium of Chinese state-owned companies to build and operate a Universal theme park and resort in Beijing, China (“Universal Beijing Resort”). We own a 30% interest in Universal Beijing Resort and the construction is being funded through a combination of debt financing and equity contributions from the investors in accordance with their equity interests. The debt financing, which is being provided by a syndicate of Chinese financial institutions, contains certain financial and operating covenants and a maximum borrowing limit of ¥ 26.6 billion RMB (approximately $4 billion ). The debt financing is secured by the assets of Universal Beijing Resort and the equity interests of the investors. As of June 30, 2019 , Universal Beijing Resort had $936 million principal amount of term loans outstanding under the debt financing agreements. We have concluded that Universal Beijing Resort is a variable interest entity based on its governance structure, and we consolidate it because 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 Beijing Resort, and therefore our maximum risk of financial loss is our 30% interest. Universal Beijing Resort’s results of operations are reported in our Theme Parks segment. Our condensed consolidated statement of cash flows includes the costs of construction and related borrowings in the “construction of Universal Beijing Resort” and “proceeds from borrowings” captions, respectively, and equity contributions from our investing partner are included in other financing activities. In March 2018, Universal Beijing Resort received initial equity investments through a combination of cash and noncash contributions from the investors. As of June 30, 2019 , our condensed consolidated balance sheet included assets, primarily property and equipment, and liabilities, including the term loans, of Universal Beijing Resort totaling $2.1 billion and $1.5 billion , respectively.
NBCUniversal Media LLC [Member]
Business Acquisition [Line Items]
Significant Transactions	Significant Transactions Universal Beijing Resort We entered into an agreement with a consortium of Chinese state-owned companies to build and operate a Universal theme park and resort in Beijing, China (“Universal Beijing Resort”). We own a 30% interest in Universal Beijing Resort and the construction is being funded through a combination of debt financing and equity contributions from the investors in accordance with their equity interests. The debt financing, which is being provided by a syndicate of Chinese financial institutions, contains certain financial and operating covenants and a maximum borrowing limit of ¥ 26.6 billion RMB (approximately $4 billion ). The debt financing is secured by the assets of Universal Beijing Resort and the equity interests of the investors. As of June 30, 2019 , Universal Beijing Resort had $936 million principal amount of term loans outstanding under the debt financing agreements. We have concluded that Universal Beijing Resort is a variable interest entity based on its governance structure, and we consolidate it because 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 Beijing Resort, and therefore our maximum risk of financial loss is our 30% interest. Universal Beijing Resort’s results of operations are reported in our Theme Parks segment. Our condensed consolidated statement of cash flows includes the costs of construction and related borrowings in the “construction of Universal Beijing Resort” and “proceeds from borrowings” captions, respectively, and equity contributions from our investing partner are included in other financing activities. In March 2018, Universal Beijing Resort received initial equity investments through a combination of cash and noncash contributions from the investors. As of June 30, 2019 , our condensed consolidated balance sheet included assets, primarily property and equipment, and liabilities, including the term loans, of Universal Beijing Resort totaling $2.1 billion and $1.5 billion

Recent Accounting Pronouncement

Recent Accounting Pronouncements	6 Months Ended
	Jun. 30, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Recent Accounting Pronouncements	Recent Accounting Pronouncements Leases In February 2016, the Financial Accounting Standards Board (“FASB”) updated the accounting guidance related to leases. The most significant change in the updated accounting guidance requires lessees to recognize lease assets and liabilities on the balance sheet for all operating leases with the exception of short-term leases. The standard also expands the disclosures regarding the amount, timing and uncertainty of cash flows arising from leases. For a lessee, the recognition, measurement and presentation of expenses and cash flows arising from a lease did not significantly change from previous guidance. We adopted the updated guidance on January 1, 2019 on a prospective basis and as a result, prior period amounts were not adjusted to reflect the impacts of the updated guidance. In addition, as permitted under the transition guidance within the new standard, prior scoping and classification conclusions were carried forward for leases existing as of the adoption date. Upon adoption, we recorded $4.2 billion and $4.8 billion for operating lease assets and liabilities, respectively, which includes the impact of fair value adjustments, prepaid and deferred rent and lease incentives. The adoption of the updated accounting guidance did not significantly impact our recognition of finance leases, which were previously described as capital leases. As of the date of adoption, our liabilities for finance leases were $787 million , including $229 million of additional contracts determined to be leases in connection with the Sky transaction , which were recorded in long-term debt, and the related assets were recorded in property and equipment, net. Our finance leases were not considered material for further disclosure. The adoption of the new accounting guidance did not have a material impact on our consolidated results of operations or cash flows. See Note 11 for further information. Film and Television Costs In March 2019, the FASB updated the accounting guidance related to film and television costs. The updated guidance aligns the accounting for production costs of episodic television series with those of films, allowing for costs to be capitalized in excess of amounts of revenue contracted for each episode. The updated guidance also updates certain presentation and disclosure requirements for capitalized film and television costs, and requires impairment testing to be performed at a group level for capitalized film and television costs when the content is predominantly monetized with other owned or licensed content. The updated guidance is effective for us as of January 1, 2020 and early adoption is permitted. We are currently in the process of determining the impact that the updated accounting guidance will have on our consolidated financial statements, however we do not expect there to be a material impact on our consolidated results of operations or cash flows.
NBCUniversal Media LLC [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Recent Accounting Pronouncements	Recent Accounting Pronouncements Leases In February 2016, the Financial Accounting Standards Board (“FASB”) updated the accounting guidance related to leases. The most significant change in the updated accounting guidance requires lessees to recognize lease assets and liabilities on the balance sheet for all operating leases with the exception of short-term leases. The standard also expands the disclosures regarding the amount, timing and uncertainty of cash flows arising from leases. For a lessee, the recognition, measurement and presentation of expenses and cash flows arising from a lease did not significantly change from previous guidance. We adopted the updated guidance on January 1, 2019 on a prospective basis and as a result, prior period amounts were not adjusted to reflect the impacts of the updated guidance. In addition, as permitted under the transition guidance within the new standard, prior scoping and classification conclusions were carried forward for leases existing as of the adoption date. Upon adoption, we recorded approximately $1.7 billion and $1.8 billion of operating lease assets and liabilities, respectively, which includes the impact of fair value adjustments, prepaid rent and lease incentives. The adoption of the updated accounting guidance did not impact our recognition of finance leases, which were previously described as capital leases. As of the date of adoption, our liabilities for finance leases were $332 million , which were recorded in long-term debt, and the related assets were recorded in property and equipment, net. Our finance leases were not considered material for further disclosure. The adoption of the new accounting guidance did not have a material impact on our consolidated results of operations or cash flows. See Note 9 for further information. Film and Television Costs In March 2019, the FASB updated the accounting guidance related to film and television costs. The updated guidance aligns the accounting for production costs of episodic television series with those of films, allowing for costs to be capitalized in excess of amounts of revenue contracted for each episode. The updated guidance also updates certain presentation and disclosure requirements for capitalized film and television costs, and requires impairment testing to be performed at a group level for capitalized film and television costs when the content is predominantly monetized with other owned or licensed content. The updated guidance is effective for us as of January 1, 2020 and early adoption is permitted. We are currently in the process of determining the impact that the updated accounting guidance will have on our consolidated financial statements, however we do not expect there to be a material impact on our consolidated results of operations or cash flows.

Film and Television Costs

Film and Television Costs	6 Months Ended
	Jun. 30, 2019
Film And Television Costs [Line Items]
Film And Television Costs	Film and Television Costs (in millions) June 30, December 31, Film Costs: Released, less amortization $ 1,577 $ 1,600 Completed, not released 86 144 In production and in development 1,376 1,063 3,039 2,807 Television Costs: Released, less amortization 2,278 2,289 In production and in development 1,014 953 3,292 3,242 Programming rights, less amortization 4,169 5,534 10,500 11,583 Less: Current portion of programming rights 1,947 3,746 Film and television costs $ 8,553 $ 7,837
NBCUniversal Media LLC [Member]
Film And Television Costs [Line Items]
Film And Television Costs	Film and Television Costs (in millions) June 30, December 31, Film Costs: Released, less amortization $ 1,558 $ 1,600 Completed, not released 86 144 In production and in development 1,376 1,063 3,020 2,807 Television Costs: Released, less amortization 2,165 2,161 In production and in development 1,014 953 3,179 3,114 Programming rights, less amortization 2,553 2,694 8,752 8,615 Less: Current portion of programming rights 1,156 1,323 Film and television costs $ 7,596 $ 7,292

Investments

Investments	6 Months Ended
	Jun. 30, 2019
Investments [Line Items]
Investments	Investments Investment and Other Income (Loss), Net Three Months Ended Six Months Ended (in millions) 2019 2018 2019 2018 Equity in net income (losses) of investees, net $ (202 ) $ 69 $ 60 $ 20 Realized and unrealized gains (losses) on equity securities, net 194 (40 ) 408 (12 ) Other income (loss), net (47 ) 48 153 195 Investment and other income (loss), net $ (55 ) $ 77 $ 621 $ 203 (in millions) June 30, December 31, Equity method $ 5,719 $ 4,035 Marketable equity securities 577 341 Nonmarketable equity securities 2,057 1,805 Other investments 1,803 1,796 Total investments 10,156 7,977 Less: Current investments 1,718 94 Noncurrent investments $ 8,438 $ 7,883 Equity Method Atairos Atairos follows investment company accounting and records its investments at their fair values each reporting period with the net gains or losses reflected in its statement of operations. We recognize our share of these gains and losses in equity in net income (losses) of investees, net. For the three and six months ended June 30, 2019 , we recognized losses of $106 million and income of $268 million , respectively. For the three and six months ended June 30, 2018 , we recognized income of $151 million and $186 million , respectively. For the six months ended June 30, 2019 and 2018 , we made cash capital contributions totaling $463 million and $112 million , respectively. As of June 30, 2019 and December 31, 2018 , our investment was $3.4 billion and $2.7 billion , respectively. In April 2018, we sold a controlling interest in our arena management-related businesses to Atairos and received as consideration additional equity interests in Atairos. We account for our retained ownership in the businesses as an equity method investment. In connection with the sale of the businesses, we recognized a pretax gain of $200 million in other operating gains in the second quarter of 2018. Hulu In May 2019, we entered into a series of agreements (the “Hulu Transaction”) with The Walt Disney Company (“Disney”), whereby we relinquished our board seats and substantially all voting rights associated with our investment in Hulu, LLC ("Hulu"), and Disney assumed full operational control. We also acquired our proportionate share of the approximate 10% interest in Hulu previously held by AT&T Inc. (“AT&T”) for approximately $477 million , increasing our ownership interest to approximately 33% from approximately 30% . Following the Hulu Transaction, future capital calls are limited to $1.5 billion in the aggregate each year, with any excess funding requirements funded with member loans. We have the right, but not the obligation, to fund our proportionate share of these capital calls, and if we elect not to fund our share of future equity capital calls, our ownership interest will be diluted, subject to an ownership floor of 21% . The Hulu Transaction agreements include put and call provisions regarding our ownership interest in Hulu, pursuant to which, as early as January 2024, we can require Disney to buy, and Disney can require us to sell our interest, in either case, for fair value at that future time subject to a minimum equity value of $27.5 billion for 100% of the equity of Hulu. The minimum total equity value and ownership floor guarantee minimum proceeds of approximately $5.8 billion upon exercise of the put or call. In connection with the Hulu Transaction, we agreed to extend certain Hulu licenses of NBCUniversal content until late 2024. We can terminate most of our content license agreements with Hulu in three years’ time, and in one year’s time we have the right to exhibit certain content that we currently license exclusively to Hulu on our platforms in return for reducing the license fee payable by Hulu. We account for our investment using the equity method. For the three and six months ended June 30, 2019 , we recognized losses of $109 million and $250 million , respectively, in equity in net income (losses) of investees, net. For the three and six months ended June 30, 2018 , we recognized losses of $107 million and $238 million , respectively. For the six months ended June 30, 2019 and 2018 , we made cash capital contributions totaling $903 million , inclusive of the funding for the acquisition of the AT&T interest, and $227 million , respectively. As of June 30, 2019 and December 31, 2018 , our investment was $857 million and $248 million , respectively. In August 2016, Time Warner Inc., which was acquired by AT&T in 2018, acquired a 10% interest in Hulu, diluting our interest at that time from approximately 33% to approximately 30% . Given the contingent nature of the put and call options related to that interest, we recorded a deferred gain as a result of the dilution. In the first quarter of 2019, the put and call options expired unexercised and we recognized the previously deferred gain of $159 million in other income (loss), net. The Weather Channel In March 2018, we sold our investment in The Weather Channel cable network and recognized a pretax gain of $64 million in other income (loss), net. Marketable Equity Securities Snap For the three and six months ended June 30, 2019 , we recognized unrealized gains of $96 million and $258 million , respectively, in realized and unrealized gains (losses) on equity securities, net related to our investment in Snap. For the three and six months ended June 30, 2018 , we recognized unrealized losses of $82 million and $45 million , respectively, related to our investment in Snap. As of June 30, 2019 and December 31, 2018 , our investment in Snap was $420 million and $162 million , respectively. Other Investments 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 both June 30, 2019 and December 31, 2018 , our investment in AirTouch was $1.6 billion . We account for our investment in AirTouch as a held to maturity investment using the cost method. As of June 30, 2019 , 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 [Line Items]
Investments	Investments Investment and Other Income (Loss), Net Three Months Ended Six Months Ended (in millions) 2019 2018 2019 2018 Equity in net income (losses) of investees, net $ (91 ) $ (87 ) $ (211 ) $ (187 ) Realized and unrealized gains (losses) on equity securities, net 97 (74 ) 258 (37 ) Other income (loss), net 34 (7 ) 233 52 Investment and other income (loss), net $ 40 $ (168 ) $ 280 $ (172 ) (in millions) June 30, December 31, Equity method $ 1,342 $ 707 Marketable equity securities 420 162 Nonmarketable equity securities 916 811 Total investments $ 2,678 $ 1,680 Equity Method Hulu In May 2019, we entered into a series of agreements (the “Hulu Transaction”) with The Walt Disney Company (“Disney”), whereby we relinquished our board seats and substantially all voting rights associated with our investment in Hulu, LLC ("Hulu"), and Disney assumed full operational control. We also acquired our proportionate share of the approximate 10% interest in Hulu previously held by AT&T Inc. (“AT&T”) for approximately $477 million , increasing our ownership interest to approximately 33% from approximately 30% . Following the Hulu Transaction, future capital calls are limited to $1.5 billion in the aggregate each year, with any excess funding requirements funded with member loans. We have the right, but not the obligation, to fund our proportionate share of these capital calls, and if we elect not to fund our share of future equity capital calls, our ownership interest will be diluted, subject to an ownership floor of 21% . The Hulu Transaction agreements include put and call provisions regarding our ownership interest in Hulu, pursuant to which, as early as January 2024, we can require Disney to buy, and Disney can require us to sell our interest, in either case, for fair value at that future time subject to a minimum equity value of $27.5 billion for 100% of the equity of Hulu. The minimum total equity value and ownership floor guarantee minimum proceeds of approximately $5.8 billion upon exercise of the put or call. In connection with the Hulu Transaction, we agreed to extend certain Hulu licenses of NBCUniversal content until late 2024. We can terminate most of our content license agreements with Hulu in three years’ time, and in one year’s time we have the right to exhibit certain content that we currently license exclusively to Hulu on our platforms in return for reducing the license fee payable by Hulu. We account for our investment using the equity method. For the three and six months ended June 30, 2019 , we recognized losses of $109 million and $250 million , respectively, in equity in net income (losses) of investees, net. For the three and six months ended June 30, 2018 , we recognized losses of $107 million and $238 million , respectively. For the six months ended June 30, 2019 and 2018 , we made cash capital contributions totaling $903 million , inclusive of the funding for the acquisition of the AT&T interest, and $227 million , respectively. As of June 30, 2019 and December 31, 2018 , our investment was $857 million and $248 million , respectively. In August 2016, Time Warner Inc., which was acquired by AT&T in 2018, acquired a 10% interest in Hulu, diluting our interest at that time from approximately 33% to approximately 30% . Given the contingent nature of the put and call options related to that interest, we recorded a deferred gain as a result of the dilution. In the first quarter of 2019, the put and call options expired unexercised and we recognized the previously deferred gain of $159 million in other income (loss), net. The Weather Channel In March 2018, we sold our investment in The Weather Channel cable network and recognized a pretax gain of $64 million in other income (loss), net. Marketable Equity Securities Snap For the three and six months ended June 30, 2019 , we recognized unrealized gains of $96 million and $258 million , respectively, in realized and unrealized gains (losses) on equity securities, net related to our investment in Snap. For the three and six months ended June 30, 2018 , we recognized unrealized losses of $82 million and $45 million , respectively, related to our investment in Snap. As of June 30, 2019 and December 31, 2018 , our investment in Snap was $420 million and $162 million , respectively.

Supplemental Financial Informat

Supplemental Financial Information	6 Months Ended
	Jun. 30, 2019
Supplemental Financial Information [Line Items]
Supplemental Financial Information	Supplemental Financial Information Share-Based Compensation Our share-based compensation plans consist primarily 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 our common stock at a discount through payroll deductions. In March 2019 , we granted 12.4 million RSUs and 41.9 million stock options related to our annual management awards. The weighted-average fair values associated with these grants were $39.88 per RSU and $7.91 per stock option. Recognized Share-Based Compensation Expense Three Months Ended Six Months Ended (in millions) 2019 2018 2019 2018 Restricted share units $ 167 $ 102 $ 294 $ 185 Stock options 72 61 119 105 Employee stock purchase plans 6 5 15 17 Total $ 245 $ 168 $ 428 $ 307 As of June 30, 2019 , we had unrecognized pretax compensation expense of $1.4 billion and $594 million related to nonvested RSUs and nonvested stock options, respectively. Cash Payments for Interest and Income Taxes Six Months Ended (in millions) 2019 2018 Interest $ 2,111 $ 1,354 Income taxes $ 1,634 $ 623 Noncash Activities During the six months ended June 30, 2019 : • we acquired $1.6 billion of property and equipment and intangible assets that were accrued but unpaid • we recorded a liability of $955 million for a quarterly cash dividend of $0.21 per common share to be paid in July 2019 Cash, Cash Equivalents and Restricted Cash The following table provides a reconciliation of cash, cash equivalents and restricted cash reported in the condensed consolidated balance sheet to the total of the amounts reported in our condensed consolidated statement of cash flows. (in millions) June 30, December 31, Cash and cash equivalents $ 3,919 $ 3,814 Restricted cash included in other current assets 79 46 Restricted cash included in other noncurrent assets, net 21 49 Cash, cash equivalents and restricted cash, end of period $ 4,019 $ 3,909 Accumulated Other Comprehensive Income (Loss) (in millions) June 30, June 30, Unrealized gains (losses) on marketable securities $ 5 $ — Deferred gains (losses) on cash flow hedges 132 26 Unrecognized gains (losses) on employee benefit obligations 309 302 Cumulative translation adjustments (508 ) 133 Accumulated other comprehensive income (loss), net of deferred taxes $ (62 ) $ 461
NBCUniversal Media LLC [Member]
Supplemental Financial Information [Line Items]
Supplemental Financial Information	Supplemental Financial Information Leases Our leases consist primarily of real estate and equipment. We determine if an arrangement is a lease at inception. Lease assets and liabilities are recognized upon commencement of the lease based on the present value of the future minimum lease payments over the lease term. The lease term includes options to extend the lease when it is reasonably certain that we will exercise that option. We generally utilize our incremental borrowing rate based on information available at the commencement of the lease in determining the present value of future payments. The lease asset also includes any lease payments made and initial direct costs incurred and excludes lease incentives. Lease assets and liabilities are not recorded for leases with an initial term of one year or less. Lease expense for operating leases recorded in the balance sheet is included in operating costs and expenses and is based on the future minimum lease payments recognized on a straight-line basis over the term of the lease plus any variable lease costs. Operating lease expenses, inclusive of short-term and variable lease expenses, recognized in our condensed consolidated statement of income for the three and six months ended June 30, 2019 were $110 million and $221 million , respectively. These amounts do not include lease costs associated with production activities or other amounts capitalized in our condensed consolidated balance sheet, which are not material. The table below summarizes the operating lease assets and liabilities recorded in our condensed consolidated balance sheet. Condensed Consolidated Balance Sheet (in millions) June 30, Other noncurrent assets, net $ 1,591 Accrued expenses and other current liabilities $ 166 Other noncurrent liabilities $ 1,535 The table below summarizes our future minimum rental commitments for operating leases as of June 30, 2019 applying the new accounting guidance. (in millions) June 30, Remaining six months of 2019 $ 117 2020 250 2021 217 2022 179 2023 154 Thereafter 1,452 Total future minimum lease payments 2,369 Less: imputed interest 668 Total liability $ 1,701 The weighted average remaining lease term for operating leases and the weighted average discount rate used to calculate our operating lease liabilities as of June 30, 2019 were 15 years and 4.11% , respectively. For the six months ended June 30, 2019 , cash payments for operating leases recorded in the condensed consolidated balance sheet were $132 million . Leases that have not yet commenced and lease assets and liabilities associated with leases entered into during the period were not material. The tables below summarize our future minimum rental commitments for operating leases as of December 31, 2018 and rent expense for operating leases for the three and six months ended June 30, 2018 using the accounting guidance in effect at that time. (in millions) December 31, 2019 $ 248 2020 $ 232 2021 $ 199 2022 $ 168 2023 $ 144 Thereafter $ 1,380 (in millions) Three Months Ended Six Months Ended Rental expense $ 74 $ 143 Cash Payments for Interest and Income Taxes Six Months Ended (in millions) 2019 2018 Interest $ 217 $ 218 Income taxes $ 163 $ 225 Noncash Activities During the six months ended June 30, 2019 , we acquired $696 million of property and equipment and intangible assets that were accrued but unpaid. Cash, Cash Equivalents and Restricted Cash The following table provides a reconciliation of cash, cash equivalents and restricted cash reported in the condensed consolidated balance sheet to the total of the amounts reported in our condensed consolidated statement of cash flows. (in millions) June 30, December 31, Cash and cash equivalents $ 1,244 $ 1,444 Restricted cash included in other noncurrent assets, net 20 20 Cash, cash equivalents and restricted cash, end of period $ 1,264 $ 1,464 Accumulated Other Comprehensive Income (Loss) (in millions) June 30, June 30, Deferred gains (losses) on cash flow hedges $ 9 $ 8 Unrecognized gains (losses) on employee benefit obligations 135 119 Cumulative translation adjustments 151 91 Accumulated other comprehensive income (loss) $ 295 $ 218

Related Party Transactions

Related Party Transactions	6 Months Ended
	Jun. 30, 2019
NBCUniversal Media LLC [Member]
Related Party Transaction [Line Items]
Related Party Transactions	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. Comcast is also the counterparty to one of our contractual obligations. As of June 30, 2019 , 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 Statement of Income Three Months Ended Six Months Ended (in millions) 2019 2018 2019 2018 Transactions with Comcast and Consolidated Subsidiaries Revenue $ 607 $ 480 $ 1,211 $ 1,074 Total costs and expenses $ (60 ) $ (42 ) $ (125 ) $ (103 ) Interest expense and investment and other income (loss), net $ 6 $ (20 ) $ 14 $ (43 ) Condensed Consolidated Balance Sheet (in millions) June 30, December 31, Transactions with Comcast and Consolidated Subsidiaries Receivables, net $ 484 $ 464 Note receivable from Comcast $ 2,534 $ 2,054 Film and television costs $ 27 $ 27 Other noncurrent assets, net $ 70 $ — Accounts payable and accrued expenses related to trade creditors $ 64 $ 78 Accrued expenses and other current liabilities $ 42 $ 32 Note payable to Comcast $ 197 $ 54 Long-term debt $ 768 $ 701 Other noncurrent liabilities $ 494 $ 410 Share-Based Compensation Comcast maintains share-based compensation plans that consist primarily 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 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. For the three months ended June 30, 2019 and 2018 , we recognized share-based compensation expense of $57 million and $46 million , respectively. For the six months ended June 30, 2019 and 2018 , we recognized share-based compensation expense of $96 million and $78 million

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Leases Our leases consist primarily of real estate, vehicles and other equipment. We determine if an arrangement is a lease at inception. Lease assets and liabilities are recognized upon commencement of the lease based on the present value of the future minimum lease payments over the lease term. The lease term includes options to extend the lease when it is reasonably certain that we will exercise that option. We generally utilize our incremental borrowing rate based on information available at the commencement of the lease in determining the present value of future payments. The lease asset also includes any lease payments made and initial direct costs incurred and excludes lease incentives. Lease assets and liabilities are not recorded for leases with an initial term of one year or less. Lease expense for operating leases recorded in the balance sheet is included in operating costs and expenses and is based on the future minimum lease payments recognized on a straight-line basis over the term of the lease plus any variable lease costs. Operating lease expenses, inclusive of short-term and variable lease expenses, recognized in our condensed consolidated statement of income for the three and six months ended June 30, 2019 were $264 million and $538 million , respectively. These amounts do not include lease costs associated with production activities or other amounts capitalized in our condensed consolidated balance sheet, which are not material. The table below summarizes the operating lease assets and liabilities recorded in our condensed consolidated balance sheet. Condensed Consolidated Balance Sheet (in millions) June 30, Other noncurrent assets, net $ 4,063 Accrued expenses and other current liabilities $ 685 Other noncurrent liabilities $ 3,976 The table below summarizes our future minimum rental commitments for operating leases as of June 30, 2019 applying the new accounting guidance. (in millions) June 30, Remaining six months of 2019 $ 431 2020 856 2021 743 2022 609 2023 514 Thereafter 2,591 Total future minimum lease payments 5,744 Less: imputed interest 1,083 Total liability $ 4,661 The weighted average remaining lease term for operating leases and the weighted average discount rate used to calculate our operating lease liabilities as of June 30, 2019 were 10 years and 3.85% , respectively. For the six months ended June 30, 2019 , cash payments for operating leases recorded in the condensed consolidated balance sheet were $446 million . Leases that have not yet commenced and lease assets and liabilities associated with leases entered into during the period were not material. The tables below summarize our future minimum rental commitments for operating leases as of December 31, 2018 and rent expense for operating leases for the three and six months ended June 30, 2018 using the accounting guidance in effect at that time. These amounts have been updated to include $804 million of future cash payments related to additional contracts determined to be operating leases in connection with the Sky transaction. (in millions) December 31, 2019 $ 891 2020 $ 824 2021 $ 722 2022 $ 592 2023 $ 513 Thereafter $ 2,608 (in millions) Three Months Ended Six Months Ended Rental expense $ 184 $ 370 Redeemable Subsidiary Preferred Stock As of June 30, 2019 , the fair value of the NBCUniversal Enterprise redeemable subsidiary preferred stock was $744 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. Contingencies We are a defendant in several 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. In addition, we are 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.

Condensed Consolidating Financi

Condensed Consolidating Financial Information	6 Months Ended
	Jun. 30, 2019
Condensed Financial Information Disclosure [Abstract]
Condensed Consolidating Financial Information	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. See Note 5 for additional information on the cross-guarantee structure. Condensed Consolidating Statement of Income For the Three Months Ended June 30, 2019 (in millions) Comcast Comcast CCCL NBCUniversal Non- Elimination Consolidated Revenue: Service revenue $ — $ — $ — $ — $ 26,858 $ — $ 26,858 Management fee revenue 309 — 303 — — (612 ) — Total revenue 309 — 303 — 26,858 (612 ) 26,858 Costs and Expenses: Programming and production — — — — 8,255 — 8,255 Other operating and administrative 178 — 303 225 7,992 (612 ) 8,086 Advertising, marketing and promotion — — — — 1,885 — 1,885 Depreciation 16 — — — 2,181 — 2,197 Amortization 2 — — — 1,077 — 1,079 Total costs and expenses 196 — 303 225 21,390 (612 ) 21,502 Operating income (loss) 113 — — (225 ) 5,468 — 5,356 Interest expense (877 ) (3 ) (47 ) (117 ) (93 ) — (1,137 ) Investment and other income (loss), net 3,692 3,730 3,376 1,918 1,659 (14,430 ) (55 ) Income (loss) before income taxes 2,928 3,727 3,329 1,576 7,034 (14,430 ) 4,164 Income tax (expense) benefit 197 (1 ) 10 (5 ) (1,162 ) — (961 ) Net income (loss) 3,125 3,726 3,339 1,571 5,872 (14,430 ) 3,203 Less: Net income (loss) attributable to noncontrolling interests and redeemable subsidiary preferred stock — — — — 78 — 78 Net income (loss) attributable to Comcast Corporation $ 3,125 $ 3,726 $ 3,339 $ 1,571 $ 5,794 $ (14,430 ) $ 3,125 Comprehensive income (loss) attributable to Comcast Corporation $ 2,641 $ 3,756 $ 3,342 $ 1,644 $ 5,300 $ (14,042 ) $ 2,641 Condensed Consolidating Statement of Income For the Three Months Ended June 30, 2018 (in millions) Comcast Comcast CCCL NBCUniversal Non- Elimination Consolidated Revenue: Service revenue $ — $ — $ — $ — $ 21,735 $ — $ 21,735 Management fee revenue 298 — 293 — — (591 ) — Total revenue 298 — 293 — 21,735 (591 ) 21,735 Costs and Expenses: Programming and production — — — — 6,300 — 6,300 Other operating and administrative 190 — 293 224 6,249 (591 ) 6,365 Advertising, marketing and promotion — — — — 1,653 — 1,653 Depreciation 11 — — — 2,010 — 2,021 Amortization 2 — — — 580 — 582 Other operating gains — — — — (200 ) — (200 ) Total costs and expenses 203 — 293 224 16,592 (591 ) 16,721 Operating income (loss) 95 — — (224 ) 5,143 — 5,014 Interest expense (578 ) (3 ) (48 ) (113 ) (64 ) — (806 ) Investment and other income (loss), net 3,597 3,580 2,999 1,589 1,324 (13,012 ) 77 Income (loss) before income taxes 3,114 3,577 2,951 1,252 6,403 (13,012 ) 4,285 Income tax (expense) benefit 102 1 10 (5 ) (1,185 ) — (1,077 ) Net income (loss) 3,216 3,578 2,961 1,247 5,218 (13,012 ) 3,208 Less: Net income (loss) attributable to noncontrolling interests and redeemable subsidiary preferred stock — — — — (8 ) — (8 ) Net income (loss) attributable to Comcast Corporation $ 3,216 $ 3,578 $ 2,961 $ 1,247 $ 5,226 $ (13,012 ) $ 3,216 Comprehensive income (loss) attributable to Comcast Corporation $ 3,069 $ 3,527 $ 2,960 $ 1,069 $ 4,903 $ (12,459 ) $ 3,069 Condensed Consolidating Statement of Income For the Six Months Ended June 30, 2019 (in millions) Comcast Comcast CCCL NBCUniversal Non- Elimination Consolidated Revenue: Service revenue $ — $ — $ — $ — $ 53,717 $ — $ 53,717 Management fee revenue 614 — 602 — — (1,216 ) — Total revenue 614 — 602 — 53,717 (1,216 ) 53,717 Costs and Expenses: Programming and production — — — — 16,824 — 16,824 Other operating and administrative 366 — 602 496 15,738 (1,216 ) 15,986 Advertising, marketing and promotion — — — — 3,773 — 3,773 Depreciation 30 — — — 4,407 — 4,437 Amortization 3 — — — 2,156 — 2,159 Total costs and expenses 399 — 602 496 42,898 (1,216 ) 43,179 Operating income (loss) 215 — — (496 ) 10,819 — 10,538 Interest expense (1,773 ) (6 ) (96 ) (237 ) (175 ) — (2,287 ) Investment and other income (loss), net 7,907 7,873 6,690 4,099 3,897 (29,845 ) 621 Income (loss) before income taxes 6,349 7,867 6,594 3,366 14,541 (29,845 ) 8,872 Income tax (expense) benefit 329 (7 ) 20 (11 ) (2,368 ) — (2,037 ) Net income (loss) 6,678 7,860 6,614 3,355 12,173 (29,845 ) 6,835 Less: Net income (loss) attributable to noncontrolling interests and redeemable subsidiary preferred stock — — — — 157 — 157 Net income (loss) attributable to Comcast Corporation $ 6,678 $ 7,860 $ 6,614 $ 3,355 $ 12,016 $ (29,845 ) $ 6,678 Comprehensive income (loss) attributable to Comcast Corporation $ 6,984 $ 7,878 $ 6,617 $ 3,396 $ 12,460 $ (30,351 ) $ 6,984 Condensed Consolidating Statement of Income For the Six Months Ended June 30, 2018 (in millions) Comcast Comcast CCCL NBCUniversal Non- Elimination Consolidated Revenue: Service revenue $ — $ — $ — $ — $ 44,526 $ — $ 44,526 Management fee revenue 590 — 579 — — (1,169 ) — Total revenue 590 — 579 — 44,526 (1,169 ) 44,526 Costs and Expenses: Programming and production — — — — 13,729 — 13,729 Other operating and administrative 418 — 579 542 12,509 (1,169 ) 12,879 Advertising, marketing and promotion — — — — 3,257 — 3,257 Depreciation 22 — — — 4,010 — 4,032 Amortization 3 — — — 1,167 — 1,170 Other operating gains — — — — (200 ) — (200 ) Total costs and expenses 443 — 579 542 34,472 (1,169 ) 34,867 Operating income (loss) 147 — — (542 ) 10,054 — 9,659 Interest expense (1,139 ) (6 ) (95 ) (219 ) (124 ) — (1,583 ) Investment and other income (loss), net 7,117 6,899 5,825 3,531 2,912 (26,081 ) 203 Income (loss) before income taxes 6,125 6,893 5,730 2,770 12,842 (26,081 ) 8,279 Income tax (expense) benefit 209 1 19 (10 ) (2,114 ) — (1,895 ) Net income (loss) 6,334 6,894 5,749 2,760 10,728 (26,081 ) 6,384 Less: Net income (loss) attributable to noncontrolling interests and redeemable subsidiary preferred stock — — — — 50 — 50 Net income (loss) attributable to Comcast Corporation $ 6,334 $ 6,894 $ 5,749 $ 2,760 $ 10,678 $ (26,081 ) $ 6,334 Comprehensive income (loss) attributable to Comcast Corporation $ 6,340 $ 6,896 $ 5,749 $ 2,765 $ 10,694 $ (26,104 ) $ 6,340 Condensed Consolidating Statement of Cash Flows For the Six Months Ended June 30, 2019 (in millions) Comcast Comcast CCCL NBCUniversal Non- Elimination Consolidated Net cash provided by (used in) operating activities $ (1,375 ) $ 186 $ (80 ) $ (640 ) $ 16,180 $ — $ 14,271 Investing Activities: Net transactions with affiliates 5,616 (186 ) 80 597 (6,107 ) — — Capital expenditures (9 ) — — — (4,346 ) — (4,355 ) Cash paid for intangible assets (2 ) — — — (1,076 ) — (1,078 ) Acquisitions and construction of real estate properties (32 ) — — — (4 ) — (36 ) Construction of Universal Beijing Resort — — — — (450 ) — (450 ) Acquisitions, net of cash acquired — — — — (114 ) — (114 ) Proceeds from sales of businesses and investments — — — — 150 — 150 Purchases of investments (18 ) — — (63 ) (1,524 ) — (1,605 ) Other — — — — 74 — 74 Net cash provided by (used in) investing activities 5,555 (186 ) 80 534 (13,397 ) — (7,414 ) Financing Activities: Proceeds from (repayments of) short-term borrowings, net 487 — — — (1,288 ) — (801 ) Proceeds from borrowings — — — — 363 — 363 Repurchases and repayments of debt (2,507 ) — — (7 ) (1,642 ) — (4,156 ) Repurchases of common stock under repurchase program and employee plans (350 ) — — — — — (350 ) Dividends paid (1,823 ) — — — — — (1,823 ) Distributions to noncontrolling interests and dividends for redeemable subsidiary preferred stock — — — — (155 ) — (155 ) Other 13 — — — 177 — 190 Net cash provided by (used in) financing activities (4,180 ) — — (7 ) (2,545 ) — (6,732 ) Impact of foreign currency on cash, cash equivalents and restricted cash — — — — (15 ) — (15 ) Increase (decrease) in cash, cash equivalents and restricted cash — — — (113 ) 223 — 110 Cash, cash equivalents and restricted cash, beginning of period — — — 416 3,493 — 3,909 Cash, cash equivalents and restricted cash, end of period $ — $ — $ — $ 303 $ 3,716 $ — $ 4,019 Condensed Consolidating Statement of Cash Flows For the Six Months Ended June 30, 2018 (in millions) Comcast Comcast CCCL NBCUniversal Non- Elimination Consolidated Net cash provided by (used in) operating activities $ (491 ) $ 6 $ (78 ) $ (796 ) $ 13,896 $ — $ 12,537 Investing Activities: Net transactions with affiliates 4,096 (455 ) 78 571 (4,290 ) — — Capital expenditures (10 ) — — — (4,213 ) — (4,223 ) Cash paid for intangible assets (2 ) — — — (928 ) — (930 ) Acquisitions and construction of real estate properties (76 ) — — — (28 ) — (104 ) Construction of Universal Beijing Resort — — — — (116 ) — (116 ) Acquisitions, net of cash acquired — — — — (88 ) — (88 ) Proceeds from sales of investments — — — 67 46 — 113 Purchases of investments (28 ) — — (30 ) (480 ) — (538 ) Other — 449 — — 131 — 580 Net cash provided by (used in) investing activities 3,980 (6 ) 78 608 (9,966 ) — (5,306 ) Financing Activities: Proceeds from (repayments of) short-term borrowings, net (902 ) — — — 925 — 23 Proceeds from borrowings 3,973 — — — 306 — 4,279 Repurchases and repayments of debt (1,900 ) — — (3 ) (2,444 ) — (4,347 ) Repurchases of common stock under repurchase program and employee plans (2,998 ) — — — — — (2,998 ) Dividends paid (1,616 ) — — — — — (1,616 ) Distributions to noncontrolling interests and dividends for redeemable subsidiary preferred stock — — — — (140 ) — (140 ) Other (46 ) — — — (115 ) — (161 ) Net cash provided by (used in) financing activities (3,489 ) — — (3 ) (1,468 ) — (4,960 ) Increase (decrease) in cash, cash equivalents and restricted cash — — — (191 ) 2,462 — 2,271 Cash, cash equivalents and restricted cash, beginning of period — — — 496 3,075 — 3,571 Cash, cash equivalents and restricted cash, end of period $ — $ — $ — $ 305 $ 5,537 $ — $ 5,842 Condensed Consolidating Balance Sheet June 30, 2019 (in millions) Comcast Comcast CCCL NBCUniversal Non- Elimination Consolidated Assets Cash and cash equivalents $ — $ — $ — $ 303 $ 3,616 $ — $ 3,919 Receivables, net — — — — 10,835 — 10,835 Programming rights — — — — 1,947 — 1,947 Other current assets 115 22 — 22 4,501 — 4,660 Total current assets 115 22 — 325 20,899 — 21,361 Film and television costs — — — — 8,553 — 8,553 Investments 281 12 148 898 7,099 — 8,438 Investments in and amounts due from subsidiaries eliminated upon consolidation 160,659 147,775 130,444 56,265 98,426 (593,569 ) — Property and equipment, net 668 — — — 45,379 — 46,047 Franchise rights — — — — 59,365 — 59,365 Goodwill — — — — 67,945 — 67,945 Other intangible assets, net 10 — — — 36,066 — 36,076 Other noncurrent assets, net 1,038 163 — 101 7,935 (467 ) 8,770 Total assets $ 162,771 $ 147,972 $ 130,592 $ 57,589 $ 351,667 $ (594,036 ) $ 256,555 Liabilities and Equity Accounts payable and accrued expenses related to trade creditors $ — $ — $ — $ — $ 10,014 $ — $ 10,014 Accrued participations and residuals — — — — 1,683 — 1,683 Deferred revenue — — — — 2,642 — 2,642 Accrued expenses and other current liabilities 2,403 244 356 388 6,913 — 10,304 Current portion of long-term debt 2,587 — — 2,011 1,767 — 6,365 Total current liabilities 4,990 244 356 2,399 23,019 — 31,008 Long-term debt, less current portion 77,782 152 2,100 5,751 15,463 — 101,248 Deferred income taxes — 334 — 68 28,206 (612 ) 27,996 Other noncurrent liabilities 3,149 — — 1,547 12,303 145 17,144 Redeemable noncontrolling interests and redeemable subsidiary preferred stock — — — — 1,329 — 1,329 Equity: Common stock 54 — — — — — 54 Other shareholders’ equity 76,796 147,242 128,136 47,824 270,367 (593,569 ) 76,796 Total Comcast Corporation shareholders’ equity 76,850 147,242 128,136 47,824 270,367 (593,569 ) 76,850 Noncontrolling interests — — — — 980 — 980 Total equity 76,850 147,242 128,136 47,824 271,347 (593,569 ) 77,830 Total liabilities and equity $ 162,771 $ 147,972 $ 130,592 $ 57,589 $ 351,667 $ (594,036 ) $ 256,555 Condensed Consolidating Balance Sheet December 31, 2018 (in millions) Comcast Comcast CCCL NBCUniversal Non- Elimination Consolidated Assets Cash and cash equivalents $ — $ — $ — $ 416 $ 3,398 $ — $ 3,814 Receivables, net — — — — 11,104 — 11,104 Programming rights — — — — 3,746 — 3,746 Other current assets 66 20 — 28 3,070 — 3,184 Total current assets 66 20 — 444 21,318 — 21,848 Film and television costs — — — — 7,837 — 7,837 Investments 270 11 143 790 6,669 — 7,883 Investments in and amounts due from subsidiaries eliminated upon consolidation 157,264 147,028 130,214 53,853 97,872 (586,231 ) — Property and equipment, net 670 — — — 43,767 — 44,437 Franchise rights — — — — 59,365 — 59,365 Goodwill — — — — 66,154 — 66,154 Other intangible assets, net 11 — — — 38,347 — 38,358 Other noncurrent assets, net 1,057 208 — 85 4,910 (458 ) 5,802 Total assets $ 159,338 $ 147,267 $ 130,357 $ 55,172 $ 346,239 $ (586,689 ) $ 251,684 Liabilities and Equity Accounts payable and accrued expenses related to trade creditors $ 2 $ — $ — $ — $ 8,492 $ — $ 8,494 Accrued participations and residuals — — — — 1,808 — 1,808 Deferred revenue — — — — 2,182 — 2,182 Accrued expenses and other current liabilities 2,357 150 360 282 7,572 — 10,721 Current portion of long-term debt 699 — — 4 3,695 — 4,398 Total current liabilities 3,058 150 360 286 23,749 — 27,603 Long-term debt, less current portion 81,661 146 2,100 7,748 15,690 — 107,345 Deferred income taxes — 314 — 65 27,734 (524 ) 27,589 Other noncurrent liabilities 3,006 — — 1,201 11,056 66 15,329 Redeemable noncontrolling interests and redeemable subsidiary preferred stock — — — — 1,316 — 1,316 Equity: Common stock 54 — — — — — 54 Other shareholders’ equity 71,559 146,657 127,897 45,872 265,805 (586,231 ) 71,559 Total Comcast Corporation shareholders’ equity 71,613 146,657 127,897 45,872 265,805 (586,231 ) 71,613 Noncontrolling interests — — — — 889 — 889 Total equity 71,613 146,657 127,897 45,872 266,694 (586,231 ) 72,502 Total liabilities and equity $ 159,338 $ 147,267 $ 130,357 $ 55,172 $ 346,239 $ (586,689 ) $ 251,684

Recent Accounting Pronounceme_2

Recent Accounting Pronouncements (Policies)	6 Months Ended
	Jun. 30, 2019
Accounting Policies [Line Items]
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, cash flows and financial condition 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 2018 Annual Report on Form 10-K and the notes within this Form 10-Q.
Earnings Per Share	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”). Diluted EPS excludes the impact of potential common shares related to our stock options in periods in which the combination of the option exercise price and the associated unrecognized compensation expense is greater than the average market price of our common stock.
Recent Accounting Pronouncements	In February 2016, the Financial Accounting Standards Board (“FASB”) updated the accounting guidance related to leases. The most significant change in the updated accounting guidance requires lessees to recognize lease assets and liabilities on the balance sheet for all operating leases with the exception of short-term leases. The standard also expands the disclosures regarding the amount, timing and uncertainty of cash flows arising from leases. For a lessee, the recognition, measurement and presentation of expenses and cash flows arising from a lease did not significantly change from previous guidance. We adopted the updated guidance on January 1, 2019 on a prospective basis and as a result, prior period amounts were not adjusted to reflect the impacts of the updated guidance. In addition, as permitted under the transition guidance within the new standard, prior scoping and classification conclusions were carried forward for leases existing as of the adoption date. Upon adoption, we recorded $4.2 billion and $4.8 billion for operating lease assets and liabilities, respectively, which includes the impact of fair value adjustments, prepaid and deferred rent and lease incentives. The adoption of the updated accounting guidance did not significantly impact our recognition of finance leases, which were previously described as capital leases. As of the date of adoption, our liabilities for finance leases were $787 million , including $229 million of additional contracts determined to be leases in connection with the Sky transaction , which were recorded in long-term debt, and the related assets were recorded in property and equipment, net. Our finance leases were not considered material for further disclosure. The adoption of the new accounting guidance did not have a material impact on our consolidated results of operations or cash flows. See Note 11 for further information. Film and Television Costs In March 2019, the FASB updated the accounting guidance related to film and television costs. The updated guidance aligns the accounting for production costs of episodic television series with those of films, allowing for costs to be capitalized in excess of amounts of revenue contracted for each episode. The updated guidance also updates certain presentation and disclosure requirements for capitalized film and television costs, and requires impairment testing to be performed at a group level for capitalized film and television costs when the content is predominantly monetized with other owned or licensed content. The updated guidance is effective for us as of January 1, 2020 and early adoption is permitted. We are currently in the process of determining the impact that the updated accounting guidance will have on our consolidated financial statements, however we do not expect there to be a material impact on our consolidated results of operations or cash flows.
Leases	Our leases consist primarily of real estate, vehicles and other equipment. We determine if an arrangement is a lease at inception. Lease assets and liabilities are recognized upon commencement of the lease based on the present value of the future minimum lease payments over the lease term. The lease term includes options to extend the lease when it is reasonably certain that we will exercise that option. We generally utilize our incremental borrowing rate based on information available at the commencement of the lease in determining the present value of future payments. The lease asset also includes any lease payments made and initial direct costs incurred and excludes lease incentives. Lease assets and liabilities are not recorded for leases with an initial term of one year or less. Lease expense for operating leases recorded in the balance sheet is included in operating costs and expenses and is based on the future minimum lease payments recognized on a straight-line basis over the term of the lease plus any variable lease costs. Operating lease expenses, inclusive of short-term and variable lease expenses, recognized in our condensed consolidated statement of income for the three and six months ended June 30, 2019 were $264 million and $538 million , respectively. These amounts do not include lease costs associated with production activities or other amounts capitalized in our condensed consolidated balance sheet, which are not material.
NBCUniversal Media LLC [Member]
Accounting Policies [Line Items]
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, cash flows and financial condition 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 2018 Annual Report on Form 10-K and the notes within this Form 10-Q.
Recent Accounting Pronouncements	In February 2016, the Financial Accounting Standards Board (“FASB”) updated the accounting guidance related to leases. The most significant change in the updated accounting guidance requires lessees to recognize lease assets and liabilities on the balance sheet for all operating leases with the exception of short-term leases. The standard also expands the disclosures regarding the amount, timing and uncertainty of cash flows arising from leases. For a lessee, the recognition, measurement and presentation of expenses and cash flows arising from a lease did not significantly change from previous guidance. We adopted the updated guidance on January 1, 2019 on a prospective basis and as a result, prior period amounts were not adjusted to reflect the impacts of the updated guidance. In addition, as permitted under the transition guidance within the new standard, prior scoping and classification conclusions were carried forward for leases existing as of the adoption date. Upon adoption, we recorded approximately $1.7 billion and $1.8 billion of operating lease assets and liabilities, respectively, which includes the impact of fair value adjustments, prepaid rent and lease incentives. The adoption of the updated accounting guidance did not impact our recognition of finance leases, which were previously described as capital leases. As of the date of adoption, our liabilities for finance leases were $332 million , which were recorded in long-term debt, and the related assets were recorded in property and equipment, net. Our finance leases were not considered material for further disclosure. The adoption of the new accounting guidance did not have a material impact on our consolidated results of operations or cash flows. See Note 9 for further information. Film and Television Costs In March 2019, the FASB updated the accounting guidance related to film and television costs. The updated guidance aligns the accounting for production costs of episodic television series with those of films, allowing for costs to be capitalized in excess of amounts of revenue contracted for each episode. The updated guidance also updates certain presentation and disclosure requirements for capitalized film and television costs, and requires impairment testing to be performed at a group level for capitalized film and television costs when the content is predominantly monetized with other owned or licensed content. The updated guidance is effective for us as of January 1, 2020 and early adoption is permitted. We are currently in the process of determining the impact that the updated accounting guidance will have on our consolidated financial statements, however we do not expect there to be a material impact on our consolidated results of operations or cash flows.
Leases	Our leases consist primarily of real estate and equipment. We determine if an arrangement is a lease at inception. Lease assets and liabilities are recognized upon commencement of the lease based on the present value of the future minimum lease payments over the lease term. The lease term includes options to extend the lease when it is reasonably certain that we will exercise that option. We generally utilize our incremental borrowing rate based on information available at the commencement of the lease in determining the present value of future payments. The lease asset also includes any lease payments made and initial direct costs incurred and excludes lease incentives. Lease assets and liabilities are not recorded for leases with an initial term of one year or less. Lease expense for operating leases recorded in the balance sheet is included in operating costs and expenses and is based on the future minimum lease payments recognized on a straight-line basis over the term of the lease plus any variable lease costs. Operating lease expenses, inclusive of short-term and variable lease expenses, recognized in our condensed consolidated statement of income for the three and six months ended June 30, 2019 were $110 million and $221 million , respectively. These amounts do not include lease costs associated with production activities or other amounts capitalized in our condensed consolidated balance sheet, which are not material.

Segment Information (Tables)

Segment Information (Tables)	6 Months Ended
	Jun. 30, 2019
Segment Reporting Information [Line Items]
Financial Data by Business Segment	Our financial data by business segment is presented in the tables below. Three Months Ended June 30, 2019 (in millions) Revenue Adjusted EBITDA (d) Depreciation and Amortization Capital Cash Paid for Intangible Assets Cable Communications $ 14,450 $ 5,854 $ 2,036 $ 1,594 $ 303 NBCUniversal Cable Networks 2,947 1,201 183 6 4 Broadcast Television 2,402 534 40 37 3 Filmed Entertainment 1,457 183 20 4 6 Theme Parks 1,464 590 170 378 17 Headquarters and Other (a) 22 (182 ) 114 48 35 Eliminations (b) (86 ) (2 ) — — — NBCUniversal 8,206 2,324 527 473 65 Sky 4,828 772 673 177 152 Corporate and Other (c) 56 (213 ) 40 19 11 Eliminations (b) (682 ) (21 ) — — — Comcast Consolidated $ 26,858 $ 8,716 $ 3,276 $ 2,263 $ 531 Three Months Ended June 30, 2018 (in millions) Revenue Adjusted EBITDA (d) Depreciation and Amortization Capital Cash Paid for Intangible Assets Cable Communications $ 13,912 $ 5,449 $ 2,023 $ 1,767 $ 344 NBCUniversal Cable Networks 2,874 1,176 179 8 5 Broadcast Television 2,391 417 40 32 3 Filmed Entertainment 1,710 138 63 8 8 Theme Parks 1,361 569 167 360 119 Headquarters and Other (a) 15 (148 ) 104 53 31 Eliminations (b) (78 ) (2 ) — — — NBCUniversal 8,273 2,150 553 461 166 Corporate and Other (c) 96 (192 ) 27 22 1 Eliminations (b) (546 ) 10 — — — Comcast Consolidated $ 21,735 $ 7,417 $ 2,603 $ 2,250 $ 511 Six Months Ended June 30, 2019 (in millions) Revenue Adjusted EBITDA (d) Depreciation and Amortization Capital Expenditures Cash Paid for Intangible Assets Cable Communications $ 28,730 $ 11,582 $ 4,071 $ 2,957 $ 626 NBCUniversal Cable Networks 5,815 2,463 365 12 6 Broadcast Television 4,869 921 79 50 6 Filmed Entertainment 3,225 547 39 8 11 Theme Parks 2,740 1,088 332 772 36 Headquarters and Other (a) 39 (356 ) 227 84 77 Eliminations (b) (169 ) (2 ) — — — NBCUniversal 16,519 4,661 1,042 926 136 Sky 9,625 1,435 1,414 436 303 Corporate and Other (c) 164 (400 ) 69 36 13 Eliminations (b) (1,321 ) (9 ) — — — Comcast Consolidated $ 53,717 $ 17,269 $ 6,596 $ 4,355 $ 1,078 Six Months Ended June 30, 2018 (in millions) Revenue Adjusted EBITDA (d) Depreciation and Amortization Capital Expenditures Cash Paid for Intangible Assets Cable Communications $ 27,615 $ 10,666 $ 4,084 $ 3,458 $ 631 NBCUniversal Cable Networks (e) 6,031 2,430 368 11 9 Broadcast Television (e) 5,888 924 74 62 75 Filmed Entertainment 3,357 341 91 15 14 Theme Parks 2,642 1,064 322 542 135 Headquarters and Other (a) 29 (336 ) 208 100 63 Eliminations (b)(e) (177 ) (2 ) — — — NBCUniversal 17,770 4,421 1,063 730 296 Corporate and Other (c) 339 (377 ) 55 35 3 Eliminations (b)(e) (1,198 ) (49 ) — — — Comcast Consolidated $ 44,526 $ 14,661 $ 5,202 $ 4,223 $ 930 (a) NBCUniversal Headquarters and Other activities include costs associated with overhead, allocations, personnel costs and headquarter initiatives. (b) Included in Eliminations are transactions that our segments entered 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 Cable Networks and Broadcast Television segments generate revenue by selling advertising to our Cable Communications segment • our Filmed Entertainment and Broadcast Television segments generate revenue by licensing content to our Cable Networks segment; for segment reporting, this revenue is recognized as the programming rights asset for the licensed content is amortized based on third party revenue • our Filmed Entertainment, Cable Networks and Broadcast Television segments generate revenue by licensing content to our Sky segment (c) Corporate and Other activities include costs associated with overhead and personnel, revenue and expenses associated with operations of Comcast Spectacor, which owns the Philadelphia Flyers and the Wells Fargo Center arena in Philadelphia, Pennsylvania, as well as other business development initiatives. (d) We use Adjusted EBITDA as the measure of profit or loss for our operating segments. Adjusted EBITDA is defined as net income attributable to Comcast Corporation before net income (loss) attributable to noncontrolling interests and redeemable subsidiary preferred stock, income tax expense, investment and other income (loss), net, interest expense, depreciation and amortization expense, and other operating gains and losses (such as impairment charges related to fixed and intangible assets and gains or losses on the sale of long-lived assets), if any. From time to time, we may exclude from Adjusted EBITDA the impact of certain events, gains, losses or other charges (such as significant legal settlements) that affect the period-to-period comparability of our operating performance. Our reconciliation of the aggregate amount of Adjusted EBITDA for our reportable segments to consolidated income before income taxes is presented in the table below. Three Months Ended Six Months Ended (in millions) 2019 2018 2019 2018 Adjusted EBITDA $ 8,716 $ 7,417 $ 17,269 $ 14,661 Adjustment for Sky transaction-related costs (84 ) — (135 ) — Depreciation (2,197 ) (2,021 ) (4,437 ) (4,032 ) Amortization (1,079 ) (582 ) (2,159 ) (1,170 ) Other operating gains — 200 — 200 Interest expense (1,137 ) (806 ) (2,287 ) (1,583 ) Investment and other income (loss), net (55 ) 77 621 203 Income before income taxes $ 4,164 $ 4,285 $ 8,872 $ 8,279 (e) The re venue and operating costs and expenses associated with our broadcast of the 2018 PyeongChang Olympics were reported in our Cable Networks and Broadcast Television segments. The revenue and operating costs and expenses associated with our broadcast of the 2018 Super Bowl were reported in our Broadcast Television segment. Included in Eliminations are transactions relating to these events that our Broadcast Television and Cable Networks segments entered into with our other segments.
Reconciliation of Adjusted EBITDA from Segments to Consolidated	Three Months Ended Six Months Ended (in millions) 2019 2018 2019 2018 Adjusted EBITDA $ 8,716 $ 7,417 $ 17,269 $ 14,661 Adjustment for Sky transaction-related costs (84 ) — (135 ) — Depreciation (2,197 ) (2,021 ) (4,437 ) (4,032 ) Amortization (1,079 ) (582 ) (2,159 ) (1,170 ) Other operating gains — 200 — 200 Interest expense (1,137 ) (806 ) (2,287 ) (1,583 ) Investment and other income (loss), net (55 ) 77 621 203 Income before income taxes $ 4,164 $ 4,285 $ 8,872 $ 8,279
NBCUniversal Media LLC [Member]
Segment Reporting Information [Line Items]
Financial Data by Business Segment	We use Adjusted EBITDA to evaluate the profitability of our operating segments and the components of net income attributable to NBCUniversal excluded from Adjusted EBITDA are not separately evaluated. To be consistent with our current management reporting presentation, 2018 operating results were reclassified related to certain NBCUniversal businesses now presented in Headquarters and Other. Our financial data by business segment is presented in the tables below. Three Months Ended June 30, 2019 (in millions) Revenue Adjusted EBITDA (c) Depreciation and Amortization Capital Cash Paid for Intangible Assets Cable Networks $ 2,947 $ 1,201 $ 183 $ 6 $ 4 Broadcast Television 2,402 534 40 37 3 Filmed Entertainment 1,457 183 20 4 6 Theme Parks 1,464 590 170 378 17 Headquarters and Other (a) 45 (195 ) 114 48 35 Eliminations (b) (88 ) (2 ) — — — Total $ 8,227 $ 2,311 $ 527 $ 473 $ 65 Three Months Ended June 30, 2018 (in millions) Revenue Adjusted EBITDA (c) Depreciation and Amortization Capital Cash Paid for Intangible Assets Cable Networks $ 2,874 $ 1,176 $ 179 $ 8 $ 5 Broadcast Television 2,391 417 40 32 3 Filmed Entertainment 1,710 138 63 8 8 Theme Parks 1,361 569 167 360 119 Headquarters and Other (a) 57 (138 ) 104 53 31 Eliminations (b) (80 ) (2 ) — — — Total $ 8,313 $ 2,160 $ 553 $ 461 $ 166 Six Months Ended June 30, 2019 (in millions) Revenue Adjusted EBITDA (c) Depreciation and Amortization Capital Expenditures Cash Paid for Intangible Assets Cable Networks $ 5,815 $ 2,463 $ 365 $ 12 $ 6 Broadcast Television 4,869 921 79 50 6 Filmed Entertainment 3,225 547 39 8 11 Theme Parks 2,740 1,088 332 772 36 Headquarters and Other (a) 96 (359 ) 227 84 77 Eliminations (b) (173 ) (2 ) — — — Total $ 16,572 $ 4,658 $ 1,042 $ 926 $ 136 Six Months Ended June 30, 2018 (in millions) Revenue Adjusted EBITDA (c) Depreciation and Amortization Capital Expenditures Cash Paid for Intangible Assets Cable Networks (d) $ 6,031 $ 2,430 $ 368 $ 11 $ 9 Broadcast Television (d) 5,888 924 74 62 75 Filmed Entertainment 3,357 341 91 15 14 Theme Parks 2,642 1,064 322 542 135 Headquarters and Other (a) 108 (312 ) 208 100 63 Eliminations (b)(d) (183 ) (2 ) — — — Total $ 17,843 $ 4,445 $ 1,063 $ 730 $ 296 (a) Headquarters and Other activities include costs associated with overhead, allocations, personnel costs and headquarter initiatives. (b) Included in Eliminations are transactions that our segments enter into with one another, which consisted primarily of the licensing of film and television content from our Filmed Entertainment and Broadcast Television segments to our Cable Networks segment; for segment reporting, this revenue is recognized as the programming rights asset for the licensed content is amortized based on third party revenue. (c) We use Adjusted EBITDA as the measure of profit or loss for our operating segments. Adjusted EBITDA is defined as net income attributable to NBCUniversal before net income (loss) attributable to noncontrolling interests, income tax expense, investment and other income (loss), net, interest expense, depreciation and amortization expense, and other operating gains and losses (such as impairment charges related to fixed and intangible assets and gains or losses on the sale of long-lived assets), if any. From time to time, we may exclude from Adjusted EBITDA the impact of certain events, gains, losses or other charges (such as significant legal settlements) that affect the period-to-period comparability of our operating performance. Our reconciliation of the aggregate amount of Adjusted EBITDA for our reportable segments to consolidated income before income taxes is presented in the table below. Three Months Ended Six Months Ended (in millions) 2019 2018 2019 2018 Adjusted EBITDA $ 2,311 $ 2,160 $ 4,658 $ 4,445 Depreciation (253 ) (258 ) (496 ) (500 ) Amortization (274 ) (295 ) (546 ) (563 ) Interest expense (122 ) (133 ) (253 ) (260 ) Investment and other income (loss), net 40 (168 ) 280 (172 ) Income before income taxes $ 1,702 $ 1,306 $ 3,643 $ 2,950 (d) The rev enue and operating costs and expenses associated with our broadcast of the 2018 PyeongChang Olympics were reported in our Cable Networks and Broadcast Television segments. The revenue and operating costs and expenses associated with our broadcast of the 2018 Super Bowl were reported in our Broadcast Television segment. Included in Eliminations are transactions relating to these events that our Broadcast Television and Cable Networks segments entered into with our other segments.
Reconciliation of Adjusted EBITDA from Segments to Consolidated	Three Months Ended Six Months Ended (in millions) 2019 2018 2019 2018 Adjusted EBITDA $ 2,311 $ 2,160 $ 4,658 $ 4,445 Depreciation (253 ) (258 ) (496 ) (500 ) Amortization (274 ) (295 ) (546 ) (563 ) Interest expense (122 ) (133 ) (253 ) (260 ) Investment and other income (loss), net 40 (168 ) 280 (172 ) Income before income taxes $ 1,702 $ 1,306 $ 3,643 $ 2,950

Revenue (Tables)

Revenue (Tables)	6 Months Ended
	Jun. 30, 2019
Revenue [Line Items]
Disaggregation of revenue	Three Months Ended Six Months Ended (in millions) 2019 2018 2019 2018 Residential: High-speed internet $ 4,663 $ 4,262 $ 9,240 $ 8,419 Video 5,594 5,628 11,222 11,287 Voice 982 994 1,972 2,000 Wireless 244 202 469 387 Business services 1,933 1,761 3,824 3,487 Advertising 607 666 1,163 1,248 Other 427 399 840 787 Total Cable Communications (a)(b) 14,450 13,912 28,730 27,615 Distribution 1,707 1,650 3,442 3,511 Advertising 931 929 1,783 1,906 Content licensing and other 309 295 590 614 Total Cable Networks 2,947 2,874 5,815 6,031 Advertising 1,329 1,387 2,646 3,752 Content licensing 472 481 1,032 1,003 Distribution and other 601 523 1,191 1,133 Total Broadcast Television 2,402 2,391 4,869 5,888 Theatrical 252 540 697 963 Content licensing 712 648 1,529 1,381 Home entertainment 229 225 496 473 Other 264 297 503 540 Total Filmed Entertainment 1,457 1,710 3,225 3,357 Total Theme Parks 1,464 1,361 2,740 2,642 Headquarters and Other 22 15 39 29 Eliminations (c) (86 ) (78 ) (169 ) (177 ) Total NBCUniversal 8,206 8,273 16,519 17,770 Direct-to-consumer 3,889 — 7,723 — Content 376 — 746 — Advertising 563 — 1,156 — Total Sky 4,828 — 9,625 — Corporate and Other (b) 56 96 164 339 Eliminations (c) (682 ) (546 ) (1,321 ) (1,198 ) Total revenue $ 26,858 $ 21,735 $ 53,717 $ 44,526 (a) For both the three and six months ended June 30, 2019 , 2.5% of Cable Communications segment revenue was derived from franchise and other regulatory fees. For both the three and six months ended June 30, 2018 , 2.7% of Cable Communications segment revenue was derived from franchise and other regulatory fees. (b) Comcast Cable’s wireless phone service is now presented in the Cable Communications segment. Results were previously presented in Corporate and Other. We recognize revenue from our wireless phone service as the services are provided, similar to how we recognize revenue for other residential cable services. We recognize revenue from the sale of handsets at the point of sale. (c) Included in Eliminations are transactions that our segments enter into with one another. See Note 2 for a description of these transactions. We operate primarily in the United States but also in select international markets. The table below summarizes revenue by geographic location. Three Months Ended Six Months Ended (in millions) 2019 2018 2019 2018 United States $ 20,539 $ 19,931 $ 40,996 $ 40,816 Europe 5,297 699 10,667 1,520 Other 1,022 1,105 2,054 2,190 Total revenue $ 26,858 $ 21,735 $ 53,717 $ 44,526
Schedule of receivables, net	(in millions) June 30, December 31, Receivables, gross $ 11,381 $ 11,456 Less: Allowance for doubtful accounts 546 352 Receivables, net $ 10,835 $ 11,104
Other balance sheet accounts	(in millions) June 30, December 31, Noncurrent receivables, net (included in other noncurrent assets, net) $ 1,306 $ 1,399 Contract acquisition and fulfillment costs (included in other noncurrent assets, net) $ 1,037 $ 991 Noncurrent deferred revenue (included in other noncurrent liabilities) $ 888 $ 650
NBCUniversal Media LLC [Member]
Revenue [Line Items]
Disaggregation of revenue	Three Months Ended Six Months Ended (in millions) 2019 2018 2019 2018 Distribution $ 1,707 $ 1,650 $ 3,442 $ 3,511 Advertising 931 929 1,783 1,906 Content licensing and other 309 295 590 614 Total Cable Networks 2,947 2,874 5,815 6,031 Advertising 1,329 1,387 2,646 3,752 Content licensing 472 481 1,032 1,003 Distribution and other 601 523 1,191 1,133 Total Broadcast Television 2,402 2,391 4,869 5,888 Theatrical 252 540 697 963 Content licensing 712 648 1,529 1,381 Home entertainment 229 225 496 473 Other 264 297 503 540 Total Filmed Entertainment 1,457 1,710 3,225 3,357 Total Theme Parks 1,464 1,361 2,740 2,642 Headquarters and Other 45 57 96 108 Eliminations (a) (88 ) (80 ) (173 ) (183 ) Total revenue $ 8,227 $ 8,313 $ 16,572 $ 17,843 (a) Included in Eliminations are transactions that our segments enter into with one another. See Note 2 for a description of these transactions. We operate primarily in the United States, but also in select international markets primarily in Europe and Asia. The table below summarizes revenue by geographic location. Three Months Ended Six Months Ended (in millions) 2019 2018 2019 2018 United States $ 6,669 $ 6,533 $ 13,292 $ 14,187 Foreign 1,558 1,780 3,280 3,656 Total revenue $ 8,227 $ 8,313 $ 16,572 $ 17,843
Schedule of receivables, net	(in millions) June 30, December 31, Receivables, gross $ 7,304 $ 7,392 Less: Allowance for doubtful accounts 110 99 Receivables, net $ 7,194 $ 7,293
Other balance sheet accounts	(in millions) June 30, December 31, Noncurrent receivables, net (included in other noncurrent assets, net) $ 1,181 $ 1,180 Noncurrent deferred revenue (included in other noncurrent liabilities) $ 657 $ 481

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2019
Earnings Per Share [Abstract]
Computation of diluted EPS	Computation of Diluted EPS Three Months Ended June 30 2019 2018 (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 $ 3,125 4,547 $ 0.69 $ 3,216 4,598 $ 0.70 Effect of dilutive securities: Assumed exercise or issuance of shares relating to stock plans 60 45 Diluted EPS attributable to Comcast Corporation shareholders $ 3,125 4,607 $ 0.68 $ 3,216 4,643 $ 0.69 Six Months Ended June 30 2019 2018 (in millions, except per share data) Net Income Shares Per Share Net Income Shares Per Share Basic EPS attributable to Comcast Corporation shareholders $ 6,678 4,540 $ 1.47 $ 6,334 4,616 $ 1.37 Effect of dilutive securities: Assumed exercise or issuance of shares relating to stock plans 60 58 Diluted EPS attributable to Comcast Corporation shareholders $ 6,678 4,600 $ 1.45 $ 6,334 4,674 $ 1.36

Significant Transactions (Table

Significant Transactions (Tables)	6 Months Ended
	Jun. 30, 2019
Business Combinations [Abstract]
Allocation of Purchase Price	The table below presents the allocation of the all-cash purchase price of £30.2 billion , or $39.4 billion , to the assets and liabilities of Sky as a result of the transaction. Allocation of Purchase Price (in millions) Consideration transferred $ 39,387 Allocation of purchase price Cash $ 1,283 Accounts receivable and other current assets 2,359 Film and television costs 2,512 Property and equipment 4,127 Intangible assets 19,539 Accounts payable, accrued liabilities and other current liabilities (5,885 ) Long-term debt (11,468 ) Deferred tax assets (liabilities), net (2,974 ) Other noncurrent assets and (liabilities), net (1,398 ) Fair value of identifiable net assets acquired 8,095 Goodwill $ 31,292
Amounts Related to Expenses Included in Consolidated Statement of Operations	The table below presents the amounts related to these expenses included in our condensed consolidated statement of income. (in millions) Three Months Ended Six Months Ended Other operating and administrative expenses $ 11 $ 21 Interest expense $ 11 $ 11
Unaudited Pro Forma Information	The following unaudited pro forma information has been presented as if the Sky transaction occurred on January 1, 2017. This information is based on historical results of operations, adjusted for allocation of purchase price and other acquisition accounting adjustments, and is not necessarily indicative of what the results would have been had we operated the business since January 1, 2017. For pro forma purposes, 2018 earnings were adjusted to exclude the acquisition-related costs. No pro forma adjustments have been made for cost savings or synergies that have been or may be achieved by the combined businesses. (in millions, except per share data) Three Months Ended Six Months Ended Revenue $ 26,653 $ 54,415 Net income attributable to Comcast Corporation $ 2,957 $ 5,940 Basic earnings per common share attributable to Comcast Corporation shareholders $ 0.65 $ 1.29 Diluted earnings per common share attributable to Comcast Corporation shareholders $ 0.64 $ 1.27

Film and Television Costs (Tabl

Film and Television Costs (Tables)	6 Months Ended
	Jun. 30, 2019
Film And Television Costs [Line Items]
Film and Television Costs	(in millions) June 30, December 31, Film Costs: Released, less amortization $ 1,577 $ 1,600 Completed, not released 86 144 In production and in development 1,376 1,063 3,039 2,807 Television Costs: Released, less amortization 2,278 2,289 In production and in development 1,014 953 3,292 3,242 Programming rights, less amortization 4,169 5,534 10,500 11,583 Less: Current portion of programming rights 1,947 3,746 Film and television costs $ 8,553 $ 7,837
NBCUniversal Media LLC [Member]
Film And Television Costs [Line Items]
Film and Television Costs	(in millions) June 30, December 31, Film Costs: Released, less amortization $ 1,558 $ 1,600 Completed, not released 86 144 In production and in development 1,376 1,063 3,020 2,807 Television Costs: Released, less amortization 2,165 2,161 In production and in development 1,014 953 3,179 3,114 Programming rights, less amortization 2,553 2,694 8,752 8,615 Less: Current portion of programming rights 1,156 1,323 Film and television costs $ 7,596 $ 7,292

Investments (Tables)

Investments (Tables)	6 Months Ended
	Jun. 30, 2019
Investments [Line Items]
Investment and Other Income (Loss), Net	Investment and Other Income (Loss), Net Three Months Ended Six Months Ended (in millions) 2019 2018 2019 2018 Equity in net income (losses) of investees, net $ (202 ) $ 69 $ 60 $ 20 Realized and unrealized gains (losses) on equity securities, net 194 (40 ) 408 (12 ) Other income (loss), net (47 ) 48 153 195 Investment and other income (loss), net $ (55 ) $ 77 $ 621 $ 203
Investment Summary	(in millions) June 30, December 31, Equity method $ 5,719 $ 4,035 Marketable equity securities 577 341 Nonmarketable equity securities 2,057 1,805 Other investments 1,803 1,796 Total investments 10,156 7,977 Less: Current investments 1,718 94 Noncurrent investments $ 8,438 $ 7,883
NBCUniversal Media LLC [Member]
Investments [Line Items]
Investment and Other Income (Loss), Net	Investment and Other Income (Loss), Net Three Months Ended Six Months Ended (in millions) 2019 2018 2019 2018 Equity in net income (losses) of investees, net $ (91 ) $ (87 ) $ (211 ) $ (187 ) Realized and unrealized gains (losses) on equity securities, net 97 (74 ) 258 (37 ) Other income (loss), net 34 (7 ) 233 52 Investment and other income (loss), net $ 40 $ (168 ) $ 280 $ (172 )
Investment Summary	(in millions) June 30, December 31, Equity method $ 1,342 $ 707 Marketable equity securities 420 162 Nonmarketable equity securities 916 811 Total investments $ 2,678 $ 1,680

Supplemental Financial Inform_2

Supplemental Financial Information (Tables)	6 Months Ended
	Jun. 30, 2019
Supplemental Financial Information [Line Items]
Schedule of operating lease assets and liabilities	(in millions) June 30, December 31, Noncurrent receivables, net (included in other noncurrent assets, net) $ 1,306 $ 1,399 Contract acquisition and fulfillment costs (included in other noncurrent assets, net) $ 1,037 $ 991 Noncurrent deferred revenue (included in other noncurrent liabilities) $ 888 $ 650
Schedule of future minimum rental commitments for operating leases under new accounting guidance	The table below summarizes our future minimum rental commitments for operating leases as of June 30, 2019 applying the new accounting guidance. (in millions) June 30, Remaining six months of 2019 $ 431 2020 856 2021 743 2022 609 2023 514 Thereafter 2,591 Total future minimum lease payments 5,744 Less: imputed interest 1,083 Total liability $ 4,661
Schedule of future minimum rental commitments and rent expense for operating leases under previous accounting guidance	The tables below summarize our future minimum rental commitments for operating leases as of December 31, 2018 and rent expense for operating leases for the three and six months ended June 30, 2018 using the accounting guidance in effect at that time. These amounts have been updated to include $804 million of future cash payments related to additional contracts determined to be operating leases in connection with the Sky transaction. (in millions) December 31, 2019 $ 891 2020 $ 824 2021 $ 722 2022 $ 592 2023 $ 513 Thereafter $ 2,608 (in millions) Three Months Ended Six Months Ended Rental expense $ 184 $ 370
Schedule of recognized share-based compensation expense	Recognized Share-Based Compensation Expense Three Months Ended Six Months Ended (in millions) 2019 2018 2019 2018 Restricted share units $ 167 $ 102 $ 294 $ 185 Stock options 72 61 119 105 Employee stock purchase plans 6 5 15 17 Total $ 245 $ 168 $ 428 $ 307
Schedule of cash payments for interest and income taxes	Cash Payments for Interest and Income Taxes Six Months Ended (in millions) 2019 2018 Interest $ 2,111 $ 1,354 Income taxes $ 1,634 $ 623
Schedule of cash, cash equivalents and restricted cash	The following table provides a reconciliation of cash, cash equivalents and restricted cash reported in the condensed consolidated balance sheet to the total of the amounts reported in our condensed consolidated statement of cash flows. (in millions) June 30, December 31, Cash and cash equivalents $ 3,919 $ 3,814 Restricted cash included in other current assets 79 46 Restricted cash included in other noncurrent assets, net 21 49 Cash, cash equivalents and restricted cash, end of period $ 4,019 $ 3,909
Schedule of accumulated other comprehensive income (loss)	Accumulated Other Comprehensive Income (Loss) (in millions) June 30, June 30, Unrealized gains (losses) on marketable securities $ 5 $ — Deferred gains (losses) on cash flow hedges 132 26 Unrecognized gains (losses) on employee benefit obligations 309 302 Cumulative translation adjustments (508 ) 133 Accumulated other comprehensive income (loss), net of deferred taxes $ (62 ) $ 461
Accounting Standards Update 2016-02 [Member]
Supplemental Financial Information [Line Items]
Schedule of operating lease assets and liabilities	The table below summarizes the operating lease assets and liabilities recorded in our condensed consolidated balance sheet. Condensed Consolidated Balance Sheet (in millions) June 30, Other noncurrent assets, net $ 4,063 Accrued expenses and other current liabilities $ 685 Other noncurrent liabilities $ 3,976
NBCUniversal Media LLC [Member]
Supplemental Financial Information [Line Items]
Schedule of operating lease assets and liabilities	(in millions) June 30, December 31, Noncurrent receivables, net (included in other noncurrent assets, net) $ 1,181 $ 1,180 Noncurrent deferred revenue (included in other noncurrent liabilities) $ 657 $ 481
Schedule of future minimum rental commitments for operating leases under new accounting guidance	The table below summarizes our future minimum rental commitments for operating leases as of June 30, 2019 applying the new accounting guidance. (in millions) June 30, Remaining six months of 2019 $ 117 2020 250 2021 217 2022 179 2023 154 Thereafter 1,452 Total future minimum lease payments 2,369 Less: imputed interest 668 Total liability $ 1,701
Schedule of future minimum rental commitments and rent expense for operating leases under previous accounting guidance	The tables below summarize our future minimum rental commitments for operating leases as of December 31, 2018 and rent expense for operating leases for the three and six months ended June 30, 2018 using the accounting guidance in effect at that time. (in millions) December 31, 2019 $ 248 2020 $ 232 2021 $ 199 2022 $ 168 2023 $ 144 Thereafter $ 1,380 (in millions) Three Months Ended Six Months Ended Rental expense $ 74 $ 143
Schedule of cash payments for interest and income taxes	Cash Payments for Interest and Income Taxes Six Months Ended (in millions) 2019 2018 Interest $ 217 $ 218 Income taxes $ 163 $ 225
Schedule of cash, cash equivalents and restricted cash	The following table provides a reconciliation of cash, cash equivalents and restricted cash reported in the condensed consolidated balance sheet to the total of the amounts reported in our condensed consolidated statement of cash flows. (in millions) June 30, December 31, Cash and cash equivalents $ 1,244 $ 1,444 Restricted cash included in other noncurrent assets, net 20 20 Cash, cash equivalents and restricted cash, end of period $ 1,264 $ 1,464
Schedule of accumulated other comprehensive income (loss)	Accumulated Other Comprehensive Income (Loss) (in millions) June 30, June 30, Deferred gains (losses) on cash flow hedges $ 9 $ 8 Unrecognized gains (losses) on employee benefit obligations 135 119 Cumulative translation adjustments 151 91 Accumulated other comprehensive income (loss) $ 295 $ 218
NBCUniversal Media LLC [Member] | Accounting Standards Update 2016-02 [Member]
Supplemental Financial Information [Line Items]
Schedule of operating lease assets and liabilities	The table below summarizes the operating lease assets and liabilities recorded in our condensed consolidated balance sheet. Condensed Consolidated Balance Sheet (in millions) June 30, Other noncurrent assets, net $ 1,591 Accrued expenses and other current liabilities $ 166 Other noncurrent liabilities $ 1,535

Related Party Transactions (Tab

Related Party Transactions (Tables)	6 Months Ended
	Jun. 30, 2019
NBCUniversal Media LLC [Member]
Related Party Transaction [Line Items]
Related Party Transactions Condensed Financial Statements	The following tables present transactions with Comcast and its consolidated subsidiaries that are included in our condensed consolidated financial statements. Condensed Consolidated Statement of Income Three Months Ended Six Months Ended (in millions) 2019 2018 2019 2018 Transactions with Comcast and Consolidated Subsidiaries Revenue $ 607 $ 480 $ 1,211 $ 1,074 Total costs and expenses $ (60 ) $ (42 ) $ (125 ) $ (103 ) Interest expense and investment and other income (loss), net $ 6 $ (20 ) $ 14 $ (43 ) Condensed Consolidated Balance Sheet (in millions) June 30, December 31, Transactions with Comcast and Consolidated Subsidiaries Receivables, net $ 484 $ 464 Note receivable from Comcast $ 2,534 $ 2,054 Film and television costs $ 27 $ 27 Other noncurrent assets, net $ 70 $ — Accounts payable and accrued expenses related to trade creditors $ 64 $ 78 Accrued expenses and other current liabilities $ 42 $ 32 Note payable to Comcast $ 197 $ 54 Long-term debt $ 768 $ 701 Other noncurrent liabilities $ 494 $ 410

Commitments and Contingencies (

Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 30, 2019
Commitment And Contingencies [Line Items]
Schedule of operating lease assets and liabilities	(in millions) June 30, December 31, Noncurrent receivables, net (included in other noncurrent assets, net) $ 1,306 $ 1,399 Contract acquisition and fulfillment costs (included in other noncurrent assets, net) $ 1,037 $ 991 Noncurrent deferred revenue (included in other noncurrent liabilities) $ 888 $ 650
Schedule of future minimum rental commitments for operating leases under new accounting guidance	The table below summarizes our future minimum rental commitments for operating leases as of June 30, 2019 applying the new accounting guidance. (in millions) June 30, Remaining six months of 2019 $ 431 2020 856 2021 743 2022 609 2023 514 Thereafter 2,591 Total future minimum lease payments 5,744 Less: imputed interest 1,083 Total liability $ 4,661
Schedule of future minimum rental commitments and rent expense for operating leases under previous accounting guidance	The tables below summarize our future minimum rental commitments for operating leases as of December 31, 2018 and rent expense for operating leases for the three and six months ended June 30, 2018 using the accounting guidance in effect at that time. These amounts have been updated to include $804 million of future cash payments related to additional contracts determined to be operating leases in connection with the Sky transaction. (in millions) December 31, 2019 $ 891 2020 $ 824 2021 $ 722 2022 $ 592 2023 $ 513 Thereafter $ 2,608 (in millions) Three Months Ended Six Months Ended Rental expense $ 184 $ 370
Accounting Standards Update 2016-02 [Member]
Commitment And Contingencies [Line Items]
Schedule of operating lease assets and liabilities	The table below summarizes the operating lease assets and liabilities recorded in our condensed consolidated balance sheet. Condensed Consolidated Balance Sheet (in millions) June 30, Other noncurrent assets, net $ 4,063 Accrued expenses and other current liabilities $ 685 Other noncurrent liabilities $ 3,976

Condensed Consolidating Finan_2

Condensed Consolidating Financial Information (Tables)	6 Months Ended
	Jun. 30, 2019
Condensed Financial Information Disclosure [Abstract]
Condensed Consolidating Statement of Income	Condensed Consolidating Statement of Income For the Three Months Ended June 30, 2019 (in millions) Comcast Comcast CCCL NBCUniversal Non- Elimination Consolidated Revenue: Service revenue $ — $ — $ — $ — $ 26,858 $ — $ 26,858 Management fee revenue 309 — 303 — — (612 ) — Total revenue 309 — 303 — 26,858 (612 ) 26,858 Costs and Expenses: Programming and production — — — — 8,255 — 8,255 Other operating and administrative 178 — 303 225 7,992 (612 ) 8,086 Advertising, marketing and promotion — — — — 1,885 — 1,885 Depreciation 16 — — — 2,181 — 2,197 Amortization 2 — — — 1,077 — 1,079 Total costs and expenses 196 — 303 225 21,390 (612 ) 21,502 Operating income (loss) 113 — — (225 ) 5,468 — 5,356 Interest expense (877 ) (3 ) (47 ) (117 ) (93 ) — (1,137 ) Investment and other income (loss), net 3,692 3,730 3,376 1,918 1,659 (14,430 ) (55 ) Income (loss) before income taxes 2,928 3,727 3,329 1,576 7,034 (14,430 ) 4,164 Income tax (expense) benefit 197 (1 ) 10 (5 ) (1,162 ) — (961 ) Net income (loss) 3,125 3,726 3,339 1,571 5,872 (14,430 ) 3,203 Less: Net income (loss) attributable to noncontrolling interests and redeemable subsidiary preferred stock — — — — 78 — 78 Net income (loss) attributable to Comcast Corporation $ 3,125 $ 3,726 $ 3,339 $ 1,571 $ 5,794 $ (14,430 ) $ 3,125 Comprehensive income (loss) attributable to Comcast Corporation $ 2,641 $ 3,756 $ 3,342 $ 1,644 $ 5,300 $ (14,042 ) $ 2,641 Condensed Consolidating Statement of Income For the Three Months Ended June 30, 2018 (in millions) Comcast Comcast CCCL NBCUniversal Non- Elimination Consolidated Revenue: Service revenue $ — $ — $ — $ — $ 21,735 $ — $ 21,735 Management fee revenue 298 — 293 — — (591 ) — Total revenue 298 — 293 — 21,735 (591 ) 21,735 Costs and Expenses: Programming and production — — — — 6,300 — 6,300 Other operating and administrative 190 — 293 224 6,249 (591 ) 6,365 Advertising, marketing and promotion — — — — 1,653 — 1,653 Depreciation 11 — — — 2,010 — 2,021 Amortization 2 — — — 580 — 582 Other operating gains — — — — (200 ) — (200 ) Total costs and expenses 203 — 293 224 16,592 (591 ) 16,721 Operating income (loss) 95 — — (224 ) 5,143 — 5,014 Interest expense (578 ) (3 ) (48 ) (113 ) (64 ) — (806 ) Investment and other income (loss), net 3,597 3,580 2,999 1,589 1,324 (13,012 ) 77 Income (loss) before income taxes 3,114 3,577 2,951 1,252 6,403 (13,012 ) 4,285 Income tax (expense) benefit 102 1 10 (5 ) (1,185 ) — (1,077 ) Net income (loss) 3,216 3,578 2,961 1,247 5,218 (13,012 ) 3,208 Less: Net income (loss) attributable to noncontrolling interests and redeemable subsidiary preferred stock — — — — (8 ) — (8 ) Net income (loss) attributable to Comcast Corporation $ 3,216 $ 3,578 $ 2,961 $ 1,247 $ 5,226 $ (13,012 ) $ 3,216 Comprehensive income (loss) attributable to Comcast Corporation $ 3,069 $ 3,527 $ 2,960 $ 1,069 $ 4,903 $ (12,459 ) $ 3,069 Condensed Consolidating Statement of Income For the Six Months Ended June 30, 2019 (in millions) Comcast Comcast CCCL NBCUniversal Non- Elimination Consolidated Revenue: Service revenue $ — $ — $ — $ — $ 53,717 $ — $ 53,717 Management fee revenue 614 — 602 — — (1,216 ) — Total revenue 614 — 602 — 53,717 (1,216 ) 53,717 Costs and Expenses: Programming and production — — — — 16,824 — 16,824 Other operating and administrative 366 — 602 496 15,738 (1,216 ) 15,986 Advertising, marketing and promotion — — — — 3,773 — 3,773 Depreciation 30 — — — 4,407 — 4,437 Amortization 3 — — — 2,156 — 2,159 Total costs and expenses 399 — 602 496 42,898 (1,216 ) 43,179 Operating income (loss) 215 — — (496 ) 10,819 — 10,538 Interest expense (1,773 ) (6 ) (96 ) (237 ) (175 ) — (2,287 ) Investment and other income (loss), net 7,907 7,873 6,690 4,099 3,897 (29,845 ) 621 Income (loss) before income taxes 6,349 7,867 6,594 3,366 14,541 (29,845 ) 8,872 Income tax (expense) benefit 329 (7 ) 20 (11 ) (2,368 ) — (2,037 ) Net income (loss) 6,678 7,860 6,614 3,355 12,173 (29,845 ) 6,835 Less: Net income (loss) attributable to noncontrolling interests and redeemable subsidiary preferred stock — — — — 157 — 157 Net income (loss) attributable to Comcast Corporation $ 6,678 $ 7,860 $ 6,614 $ 3,355 $ 12,016 $ (29,845 ) $ 6,678 Comprehensive income (loss) attributable to Comcast Corporation $ 6,984 $ 7,878 $ 6,617 $ 3,396 $ 12,460 $ (30,351 ) $ 6,984 Condensed Consolidating Statement of Income For the Six Months Ended June 30, 2018 (in millions) Comcast Comcast CCCL NBCUniversal Non- Elimination Consolidated Revenue: Service revenue $ — $ — $ — $ — $ 44,526 $ — $ 44,526 Management fee revenue 590 — 579 — — (1,169 ) — Total revenue 590 — 579 — 44,526 (1,169 ) 44,526 Costs and Expenses: Programming and production — — — — 13,729 — 13,729 Other operating and administrative 418 — 579 542 12,509 (1,169 ) 12,879 Advertising, marketing and promotion — — — — 3,257 — 3,257 Depreciation 22 — — — 4,010 — 4,032 Amortization 3 — — — 1,167 — 1,170 Other operating gains — — — — (200 ) — (200 ) Total costs and expenses 443 — 579 542 34,472 (1,169 ) 34,867 Operating income (loss) 147 — — (542 ) 10,054 — 9,659 Interest expense (1,139 ) (6 ) (95 ) (219 ) (124 ) — (1,583 ) Investment and other income (loss), net 7,117 6,899 5,825 3,531 2,912 (26,081 ) 203 Income (loss) before income taxes 6,125 6,893 5,730 2,770 12,842 (26,081 ) 8,279 Income tax (expense) benefit 209 1 19 (10 ) (2,114 ) — (1,895 ) Net income (loss) 6,334 6,894 5,749 2,760 10,728 (26,081 ) 6,384 Less: Net income (loss) attributable to noncontrolling interests and redeemable subsidiary preferred stock — — — — 50 — 50 Net income (loss) attributable to Comcast Corporation $ 6,334 $ 6,894 $ 5,749 $ 2,760 $ 10,678 $ (26,081 ) $ 6,334 Comprehensive income (loss) attributable to Comcast Corporation $ 6,340 $ 6,896 $ 5,749 $ 2,765 $ 10,694 $ (26,104 ) $ 6,340
Condensed Consolidating Statement of Cash Flows	Condensed Consolidating Statement of Cash Flows For the Six Months Ended June 30, 2019 (in millions) Comcast Comcast CCCL NBCUniversal Non- Elimination Consolidated Net cash provided by (used in) operating activities $ (1,375 ) $ 186 $ (80 ) $ (640 ) $ 16,180 $ — $ 14,271 Investing Activities: Net transactions with affiliates 5,616 (186 ) 80 597 (6,107 ) — — Capital expenditures (9 ) — — — (4,346 ) — (4,355 ) Cash paid for intangible assets (2 ) — — — (1,076 ) — (1,078 ) Acquisitions and construction of real estate properties (32 ) — — — (4 ) — (36 ) Construction of Universal Beijing Resort — — — — (450 ) — (450 ) Acquisitions, net of cash acquired — — — — (114 ) — (114 ) Proceeds from sales of businesses and investments — — — — 150 — 150 Purchases of investments (18 ) — — (63 ) (1,524 ) — (1,605 ) Other — — — — 74 — 74 Net cash provided by (used in) investing activities 5,555 (186 ) 80 534 (13,397 ) — (7,414 ) Financing Activities: Proceeds from (repayments of) short-term borrowings, net 487 — — — (1,288 ) — (801 ) Proceeds from borrowings — — — — 363 — 363 Repurchases and repayments of debt (2,507 ) — — (7 ) (1,642 ) — (4,156 ) Repurchases of common stock under repurchase program and employee plans (350 ) — — — — — (350 ) Dividends paid (1,823 ) — — — — — (1,823 ) Distributions to noncontrolling interests and dividends for redeemable subsidiary preferred stock — — — — (155 ) — (155 ) Other 13 — — — 177 — 190 Net cash provided by (used in) financing activities (4,180 ) — — (7 ) (2,545 ) — (6,732 ) Impact of foreign currency on cash, cash equivalents and restricted cash — — — — (15 ) — (15 ) Increase (decrease) in cash, cash equivalents and restricted cash — — — (113 ) 223 — 110 Cash, cash equivalents and restricted cash, beginning of period — — — 416 3,493 — 3,909 Cash, cash equivalents and restricted cash, end of period $ — $ — $ — $ 303 $ 3,716 $ — $ 4,019 Condensed Consolidating Statement of Cash Flows For the Six Months Ended June 30, 2018 (in millions) Comcast Comcast CCCL NBCUniversal Non- Elimination Consolidated Net cash provided by (used in) operating activities $ (491 ) $ 6 $ (78 ) $ (796 ) $ 13,896 $ — $ 12,537 Investing Activities: Net transactions with affiliates 4,096 (455 ) 78 571 (4,290 ) — — Capital expenditures (10 ) — — — (4,213 ) — (4,223 ) Cash paid for intangible assets (2 ) — — — (928 ) — (930 ) Acquisitions and construction of real estate properties (76 ) — — — (28 ) — (104 ) Construction of Universal Beijing Resort — — — — (116 ) — (116 ) Acquisitions, net of cash acquired — — — — (88 ) — (88 ) Proceeds from sales of investments — — — 67 46 — 113 Purchases of investments (28 ) — — (30 ) (480 ) — (538 ) Other — 449 — — 131 — 580 Net cash provided by (used in) investing activities 3,980 (6 ) 78 608 (9,966 ) — (5,306 ) Financing Activities: Proceeds from (repayments of) short-term borrowings, net (902 ) — — — 925 — 23 Proceeds from borrowings 3,973 — — — 306 — 4,279 Repurchases and repayments of debt (1,900 ) — — (3 ) (2,444 ) — (4,347 ) Repurchases of common stock under repurchase program and employee plans (2,998 ) — — — — — (2,998 ) Dividends paid (1,616 ) — — — — — (1,616 ) Distributions to noncontrolling interests and dividends for redeemable subsidiary preferred stock — — — — (140 ) — (140 ) Other (46 ) — — — (115 ) — (161 ) Net cash provided by (used in) financing activities (3,489 ) — — (3 ) (1,468 ) — (4,960 ) Increase (decrease) in cash, cash equivalents and restricted cash — — — (191 ) 2,462 — 2,271 Cash, cash equivalents and restricted cash, beginning of period — — — 496 3,075 — 3,571 Cash, cash equivalents and restricted cash, end of period $ — $ — $ — $ 305 $ 5,537 $ — $ 5,842
Condensed Consolidating Balance Sheet	Condensed Consolidating Balance Sheet June 30, 2019 (in millions) Comcast Comcast CCCL NBCUniversal Non- Elimination Consolidated Assets Cash and cash equivalents $ — $ — $ — $ 303 $ 3,616 $ — $ 3,919 Receivables, net — — — — 10,835 — 10,835 Programming rights — — — — 1,947 — 1,947 Other current assets 115 22 — 22 4,501 — 4,660 Total current assets 115 22 — 325 20,899 — 21,361 Film and television costs — — — — 8,553 — 8,553 Investments 281 12 148 898 7,099 — 8,438 Investments in and amounts due from subsidiaries eliminated upon consolidation 160,659 147,775 130,444 56,265 98,426 (593,569 ) — Property and equipment, net 668 — — — 45,379 — 46,047 Franchise rights — — — — 59,365 — 59,365 Goodwill — — — — 67,945 — 67,945 Other intangible assets, net 10 — — — 36,066 — 36,076 Other noncurrent assets, net 1,038 163 — 101 7,935 (467 ) 8,770 Total assets $ 162,771 $ 147,972 $ 130,592 $ 57,589 $ 351,667 $ (594,036 ) $ 256,555 Liabilities and Equity Accounts payable and accrued expenses related to trade creditors $ — $ — $ — $ — $ 10,014 $ — $ 10,014 Accrued participations and residuals — — — — 1,683 — 1,683 Deferred revenue — — — — 2,642 — 2,642 Accrued expenses and other current liabilities 2,403 244 356 388 6,913 — 10,304 Current portion of long-term debt 2,587 — — 2,011 1,767 — 6,365 Total current liabilities 4,990 244 356 2,399 23,019 — 31,008 Long-term debt, less current portion 77,782 152 2,100 5,751 15,463 — 101,248 Deferred income taxes — 334 — 68 28,206 (612 ) 27,996 Other noncurrent liabilities 3,149 — — 1,547 12,303 145 17,144 Redeemable noncontrolling interests and redeemable subsidiary preferred stock — — — — 1,329 — 1,329 Equity: Common stock 54 — — — — — 54 Other shareholders’ equity 76,796 147,242 128,136 47,824 270,367 (593,569 ) 76,796 Total Comcast Corporation shareholders’ equity 76,850 147,242 128,136 47,824 270,367 (593,569 ) 76,850 Noncontrolling interests — — — — 980 — 980 Total equity 76,850 147,242 128,136 47,824 271,347 (593,569 ) 77,830 Total liabilities and equity $ 162,771 $ 147,972 $ 130,592 $ 57,589 $ 351,667 $ (594,036 ) $ 256,555 Condensed Consolidating Balance Sheet December 31, 2018 (in millions) Comcast Comcast CCCL NBCUniversal Non- Elimination Consolidated Assets Cash and cash equivalents $ — $ — $ — $ 416 $ 3,398 $ — $ 3,814 Receivables, net — — — — 11,104 — 11,104 Programming rights — — — — 3,746 — 3,746 Other current assets 66 20 — 28 3,070 — 3,184 Total current assets 66 20 — 444 21,318 — 21,848 Film and television costs — — — — 7,837 — 7,837 Investments 270 11 143 790 6,669 — 7,883 Investments in and amounts due from subsidiaries eliminated upon consolidation 157,264 147,028 130,214 53,853 97,872 (586,231 ) — Property and equipment, net 670 — — — 43,767 — 44,437 Franchise rights — — — — 59,365 — 59,365 Goodwill — — — — 66,154 — 66,154 Other intangible assets, net 11 — — — 38,347 — 38,358 Other noncurrent assets, net 1,057 208 — 85 4,910 (458 ) 5,802 Total assets $ 159,338 $ 147,267 $ 130,357 $ 55,172 $ 346,239 $ (586,689 ) $ 251,684 Liabilities and Equity Accounts payable and accrued expenses related to trade creditors $ 2 $ — $ — $ — $ 8,492 $ — $ 8,494 Accrued participations and residuals — — — — 1,808 — 1,808 Deferred revenue — — — — 2,182 — 2,182 Accrued expenses and other current liabilities 2,357 150 360 282 7,572 — 10,721 Current portion of long-term debt 699 — — 4 3,695 — 4,398 Total current liabilities 3,058 150 360 286 23,749 — 27,603 Long-term debt, less current portion 81,661 146 2,100 7,748 15,690 — 107,345 Deferred income taxes — 314 — 65 27,734 (524 ) 27,589 Other noncurrent liabilities 3,006 — — 1,201 11,056 66 15,329 Redeemable noncontrolling interests and redeemable subsidiary preferred stock — — — — 1,316 — 1,316 Equity: Common stock 54 — — — — — 54 Other shareholders’ equity 71,559 146,657 127,897 45,872 265,805 (586,231 ) 71,559 Total Comcast Corporation shareholders’ equity 71,613 146,657 127,897 45,872 265,805 (586,231 ) 71,613 Noncontrolling interests — — — — 889 — 889 Total equity 71,613 146,657 127,897 45,872 266,694 (586,231 ) 72,502 Total liabilities and equity $ 159,338 $ 147,267 $ 130,357 $ 55,172 $ 346,239 $ (586,689 ) $ 251,684

Condensed Consolidated Financ_2

Condensed Consolidated Financial Statements (Details) - Sky Limited [Member] $ in Millions, £ in Billions	Oct. 09, 2018USD ($)	Oct. 09, 2018GBP (£)
Business Acquisition [Line Items]
Interest in business acquired in acquisition	100.00%	100.00%
Cash consideration transferred by Comcast	$ 39,387	£ 30.2

Segment Information (Details)

Segment Information (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019USD ($)	Jun. 30, 2018USD ($)	Jun. 30, 2019USD ($)segment	Jun. 30, 2018USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment			6
Financial Data by Business Segment
Revenue	$ 26,858	$ 21,735	$ 53,717	$ 44,526
Adjusted EBITDA	8,716	7,417	17,269	14,661
Depreciation and Amortization	3,276	2,603	6,596	5,202
Capital Expenditures	2,263	2,250	4,355	4,223
Cash Paid for Intangible Assets	531	511	$ 1,078	930
NBCUniversal Media LLC [Member]
Segment Reporting Information [Line Items]
Number of reportable segments | segment			4
Financial Data by Business Segment
Revenue	8,227	8,313	$ 16,572	17,843
Adjusted EBITDA	2,311	2,160	4,658	4,445
Depreciation and Amortization	527	553	1,042	1,063
Capital Expenditures	473	461	926	730
Cash Paid for Intangible Assets	65	166	136	296
Cable Communications [Member]
Financial Data by Business Segment
Revenue	14,450	13,912	28,730	27,615
Cable Networks [Member]
Financial Data by Business Segment
Revenue	2,947	2,874	5,815	6,031
Cable Networks [Member] | NBCUniversal Media LLC [Member]
Financial Data by Business Segment
Revenue	2,947	2,874	5,815	6,031
Broadcast Television [Member]
Financial Data by Business Segment
Revenue	2,402	2,391	4,869	5,888
Broadcast Television [Member] | NBCUniversal Media LLC [Member]
Financial Data by Business Segment
Revenue	2,402	2,391	4,869	5,888
Filmed Entertainment [Member]
Financial Data by Business Segment
Revenue	1,457	1,710	3,225	3,357
Filmed Entertainment [Member] | NBCUniversal Media LLC [Member]
Financial Data by Business Segment
Revenue	1,457	1,710	3,225	3,357
Theme Parks [Member]
Financial Data by Business Segment
Revenue	1,464	1,361	2,740	2,642
Theme Parks [Member] | NBCUniversal Media LLC [Member]
Financial Data by Business Segment
Revenue	1,464	1,361	2,740	2,642
NBCUniversal Segments [Member]
Financial Data by Business Segment
Revenue	8,206	8,273	16,519	17,770
Adjusted EBITDA	2,324	2,150	4,661	4,421
Depreciation and Amortization	527	553	1,042	1,063
Capital Expenditures	473	461	926	730
Cash Paid for Intangible Assets	65	166	136	296
Sky Limited [Member]
Financial Data by Business Segment
Revenue	4,828	0	9,625	0
Operating Segments [Member] | Cable Communications [Member]
Financial Data by Business Segment
Revenue	14,450	13,912	28,730	27,615
Adjusted EBITDA	5,854	5,449	11,582	10,666
Depreciation and Amortization	2,036	2,023	4,071	4,084
Capital Expenditures	1,594	1,767	2,957	3,458
Cash Paid for Intangible Assets	303	344	626	631
Operating Segments [Member] | Cable Networks [Member]
Financial Data by Business Segment
Revenue	2,947	2,874	5,815	6,031
Adjusted EBITDA	1,201	1,176	2,463	2,430
Depreciation and Amortization	183	179	365	368
Capital Expenditures	6	8	12	11
Cash Paid for Intangible Assets	4	5	6	9
Operating Segments [Member] | Cable Networks [Member] | NBCUniversal Media LLC [Member]
Financial Data by Business Segment
Revenue	2,947	2,874	5,815	6,031
Adjusted EBITDA	1,201	1,176	2,463	2,430
Depreciation and Amortization	183	179	365	368
Capital Expenditures	6	8	12	11
Cash Paid for Intangible Assets	4	5	6	9
Operating Segments [Member] | Broadcast Television [Member]
Financial Data by Business Segment
Revenue	2,402	2,391	4,869	5,888
Adjusted EBITDA	534	417	921	924
Depreciation and Amortization	40	40	79	74
Capital Expenditures	37	32	50	62
Cash Paid for Intangible Assets	3	3	6	75
Operating Segments [Member] | Broadcast Television [Member] | NBCUniversal Media LLC [Member]
Financial Data by Business Segment
Revenue	2,402	2,391	4,869	5,888
Adjusted EBITDA	534	417	921	924
Depreciation and Amortization	40	40	79	74
Capital Expenditures	37	32	50	62
Cash Paid for Intangible Assets	3	3	6	75
Operating Segments [Member] | Filmed Entertainment [Member]
Financial Data by Business Segment
Revenue	1,457	1,710	3,225	3,357
Adjusted EBITDA	183	138	547	341
Depreciation and Amortization	20	63	39	91
Capital Expenditures	4	8	8	15
Cash Paid for Intangible Assets	6	8	11	14
Operating Segments [Member] | Filmed Entertainment [Member] | NBCUniversal Media LLC [Member]
Financial Data by Business Segment
Revenue	1,457	1,710	3,225	3,357
Adjusted EBITDA	183	138	547	341
Depreciation and Amortization	20	63	39	91
Capital Expenditures	4	8	8	15
Cash Paid for Intangible Assets	6	8	11	14
Operating Segments [Member] | Theme Parks [Member]
Financial Data by Business Segment
Revenue	1,464	1,361	2,740	2,642
Adjusted EBITDA	590	569	1,088	1,064
Depreciation and Amortization	170	167	332	322
Capital Expenditures	378	360	772	542
Cash Paid for Intangible Assets	17	119	36	135
Operating Segments [Member] | Theme Parks [Member] | NBCUniversal Media LLC [Member]
Financial Data by Business Segment
Revenue	1,464	1,361	2,740	2,642
Adjusted EBITDA	590	569	1,088	1,064
Depreciation and Amortization	170	167	332	322
Capital Expenditures	378	360	772	542
Cash Paid for Intangible Assets	17	119	36	135
Operating Segments [Member] | Sky Limited [Member]
Financial Data by Business Segment
Revenue	4,828		9,625
Adjusted EBITDA	772		1,435
Depreciation and Amortization	673		1,414
Capital Expenditures	177		436
Cash Paid for Intangible Assets	152		303
Corporate, Non-Segment [Member]
Financial Data by Business Segment
Revenue	56	96	164	339
Adjusted EBITDA	(213)	(192)	(400)	(377)
Depreciation and Amortization	40	27	69	55
Capital Expenditures	19	22	36	35
Cash Paid for Intangible Assets	11	1	13	3
Corporate, Non-Segment [Member] | NBCUniversal Media LLC [Member]
Financial Data by Business Segment
Revenue	45	57	96	108
Adjusted EBITDA	(195)	(138)	(359)	(312)
Depreciation and Amortization	114	104	227	208
Capital Expenditures	48	53	84	100
Cash Paid for Intangible Assets	35	31	77	63
Corporate, Non-Segment [Member] | NBCUniversal Segments [Member]
Financial Data by Business Segment
Revenue	22	15	39	29
Adjusted EBITDA	(182)	(148)	(356)	(336)
Depreciation and Amortization	114	104	227	208
Capital Expenditures	48	53	84	100
Cash Paid for Intangible Assets	35	31	77	63
Eliminations [Member]
Financial Data by Business Segment
Revenue	(682)	(546)	(1,321)	(1,198)
Adjusted EBITDA	(21)	10	(9)	(49)
Depreciation and Amortization	0	0	0	0
Capital Expenditures	0	0	0	0
Cash Paid for Intangible Assets	0	0	0	0
Eliminations [Member] | NBCUniversal Media LLC [Member]
Financial Data by Business Segment
Revenue	(88)	(80)	(173)	(183)
Adjusted EBITDA	(2)	(2)	(2)	(2)
Depreciation and Amortization	0	0	0	0
Capital Expenditures	0	0	0	0
Cash Paid for Intangible Assets	0	0	0	0
Eliminations [Member] | NBCUniversal Segments [Member]
Financial Data by Business Segment
Revenue	(86)	(78)	(169)	(177)
Adjusted EBITDA	(2)	(2)	(2)	(2)
Depreciation and Amortization	0	0	0	0
Capital Expenditures	0	0	0	0
Cash Paid for Intangible Assets	$ 0	$ 0	$ 0	$ 0

Segment Information (Reconcilia

Segment Information (Reconciliation of Adjusted EBITDA from Segment to Consolidated Statements) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Adjusted EBITDA	$ 8,716	$ 7,417	$ 17,269	$ 14,661
Adjustment for Sky transaction-related costs	(84)	0	(135)	0
Depreciation	(2,197)	(2,021)	(4,437)	(4,032)
Amortization	(1,079)	(582)	(2,159)	(1,170)
Other operating gains	0	200	0	200
Interest expense	(1,137)	(806)	(2,287)	(1,583)
Investment and other income (loss), net	(55)	77	621	203
Income before income taxes	4,164	4,285	8,872	8,279
NBCUniversal Media LLC [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Adjusted EBITDA	2,311	2,160	4,658	4,445
Depreciation	(253)	(258)	(496)	(500)
Amortization	(274)	(295)	(546)	(563)
Interest expense	(122)	(133)	(253)	(260)
Investment and other income (loss), net	40	(168)	280	(172)
Income before income taxes	$ 1,702	$ 1,306	$ 3,643	$ 2,950

Revenue (Details)

Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Revenue	$ 26,858	$ 21,735	$ 53,717	$ 44,526
Cable Communications [Member]
Disaggregation of Revenue [Line Items]
Revenue	14,450	13,912	28,730	27,615
Cable Communications [Member] | Residential, High-Speed Internet [Member]
Disaggregation of Revenue [Line Items]
Revenue	4,663	4,262	9,240	8,419
Cable Communications [Member] | Residential, Video [Member]
Disaggregation of Revenue [Line Items]
Revenue	5,594	5,628	11,222	11,287
Cable Communications [Member] | Residential, Voice [Member]
Disaggregation of Revenue [Line Items]
Revenue	982	994	1,972	2,000
Cable Communications [Member] | Residential, Wireless [Member]
Disaggregation of Revenue [Line Items]
Revenue	244	202	469	387
Cable Communications [Member] | Business Services [Member]
Disaggregation of Revenue [Line Items]
Revenue	1,933	1,761	3,824	3,487
Cable Communications [Member] | Advertising [Member]
Disaggregation of Revenue [Line Items]
Revenue	607	666	1,163	1,248
Cable Communications [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Revenue	$ 427	$ 399	$ 840	$ 787
Cable Communications [Member] | Franchise And Other Regulatory Fees [Member]
Disaggregation of Revenue [Line Items]
Cable segment revenue types as percentage of total cable revenue	2.50%	2.70%	2.50%	2.70%
Cable Networks [Member]
Disaggregation of Revenue [Line Items]
Revenue	$ 2,947	$ 2,874	$ 5,815	$ 6,031
Cable Networks [Member] | Distribution [Member]
Disaggregation of Revenue [Line Items]
Revenue	1,707	1,650	3,442	3,511
Cable Networks [Member] | Advertising [Member]
Disaggregation of Revenue [Line Items]
Revenue	931	929	1,783	1,906
Cable Networks [Member] | Content Licensing And Other [Member]
Disaggregation of Revenue [Line Items]
Revenue	309	295	590	614
Broadcast Television [Member]
Disaggregation of Revenue [Line Items]
Revenue	2,402	2,391	4,869	5,888
Broadcast Television [Member] | Advertising [Member]
Disaggregation of Revenue [Line Items]
Revenue	1,329	1,387	2,646	3,752
Broadcast Television [Member] | Content Licensing [Member]
Disaggregation of Revenue [Line Items]
Revenue	472	481	1,032	1,003
Broadcast Television [Member] | Distribution And Other [Member]
Disaggregation of Revenue [Line Items]
Revenue	601	523	1,191	1,133
Filmed Entertainment [Member]
Disaggregation of Revenue [Line Items]
Revenue	1,457	1,710	3,225	3,357
Filmed Entertainment [Member] | Content Licensing [Member]
Disaggregation of Revenue [Line Items]
Revenue	712	648	1,529	1,381
Filmed Entertainment [Member] | Theatrical [Member]
Disaggregation of Revenue [Line Items]
Revenue	252	540	697	963
Filmed Entertainment [Member] | Home Entertainment [Member]
Disaggregation of Revenue [Line Items]
Revenue	229	225	496	473
Filmed Entertainment [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Revenue	264	297	503	540
Theme Parks [Member]
Disaggregation of Revenue [Line Items]
Revenue	1,464	1,361	2,740	2,642
NBCUniversal Segments [Member]
Disaggregation of Revenue [Line Items]
Revenue	8,206	8,273	16,519	17,770
Sky Limited [Member]
Disaggregation of Revenue [Line Items]
Revenue	4,828	0	9,625	0
Sky Limited [Member] | Advertising [Member]
Disaggregation of Revenue [Line Items]
Revenue	563	0	1,156	0
Sky Limited [Member] | Direct To Consumer [Member]
Disaggregation of Revenue [Line Items]
Revenue	3,889	0	7,723	0
Sky Limited [Member] | Content [Member]
Disaggregation of Revenue [Line Items]
Revenue	376	0	746	0
Corporate, Non-Segment [Member]
Disaggregation of Revenue [Line Items]
Revenue	56	96	164	339
Corporate, Non-Segment [Member] | NBCUniversal Segments [Member]
Disaggregation of Revenue [Line Items]
Revenue	22	15	39	29
Eliminations [Member]
Disaggregation of Revenue [Line Items]
Revenue	(682)	(546)	(1,321)	(1,198)
Eliminations [Member] | NBCUniversal Segments [Member]
Disaggregation of Revenue [Line Items]
Revenue	(86)	(78)	(169)	(177)
NBCUniversal Media LLC [Member]
Disaggregation of Revenue [Line Items]
Revenue	8,227	8,313	16,572	17,843
NBCUniversal Media LLC [Member] | Cable Networks [Member]
Disaggregation of Revenue [Line Items]
Revenue	2,947	2,874	5,815	6,031
NBCUniversal Media LLC [Member] | Cable Networks [Member] | Distribution [Member]
Disaggregation of Revenue [Line Items]
Revenue	1,707	1,650	3,442	3,511
NBCUniversal Media LLC [Member] | Cable Networks [Member] | Advertising [Member]
Disaggregation of Revenue [Line Items]
Revenue	931	929	1,783	1,906
NBCUniversal Media LLC [Member] | Cable Networks [Member] | Content Licensing And Other [Member]
Disaggregation of Revenue [Line Items]
Revenue	309	295	590	614
NBCUniversal Media LLC [Member] | Broadcast Television [Member]
Disaggregation of Revenue [Line Items]
Revenue	2,402	2,391	4,869	5,888
NBCUniversal Media LLC [Member] | Broadcast Television [Member] | Advertising [Member]
Disaggregation of Revenue [Line Items]
Revenue	1,329	1,387	2,646	3,752
NBCUniversal Media LLC [Member] | Broadcast Television [Member] | Content Licensing [Member]
Disaggregation of Revenue [Line Items]
Revenue	472	481	1,032	1,003
NBCUniversal Media LLC [Member] | Broadcast Television [Member] | Distribution And Other [Member]
Disaggregation of Revenue [Line Items]
Revenue	601	523	1,191	1,133
NBCUniversal Media LLC [Member] | Filmed Entertainment [Member]
Disaggregation of Revenue [Line Items]
Revenue	1,457	1,710	3,225	3,357
NBCUniversal Media LLC [Member] | Filmed Entertainment [Member] | Content Licensing [Member]
Disaggregation of Revenue [Line Items]
Revenue	712	648	1,529	1,381
NBCUniversal Media LLC [Member] | Filmed Entertainment [Member] | Theatrical [Member]
Disaggregation of Revenue [Line Items]
Revenue	252	540	697	963
NBCUniversal Media LLC [Member] | Filmed Entertainment [Member] | Home Entertainment [Member]
Disaggregation of Revenue [Line Items]
Revenue	229	225	496	473
NBCUniversal Media LLC [Member] | Filmed Entertainment [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Revenue	264	297	503	540
NBCUniversal Media LLC [Member] | Theme Parks [Member]
Disaggregation of Revenue [Line Items]
Revenue	1,464	1,361	2,740	2,642
NBCUniversal Media LLC [Member] | Corporate, Non-Segment [Member]
Disaggregation of Revenue [Line Items]
Revenue	45	57	96	108
NBCUniversal Media LLC [Member] | Eliminations [Member]
Disaggregation of Revenue [Line Items]
Revenue	$ (88)	$ (80)	$ (173)	$ (183)

Revenue (Revenue by Geographic

Revenue (Revenue by Geographic Location) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Revenue	$ 26,858	$ 21,735	$ 53,717	$ 44,526
United States [Member]
Disaggregation of Revenue [Line Items]
Revenue	20,539	19,931	40,996	40,816
Europe [Member]
Disaggregation of Revenue [Line Items]
Revenue	5,297	699	10,667	1,520
Other [Member]
Disaggregation of Revenue [Line Items]
Revenue	1,022	1,105	2,054	2,190
NBCUniversal Media LLC [Member]
Disaggregation of Revenue [Line Items]
Revenue	8,227	8,313	16,572	17,843
NBCUniversal Media LLC [Member] | United States [Member]
Disaggregation of Revenue [Line Items]
Revenue	6,669	6,533	13,292	14,187
NBCUniversal Media LLC [Member] | Foreign [Member]
Disaggregation of Revenue [Line Items]
Revenue	$ 1,558	$ 1,780	$ 3,280	$ 3,656

Revenue (Condensed Consolidated

Revenue (Condensed Consolidated Balance Sheet) (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Condensed Consolidated Balance Sheet [Line Items]
Receivables, gross	$ 11,381	$ 11,456
Less: Allowance for doubtful accounts	546	352
Receivables, net	10,835	11,104
Noncurrent receivables, net (included in other noncurrent assets, net)	1,306	1,399
Contract acquisition and fulfillment costs (included in other noncurrent assets, net)	1,037	991
Noncurrent deferred revenue (included in other noncurrent liabilities)	888	650
NBCUniversal Media LLC [Member]
Condensed Consolidated Balance Sheet [Line Items]
Receivables, gross	7,304	7,392
Less: Allowance for doubtful accounts	110	99
Receivables, net	7,194	7,293
Noncurrent receivables, net (included in other noncurrent assets, net)	1,181	1,180
Noncurrent deferred revenue (included in other noncurrent liabilities)	$ 657	$ 481

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Earnings Per Share [Abstract]
Net Income Attributable to Comcast Corporation	$ 3,125	$ 3,216	$ 6,678	$ 6,334
Basic EPS attributable to Comcast Corporation shareholders (in shares)	4,547	4,598	4,540	4,616
Basic earnings per common share attributable to Comcast Corporation shareholders (in dollars per share)	$ 0.69	$ 0.70	$ 1.47	$ 1.37
Effect of dilutive securities:
Net Income Attributable to Comcast Corporation	$ 3,125	$ 3,216	$ 6,678	$ 6,334
Assumed exercise or issuance of shares relating to stock plans (in shares)	60	45	60	58
Diluted EPS attributable to Comcast Corporation shareholders (in shares)	4,607	4,643	4,600	4,674
Diluted earnings per common share attributable to Comcast Corporation shareholders (in dollars per share)	$ 0.68	$ 0.69	$ 1.45	$ 1.36

Long-Term Debt (Narrative) (Det

Long-Term Debt (Narrative) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Debt Instrument [Line Items]
Total carrying value of debt	$ 107,600
Total fair value of debt	118,500
Borrowings	363	$ 4,279
Repayments of debt	4,156	4,347
NBCUniversal Media LLC [Member]
Debt Instrument [Line Items]
Total carrying value of debt	13,400
Total fair value of debt	14,200
Borrowings	426	245
Repayments of debt	91	$ 332
Universal Beijing Resort Term Loans [Member]
Debt Instrument [Line Items]
Borrowings	363
Universal Beijing Resort Term Loans [Member] | NBCUniversal Media LLC [Member]
Debt Instrument [Line Items]
Borrowings	363
Universal Studios Japan Term Loans Maturing 2022 [Member] | NBCUniversal Media LLC [Member]
Debt Instrument [Line Items]
Repayments of debt	$ 73

Long-Term Debt (Revolving Credi

Long-Term Debt (Revolving Credit Facilities) (Details) £ in Billions	6 Months Ended
	Jun. 30, 2019USD ($)	Feb. 28, 2019GBP (£)
Sky Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Net repayments of credit facility	$ 615,000,000
Credit facility terminated | £		£ 1
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Amount outstanding under credit facility	0
Amounts available under revolving credit facilities	$ 8,700,000,000

Long-Term Debt (Commercial Pape

Long-Term Debt (Commercial Paper Programs) (Details)	6 Months Ended
	Jun. 30, 2019USD ($)
Short-term Debt [Line Items]
Net repayments of commercial paper	$ 186,000,000
Commercial Paper [Member]
Short-term Debt [Line Items]
Commercial paper outstanding	488,000,000
NBCUniversal Enterprise [Member] | Commercial Paper [Member]
Short-term Debt [Line Items]
Commercial paper outstanding	$ 0

Long-Term Debt (Guarantee Struc

Long-Term Debt (Guarantee Structure) (Details) $ in Millions, ¥ in Billions, ¥ in Billions	Jun. 30, 2019USD ($)	Jun. 30, 2019JPY (¥)	Jun. 30, 2019CNY (¥)
Guarantor Subsidiaries [Member]
Debt Instrument [Line Items]
Principal amount of debt securities subject to guarantee	$ 92,100
NBCUniversal Enterprise Debt Securities [Member]
Debt Instrument [Line Items]
Principal amount of debt securities subject to guarantee	1,500
Universal Studios Japan Term Loans Maturing March 2022 [Member]
Debt Instrument [Line Items]
Principal amount of debt securities subject to guarantee	3,500	¥ 382
Universal Beijing Resort Term Loans [Member]
Debt Instrument [Line Items]
Principal amount of debt securities not subject to guarantee	936		¥ 6.4
Sky Senior Notes [Member]
Debt Instrument [Line Items]
Principal amount of debt securities subject to guarantee	$ 10,000
NBCUniversal Media LLC [Member]
Debt Instrument [Line Items]
Ownership in cable holding company subsidiaries	100.00%	100.00%	100.00%
NBCUniversal Media LLC [Member] | NBCUniversal Enterprise [Member]
Debt Instrument [Line Items]
Related party aggregate principal amount debt securities not subject to guarantee	$ 1,500
Related party liquidation preference preferred stock not subject to guarantee	725
NBCUniversal Media LLC [Member] | Comcast and Comcast Cable Debt Securities [Member]
Debt Instrument [Line Items]
Principal amount of debt securities subject to guarantee	84,400
NBCUniversal Media LLC [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Guarantee obligations, maximum capacity of credit facility	$ 7,600

Significant Transactions (Sky T

Significant Transactions (Sky Transaction) (Details) - Sky Limited [Member] £ / shares in Units, $ in Millions, £ in Billions	Oct. 09, 2018USD ($)	Oct. 09, 2018GBP (£)	Mar. 31, 2019USD ($)	Oct. 09, 2018£ / shares
Business Acquisition [Line Items]
Shares acquired, share price (in gbp per share) | £ / shares				£ 17.28
Percentage of voting interests acquired in period	100.00%	100.00%
Cash consideration	$ 39,387	£ 30.2
Deferred tax assets related to net operating losses			$ 1,200
Goodwill purchase accounting adjustment			1,400
Incremental depreciation and amortization			$ 53
Property and equipment	4,127
Trade Names [Member]
Business Acquisition [Line Items]
Indefinite-lived intangible assets acquired	5,800
Customer Relationships [Member]
Business Acquisition [Line Items]
Finite-lived intangible assets acquired	$ 9,500
Customer Relationships [Member] | Minimum [Member]
Business Acquisition [Line Items]
Estimated weighted average useful life	6 years	6 years
Customer Relationships [Member] | Maximum [Member]
Business Acquisition [Line Items]
Estimated weighted average useful life	19 years	19 years
Developed Technology and Software [Member]
Business Acquisition [Line Items]
Finite-lived intangible assets acquired	$ 4,300
Developed Technology and Software [Member] | Minimum [Member]
Business Acquisition [Line Items]
Estimated weighted average useful life	4 years	4 years
Developed Technology and Software [Member] | Maximum [Member]
Business Acquisition [Line Items]
Estimated weighted average useful life	9 years	9 years
Customer Premise Equipment [Member]
Business Acquisition [Line Items]
Property and equipment	$ 1,400
Customer Premise Equipment [Member] | Minimum [Member]
Business Acquisition [Line Items]
Estimated useful lives	5 years	5 years
Customer Premise Equipment [Member] | Maximum [Member]
Business Acquisition [Line Items]
Estimated useful lives	7 years	7 years

Significant Transactions (Alloc

Significant Transactions (Allocation of Purchase Price) (Details) - Oct. 09, 2018 - Sky Limited [Member] $ in Millions, £ in Billions	USD ($)	GBP (£)
Business Acquisition [Line Items]
Consideration transferred	$ 39,387	£ 30.2
Cash	1,283
Accounts receivable and other current assets	2,359
Film and television costs	2,512
Property and equipment	4,127
Intangible assets	19,539
Accounts payable, accrued liabilities and other current liabilities	(5,885)
Long-term debt	(11,468)
Deferred tax assets (liabilities), net	(2,974)
Other noncurrent assets and (liabilities), net	(1,398)
Fair value of identifiable net assets acquired	8,095
Goodwill	$ 31,292

Significant Transactions (Acqui

Significant Transactions (Acquisition-Related Expenses) (Details) - Sky Limited [Member] - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2018
Business Acquisition [Line Items]
Other operating and administrative expenses	$ 11	$ 21
Interest expense	$ 11	$ 11

Significant Transactions (Unaud

Significant Transactions (Unaudited Pro Forma Information) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2018
Business Combinations [Abstract]
Revenue	$ 26,653	$ 54,415
Net income attributable to Comcast Corporation	$ 2,957	$ 5,940
Basic earnings per common share attributable to Comcast Corporation shareholders (in dollars per share)	$ 0.65	$ 1.29
Diluted earnings per common share attributable to Comcast Corporation shareholders (in dollars per share)	$ 0.64	$ 1.27

Significant Transactions (Unive

Significant Transactions (Universal Beijing Resort) (Details) $ in Millions, ¥ in Billions	Jun. 30, 2019USD ($)	Jun. 30, 2019CNY (¥)
Universal Beijing Resort [Member]
Variable Interest Entity [Line Items]
Ownership percentage in variable interest entity	30.00%	30.00%
Maximum borrowing capacity of variable interest entity	$ 4,000	¥ 26.6
Consolidated variable interest entity's assets included in condensed consolidated balance sheet	2,100
Consolidated variable interest entity's liabilities included in condensed consolidated balance sheet	$ 1,500
NBCUniversal Media LLC [Member] | Universal Beijing Resort [Member]
Variable Interest Entity [Line Items]
Ownership percentage in variable interest entity	30.00%	30.00%
Maximum borrowing capacity of variable interest entity	$ 4,000	¥ 26.6
Consolidated variable interest entity's assets included in condensed consolidated balance sheet	2,100
Consolidated variable interest entity's liabilities included in condensed consolidated balance sheet	1,500
NBCUniversal Media LLC [Member] | Universal Beijing Resort term loans [Member]
Variable Interest Entity [Line Items]
Proceeds from borrowings	936
Universal Beijing Resort term loans [Member]
Variable Interest Entity [Line Items]
Proceeds from borrowings	$ 936

Recent Accounting Pronounceme_3

Recent Accounting Pronouncements (Narrative) (Details) - USD ($) $ in Millions	Jun. 30, 2019	Jan. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease liabilities	$ 4,661
NBCUniversal Media LLC [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease liabilities	$ 1,701
Accounting Standards Update 2016-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease assets		$ 4,200
Operating lease liabilities		4,800
Finance lease liabilities		787
Accounting Standards Update 2016-02 [Member] | Sky Limited [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Additional finance lease liability		229
Accounting Standards Update 2016-02 [Member] | NBCUniversal Media LLC [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease assets		1,700
Operating lease liabilities		1,800
Finance lease liabilities		$ 332

Film and Television Costs (Film

Film and Television Costs (Film and Television Costs) (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Film Costs:
Released, less amortization	$ 1,577	$ 1,600
Completed, not released	86	144
In production and in development	1,376	1,063
Total film costs	3,039	2,807
Television Costs:
Released, less amortization	2,278	2,289
In production and in development	1,014	953
Total television costs	3,292	3,242
Programming rights, less amortization	4,169	5,534
Total film costs, television costs and programming rights	10,500	11,583
Less: Current portion of programming rights	1,947	3,746
Film and television costs	8,553	7,837
NBCUniversal Media LLC [Member]
Film Costs:
Released, less amortization	1,558	1,600
Completed, not released	86	144
In production and in development	1,376	1,063
Total film costs	3,020	2,807
Television Costs:
Released, less amortization	2,165	2,161
In production and in development	1,014	953
Total television costs	3,179	3,114
Programming rights, less amortization	2,553	2,694
Total film costs, television costs and programming rights	8,752	8,615
Less: Current portion of programming rights	1,156	1,323
Film and television costs	$ 7,596	$ 7,292

Investments (Investment and Oth

Investments (Investment and Other Income (Loss), Net) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Investment and Other Income (Loss), Net [Line Items]
Equity in net income (losses) of investees, net	$ (202)	$ 69	$ 60	$ 20
Realized and unrealized gains (losses) on equity securities, net	194	(40)	408	(12)
Other income (loss), net	(47)	48	153	195
Investment and other income (loss), net	(55)	77	621	203
NBCUniversal Media LLC [Member]
Investment and Other Income (Loss), Net [Line Items]
Equity in net income (losses) of investees, net	(91)	(87)	(211)	(187)
Realized and unrealized gains (losses) on equity securities, net	97	(74)	258	(37)
Other income (loss), net	34	(7)	233	52
Investment and other income (loss), net	$ 40	$ (168)	$ 280	$ (172)

Investments (Schedule of Invest

Investments (Schedule of Investments) (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Schedule of Investments [Line Items]
Equity method	$ 5,719	$ 4,035
Marketable equity securities	577	341
Nonmarketable equity securities	2,057	1,805
Other investments	1,803	1,796
Total investments	10,156	7,977
Less: Current investments	1,718	94
Noncurrent investments	8,438	7,883
NBCUniversal Media LLC [Member]
Schedule of Investments [Line Items]
Equity method	1,342	707
Marketable equity securities	420	162
Nonmarketable equity securities	916	811
Total investments	2,678	1,680
Noncurrent investments	$ 2,678	$ 1,680

Investments (Equity Method Inve

Investments (Equity Method Investments) (Details) - USD ($)	1 Months Ended		3 Months Ended			6 Months Ended
	May 31, 2019	Mar. 31, 2018	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Apr. 30, 2019	Dec. 31, 2018	Aug. 31, 2016	Jul. 31, 2016
Schedule of Equity Method Investments [Line Items]
Equity in net income (losses) of investees, net			$ (202,000,000)		$ 69,000,000	$ 60,000,000	$ 20,000,000
Equity method investments			5,719,000,000			5,719,000,000			$ 4,035,000,000
Atairos [Member]
Schedule of Equity Method Investments [Line Items]
Pretax gain, sale of business to Atairos					200,000,000		200,000,000
Atairos [Member]
Schedule of Equity Method Investments [Line Items]
Equity in net income (losses) of investees, net			(106,000,000)		151,000,000	268,000,000	186,000,000
Cash capital contributions for equity method investments						463,000,000	112,000,000
Equity method investments			3,400,000,000			3,400,000,000			2,700,000,000
Hulu [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage	33.00%							30.00%		30.00%	33.00%
Cash capital contributions for equity method investments	$ 477,000,000					903,000,000	227,000,000
Maximum total capital call in annual period	$ 1,500,000,000
Ownership percentage floor	21.00%
Fair market value assessment floor for put and call option	$ 27,500,000,000
Ownership percentage representing fair market value floor for put and call option	100.00%
Minimum guaranteed proceeds floor for put and call option	$ 5,800,000,000
Recognition of previously deferred gain				$ 159,000,000
Equity in net income (losses) of investees, net			(109,000,000)		(107,000,000)	(250,000,000)	(238,000,000)
Equity method investments			857,000,000			857,000,000			248,000,000
Hulu [Member] | Time Warner, Inc. [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage										10.00%
Hulu [Member] | AT&T Inc. [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage	10.00%
The Weather Channel [Member]
Schedule of Equity Method Investments [Line Items]
Pretax gain on sale of investment		$ 64,000,000
NBCUniversal Media LLC [Member]
Schedule of Equity Method Investments [Line Items]
Equity in net income (losses) of investees, net			(91,000,000)		(87,000,000)	(211,000,000)	(187,000,000)
Equity method investments			1,342,000,000			1,342,000,000			707,000,000
NBCUniversal Media LLC [Member] | Hulu [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage	33.00%							30.00%		30.00%	33.00%
Cash capital contributions for equity method investments	$ 477,000,000					903,000,000	227,000,000
Maximum total capital call in annual period	$ 1,500,000,000
Ownership percentage floor	21.00%
Fair market value assessment floor for put and call option	$ 27,500,000,000
Ownership percentage representing fair market value floor for put and call option	100.00%
Minimum guaranteed proceeds floor for put and call option	$ 5,800,000,000
Recognition of previously deferred gain				$ 159,000,000
Equity in net income (losses) of investees, net			(109,000,000)		$ (107,000,000)	(250,000,000)	$ (238,000,000)
Equity method investments			$ 857,000,000			$ 857,000,000			$ 248,000,000
NBCUniversal Media LLC [Member] | Hulu [Member] | Time Warner, Inc. [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage										10.00%
NBCUniversal Media LLC [Member] | Hulu [Member] | AT&T Inc. [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage	10.00%
NBCUniversal Media LLC [Member] | The Weather Channel [Member]
Schedule of Equity Method Investments [Line Items]
Pretax gain on sale of investment		$ 64,000,000

Investments (Marketable Equity

Investments (Marketable Equity Securities) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Schedule of Marketable Equity Securities [Line Items]
Marketable equity securities	$ 577		$ 577		$ 341
NBCUniversal Media LLC [Member]
Schedule of Marketable Equity Securities [Line Items]
Marketable equity securities	420		420		162
Snap [Member]
Schedule of Marketable Equity Securities [Line Items]
Marketable equity securities, recognized unrealized gains (losses)	96	$ (82)	258	$ (45)
Marketable equity securities	420		420		162
Snap [Member] | NBCUniversal Media LLC [Member]
Schedule of Marketable Equity Securities [Line Items]
Marketable equity securities, recognized unrealized gains (losses)	96	$ (82)	258	$ (45)
Marketable equity securities	$ 420		$ 420		$ 162

Investments (Other Investments)

Investments (Other Investments) (Details) $ in Billions	Jun. 30, 2019USD ($)preferred_stock_series	Dec. 31, 2018USD ($)
AirTouch [Member]
Schedule of Other Investments [Line Items]
Number of series of preferred stock | preferred_stock_series	2
Held to maturity investment	$ 1.6	$ 1.6
AirTouch [Member] | Level 2 [Member]
Schedule of Other Investments [Line Items]
Fair value of held to maturity investment redeemable preferred shares	1.7
AirTouch [Member] | Level 2 [Member]
Schedule of Other Investments [Line Items]
Fair value of redeemable preferred shares	$ 1.7

Supplemental Financial Inform_3

Supplemental Financial Information (Leases Narrative) (Details) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2019USD ($)	Jun. 30, 2019USD ($)
Lessee, Lease, Description [Line Items]
Operating lease expense inclusive of short-term and variable lease expenses	$ 264	$ 538
Weighted average remaining lease term for operating leases	10 years	10 years
Weighted average discount rate used to calculate operating lease liabilities	3.85%	3.85%
Cash payments for operating leases		$ 446
NBCUniversal Media LLC [Member]
Lessee, Lease, Description [Line Items]
Operating lease expense inclusive of short-term and variable lease expenses	$ 110	$ 221
Weighted average remaining lease term for operating leases	15 years	15 years
Weighted average discount rate used to calculate operating lease liabilities	4.11%	4.11%
Cash payments for operating leases		$ 132

Supplemental Financial Inform_4

Supplemental Financial Information (Summary of Operating Lease Assets and Liabilities Recorded in the Consolidated Balance Sheets) (Details) - Accounting Standards Update 2016-02 [Member] - USD ($) $ in Millions	Jun. 30, 2019	Jan. 01, 2019
Lessee, Lease, Description [Line Items]
Operating lease assets		$ 4,200
Other Noncurrent Assets, Net [Member]
Lessee, Lease, Description [Line Items]
Operating lease assets	$ 4,063
Accrued Expenses and Other Current Liabilities [Member]
Lessee, Lease, Description [Line Items]
Operating lease liabilities, current	685
Other Noncurrent Liabilities [Member]
Lessee, Lease, Description [Line Items]
Operating lease liabilities, noncurrent	3,976
NBCUniversal Media LLC [Member]
Lessee, Lease, Description [Line Items]
Operating lease assets		$ 1,700
NBCUniversal Media LLC [Member] | Other Noncurrent Assets, Net [Member]
Lessee, Lease, Description [Line Items]
Operating lease assets	1,591
NBCUniversal Media LLC [Member] | Accrued Expenses and Other Current Liabilities [Member]
Lessee, Lease, Description [Line Items]
Operating lease liabilities, current	166
NBCUniversal Media LLC [Member] | Other Noncurrent Liabilities [Member]
Lessee, Lease, Description [Line Items]
Operating lease liabilities, noncurrent	$ 1,535

Supplemental Financial Inform_5

Supplemental Financial Information (Summary of Future Minimum Rental Commitments for Operating Leases Under New Accounting Guidance) (Details) $ in Millions	Jun. 30, 2019USD ($)
Lessee, Lease, Description [Line Items]
Remaining six months of 2019	$ 431
2020	856
2021	743
2022	609
2023	514
Thereafter	2,591
Total future minimum lease payments	5,744
Less: imputed interest	1,083
Total liability	4,661
NBCUniversal Media LLC [Member]
Lessee, Lease, Description [Line Items]
Remaining six months of 2019	117
2020	250
2021	217
2022	179
2023	154
Thereafter	1,452
Total future minimum lease payments	2,369
Less: imputed interest	668
Total liability	$ 1,701

Supplemental Financial Inform_6

Supplemental Financial Information (Summary of Future Minimum Rental Commitments and Rent Expense for Operating Leases Under Previous Accounting Guidance) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2018	Dec. 31, 2018
Commitment And Contingencies [Line Items]
2019			$ 891
2020			824
2021			722
2022			592
2023			513
Thereafter			2,608
Rental expense	$ 184	$ 370
NBCUniversal Media LLC [Member]
Commitment And Contingencies [Line Items]
2019			248
2020			232
2021			199
2022			168
2023			144
Thereafter			$ 1,380
Rental expense	$ 74	$ 143

Supplemental Financial Inform_7

Supplemental Financial Information (Share-Based Compensation) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	1 Months Ended	3 Months Ended		6 Months Ended
	Mar. 31, 2019	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognized share-based compensation expense		$ 245	$ 168	$ 428	$ 307
Restricted share units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognized share-based compensation expense		167	102	294	185
Unrecognized pretax compensation expense on nonvested awards		1,400		1,400
Stock options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognized share-based compensation expense		72	61	119	105
Unrecognized pretax compensation expense on nonvested awards		594		594
Employee stock purchase plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognized share-based compensation expense		$ 6	$ 5	$ 15	$ 17
Management Grant [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock options granted (in shares)	41.9
Weighted-average fair value of stock options granted (in dollars per share)	$ 7.91
Management Grant [Member] | Restricted share units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted share units granted (in shares)	12.4
Weighted-average fair value of restricted share units granted (in dollars per share)	$ 39.88

Supplemental Financial Inform_8

Supplemental Financial Information (Cash Payments for Interest and Income Taxes) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash Payments for Interest and Income Taxes
Interest	$ 2,111	$ 1,354
Income taxes	1,634	623
NBCUniversal Media LLC [Member]
Cash Payments for Interest and Income Taxes
Interest	217	218
Income taxes	$ 163	$ 225

Supplemental Financial Inform_9

Supplemental Financial Information (Noncash Activities) (Details) $ / shares in Units, $ in Millions	6 Months Ended
	Jun. 30, 2019USD ($)$ / shares
Supplemental Financial Information [Line Items]
Property and equipment and intangible assets accrued but not yet paid	$ 1,600
Dividends payable	$ 955
Dividends payable (in dollars per share) | $ / shares	$ 0.21
NBCUniversal Media LLC [Member]
Supplemental Financial Information [Line Items]
Property and equipment and intangible assets accrued but not yet paid	$ 696

Supplemental Financial Infor_10

Supplemental Financial Information (Cash, Cash Equivalents and Restricted Cash) (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018	Dec. 31, 2017
Supplemental Financial Information [Line Items]
Cash and cash equivalents	$ 3,919	$ 3,814
Restricted cash included in other current assets	79	46
Restricted cash included in other noncurrent assets, net	21	49
Cash, cash equivalents and restricted cash, end of period	4,019	3,909	$ 5,842	$ 3,571
NBCUniversal Media LLC [Member]
Supplemental Financial Information [Line Items]
Cash and cash equivalents	1,244	1,444
Restricted cash included in other noncurrent assets, net	20	20
Cash, cash equivalents and restricted cash, end of period	$ 1,264	$ 1,464	$ 1,314	$ 2,377

Supplemental Financial Infor_11

Supplemental Financial Information (Components of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Unrealized gains (losses) on marketable securities	$ 5		$ 0
Deferred gains (losses) on cash flow hedges	132		26
Unrecognized gains (losses) on employee benefit obligations	309		302
Cumulative translation adjustments	(508)		133
Accumulated other comprehensive income (loss), net of deferred taxes	(62)	$ (368)	461
NBCUniversal Media LLC [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Deferred gains (losses) on cash flow hedges	9		8
Unrecognized gains (losses) on employee benefit obligations	135		119
Cumulative translation adjustments	151		91
Accumulated other comprehensive income (loss), net of deferred taxes	$ 295	$ 254	$ 218

Related Party Transactions (Nar

Related Party Transactions (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Related Party Transaction [Line Items]
Other noncurrent liabilities	$ 17,144		$ 17,144		$ 15,329
Recognized share-based compensation expense	245	$ 168	428	$ 307
NBCUniversal Media LLC [Member]
Related Party Transaction [Line Items]
Other noncurrent liabilities	6,668		6,668		$ 5,177
Recognized share-based compensation expense	57	$ 46	96	$ 78
Carrying Value of Related Party Contractual Obligation [Member] | NBCUniversal Media LLC [Member]
Related Party Transaction [Line Items]
Other noncurrent liabilities	$ 383		$ 383

Related Party Transactions (Con

Related Party Transactions (Condensed Consolidated Statement of Income) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Related Party Transaction [Line Items]
Revenue	$ 26,858	$ 21,735	$ 53,717	$ 44,526
Total costs and expenses	(21,502)	(16,721)	(43,179)	(34,867)
NBCUniversal Media LLC [Member]
Related Party Transaction [Line Items]
Revenue	8,227	8,313	16,572	17,843
Total costs and expenses	(6,443)	(6,706)	(12,956)	(14,461)
Comcast and Consolidated Subsidiaries [Member] | NBCUniversal Media LLC [Member]
Related Party Transaction [Line Items]
Revenue	607	480	1,211	1,074
Total costs and expenses	(60)	(42)	(125)	(103)
Interest expense and investment and other income (loss), net	$ 6	$ (20)	$ 14	$ (43)

Related Party Transactions (C_2

Related Party Transactions (Condensed Consolidated Balance Sheet) (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Related Party Transaction [Line Items]
Receivables, net	$ 10,835	$ 11,104
Film and television costs	3,292	3,242
Other noncurrent assets, net	8,770	5,802
Accounts payable and accrued expenses related to trade creditors	10,014	8,494
Accrued expenses and other current liabilities	10,304	10,721
Long-term debt, less current portion	101,248	107,345
Other noncurrent liabilities	17,144	15,329
NBCUniversal Media LLC [Member]
Related Party Transaction [Line Items]
Receivables, net	7,194	7,293
Note receivable from Comcast	2,534	2,054
Film and television costs	3,179	3,114
Other noncurrent assets, net	3,519	1,822
Accounts payable and accrued expenses related to trade creditors	1,985	1,933
Accrued expenses and other current liabilities	2,015	2,195
Note payable to Comcast	197	54
Long-term debt, less current portion	11,155	12,731
Other noncurrent liabilities	6,668	5,177
Comcast and Consolidated Subsidiaries [Member] | NBCUniversal Media LLC [Member]
Related Party Transaction [Line Items]
Receivables, net	484	464
Note receivable from Comcast	2,534	2,054
Film and television costs	27	27
Other noncurrent assets, net	70	0
Accounts payable and accrued expenses related to trade creditors	64	78
Accrued expenses and other current liabilities	42	32
Note payable to Comcast	197	54
Long-term debt, less current portion	768	701
Other noncurrent liabilities	$ 494	$ 410

Commitments and Contingencies_2

Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Commitment And Contingencies [Line Items]
Operating lease expense inclusive of short-term and variable lease expenses	$ 264		$ 538
Weighted average remaining lease term for operating leases	10 years		10 years
Weighted average discount rate used to calculate operating lease liabilities	3.85%		3.85%
Cash payments for operating leases			$ 446
Rental expense		$ 184		$ 370
Redeemable Subsidiary Preferred Stock [Member] | Level 2 [Member]
Commitment And Contingencies [Line Items]
Temporary equity, fair value of redeemable subsidiary preferred stock	$ 744		$ 744
Sky Limited [Member]
Commitment And Contingencies [Line Items]
Future cash payments related to additional contracts determined to be operating leases					$ 804

Commitments and Contingencies_3

Commitments and Contingencies (Summary of Operating Lease Assets and Liabilities Recorded in the Consolidated Balance Sheets) (Details) - Accounting Standards Update 2016-02 [Member] - USD ($) $ in Millions	Jun. 30, 2019	Jan. 01, 2019
Lessee, Lease, Description [Line Items]
Operating lease assets		$ 4,200
Other Noncurrent Assets, Net [Member]
Lessee, Lease, Description [Line Items]
Operating lease assets	$ 4,063
Accrued Expenses and Other Current Liabilities [Member]
Lessee, Lease, Description [Line Items]
Operating lease liabilities, current	685
Other Noncurrent Liabilities [Member]
Lessee, Lease, Description [Line Items]
Operating lease liabilities, noncurrent	$ 3,976

Commitments and Contingencies_4

Commitments and Contingencies (Summary of Future Minimum Rental Commitments for Operating Leases Under New Accounting Guidance) (Details) $ in Millions	Jun. 30, 2019USD ($)
Commitments and Contingencies Disclosure [Abstract]
Remaining six months of 2019	$ 431
2020	856
2021	743
2022	609
2023	514
Thereafter	2,591
Total future minimum lease payments	5,744
Less: imputed interest	1,083
Total liability	$ 4,661

Commitments and Contingencies_5

Commitments and Contingencies (Summary of Future Minimum Rental Commitments for Operating Leases Under Previous Accounting Guidance and Rent Expense) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2018	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
2019			$ 891
2020			824
2021			722
2022			592
2023			513
Thereafter			$ 2,608
Rental expense	$ 184	$ 370

Condensed Consolidating Finan_3

Condensed Consolidating Financial Information (Condensed Consolidating Statement of Income) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenue:
Revenue	$ 26,858	$ 21,735	$ 53,717	$ 44,526
Costs and Expenses:
Programming and production	8,255	6,300	16,824	13,729
Other operating and administrative	8,086	6,365	15,986	12,879
Advertising, marketing and promotion	1,885	1,653	3,773	3,257
Depreciation	2,197	2,021	4,437	4,032
Amortization	1,079	582	2,159	1,170
Other operating gains	0	(200)	0	(200)
Total costs and expenses	21,502	16,721	43,179	34,867
Operating income	5,356	5,014	10,538	9,659
Interest expense	(1,137)	(806)	(2,287)	(1,583)
Investment and other income (loss), net	(55)	77	621	203
Income before income taxes	4,164	4,285	8,872	8,279
Income tax (expense) benefit	(961)	(1,077)	(2,037)	(1,895)
Net income	3,203	3,208	6,835	6,384
Less: Net income (loss) attributable to noncontrolling interests and redeemable subsidiary preferred stock	78	(8)	157	50
Net income attributable to Comcast Corporation	3,125	3,216	6,678	6,334
Comprehensive income (loss) attributable to Comcast Corporation	2,641	3,069	6,984	6,340
Elimination and Consolidation Adjustments [Member]
Revenue:
Revenue	(612)	(591)	(1,216)	(1,169)
Costs and Expenses:
Programming and production	0	0	0	0
Other operating and administrative	(612)	(591)	(1,216)	(1,169)
Advertising, marketing and promotion	0	0	0	0
Depreciation	0	0	0	0
Amortization	0	0	0	0
Other operating gains		0		0
Total costs and expenses	(612)	(591)	(1,216)	(1,169)
Operating income	0	0	0	0
Interest expense	0	0	0	0
Investment and other income (loss), net	(14,430)	(13,012)	(29,845)	(26,081)
Income before income taxes	(14,430)	(13,012)	(29,845)	(26,081)
Income tax (expense) benefit	0	0	0	0
Net income	(14,430)	(13,012)	(29,845)	(26,081)
Less: Net income (loss) attributable to noncontrolling interests and redeemable subsidiary preferred stock	0	0	0	0
Net income attributable to Comcast Corporation	(14,430)	(13,012)	(29,845)	(26,081)
Comprehensive income (loss) attributable to Comcast Corporation	(14,042)	(12,459)	(30,351)	(26,104)
Comcast Parent [Member] | Reportable Legal Entities [Member]
Revenue:
Revenue	309	298	614	590
Costs and Expenses:
Programming and production	0	0	0	0
Other operating and administrative	178	190	366	418
Advertising, marketing and promotion	0	0	0	0
Depreciation	16	11	30	22
Amortization	2	2	3	3
Other operating gains		0		0
Total costs and expenses	196	203	399	443
Operating income	113	95	215	147
Interest expense	(877)	(578)	(1,773)	(1,139)
Investment and other income (loss), net	3,692	3,597	7,907	7,117
Income before income taxes	2,928	3,114	6,349	6,125
Income tax (expense) benefit	197	102	329	209
Net income	3,125	3,216	6,678	6,334
Less: Net income (loss) attributable to noncontrolling interests and redeemable subsidiary preferred stock	0	0	0	0
Net income attributable to Comcast Corporation	3,125	3,216	6,678	6,334
Comprehensive income (loss) attributable to Comcast Corporation	2,641	3,069	6,984	6,340
Non-Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]
Revenue:
Revenue	26,858	21,735	53,717	44,526
Costs and Expenses:
Programming and production	8,255	6,300	16,824	13,729
Other operating and administrative	7,992	6,249	15,738	12,509
Advertising, marketing and promotion	1,885	1,653	3,773	3,257
Depreciation	2,181	2,010	4,407	4,010
Amortization	1,077	580	2,156	1,167
Other operating gains		(200)		(200)
Total costs and expenses	21,390	16,592	42,898	34,472
Operating income	5,468	5,143	10,819	10,054
Interest expense	(93)	(64)	(175)	(124)
Investment and other income (loss), net	1,659	1,324	3,897	2,912
Income before income taxes	7,034	6,403	14,541	12,842
Income tax (expense) benefit	(1,162)	(1,185)	(2,368)	(2,114)
Net income	5,872	5,218	12,173	10,728
Less: Net income (loss) attributable to noncontrolling interests and redeemable subsidiary preferred stock	78	(8)	157	50
Net income attributable to Comcast Corporation	5,794	5,226	12,016	10,678
Comprehensive income (loss) attributable to Comcast Corporation	5,300	4,903	12,460	10,694
Comcast Holdings [Member] | Subsidiary Issuer [Member] | Reportable Legal Entities [Member]
Revenue:
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
Other operating gains		0		0
Total costs and expenses	0	0	0	0
Operating income	0	0	0	0
Interest expense	(3)	(3)	(6)	(6)
Investment and other income (loss), net	3,730	3,580	7,873	6,899
Income before income taxes	3,727	3,577	7,867	6,893
Income tax (expense) benefit	(1)	1	(7)	1
Net income	3,726	3,578	7,860	6,894
Less: Net income (loss) attributable to noncontrolling interests and redeemable subsidiary preferred stock	0	0	0	0
Net income attributable to Comcast Corporation	3,726	3,578	7,860	6,894
Comprehensive income (loss) attributable to Comcast Corporation	3,756	3,527	7,878	6,896
CCCL Parent [Member] | Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]
Revenue:
Revenue	303	293	602	579
Costs and Expenses:
Programming and production	0	0	0	0
Other operating and administrative	303	293	602	579
Advertising, marketing and promotion	0	0	0	0
Depreciation	0	0	0	0
Amortization	0	0	0	0
Other operating gains		0		0
Total costs and expenses	303	293	602	579
Operating income	0	0	0	0
Interest expense	(47)	(48)	(96)	(95)
Investment and other income (loss), net	3,376	2,999	6,690	5,825
Income before income taxes	3,329	2,951	6,594	5,730
Income tax (expense) benefit	10	10	20	19
Net income	3,339	2,961	6,614	5,749
Less: Net income (loss) attributable to noncontrolling interests and redeemable subsidiary preferred stock	0	0	0	0
Net income attributable to Comcast Corporation	3,339	2,961	6,614	5,749
Comprehensive income (loss) attributable to Comcast Corporation	3,342	2,960	6,617	5,749
NBCUniversal Media Parent [Member] | Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]
Revenue:
Revenue	0	0	0	0
Costs and Expenses:
Programming and production	0	0	0	0
Other operating and administrative	225	224	496	542
Advertising, marketing and promotion	0	0	0	0
Depreciation	0	0	0	0
Amortization	0	0	0	0
Other operating gains		0		0
Total costs and expenses	225	224	496	542
Operating income	(225)	(224)	(496)	(542)
Interest expense	(117)	(113)	(237)	(219)
Investment and other income (loss), net	1,918	1,589	4,099	3,531
Income before income taxes	1,576	1,252	3,366	2,770
Income tax (expense) benefit	(5)	(5)	(11)	(10)
Net income	1,571	1,247	3,355	2,760
Less: Net income (loss) attributable to noncontrolling interests and redeemable subsidiary preferred stock	0	0	0	0
Net income attributable to Comcast Corporation	1,571	1,247	3,355	2,760
Comprehensive income (loss) attributable to Comcast Corporation	1,644	1,069	3,396	2,765
Service [Member]
Revenue:
Revenue	26,858	21,735	53,717	44,526
Service [Member] | Elimination and Consolidation Adjustments [Member]
Revenue:
Revenue	0	0	0	0
Service [Member] | Comcast Parent [Member] | Reportable Legal Entities [Member]
Revenue:
Revenue	0	0	0	0
Service [Member] | Non-Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]
Revenue:
Revenue	26,858	21,735	53,717	44,526
Service [Member] | Comcast Holdings [Member] | Subsidiary Issuer [Member] | Reportable Legal Entities [Member]
Revenue:
Revenue	0	0	0	0
Service [Member] | CCCL Parent [Member] | Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]
Revenue:
Revenue	0	0	0	0
Service [Member] | NBCUniversal Media Parent [Member] | Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]
Revenue:
Revenue	0	0	0	0
Management Fee [Member]
Revenue:
Revenue	0	0	0	0
Management Fee [Member] | Elimination and Consolidation Adjustments [Member]
Revenue:
Revenue	(612)	(591)	(1,216)	(1,169)
Management Fee [Member] | Comcast Parent [Member] | Reportable Legal Entities [Member]
Revenue:
Revenue	309	298	614	590
Management Fee [Member] | Non-Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]
Revenue:
Revenue	0	0	0	0
Management Fee [Member] | Comcast Holdings [Member] | Subsidiary Issuer [Member] | Reportable Legal Entities [Member]
Revenue:
Revenue	0	0	0	0
Management Fee [Member] | CCCL Parent [Member] | Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]
Revenue:
Revenue	303	293	602	579
Management Fee [Member] | NBCUniversal Media Parent [Member] | Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]
Revenue:
Revenue	$ 0	$ 0	$ 0	$ 0

Condensed Consolidating Finan_4

Condensed Consolidating Financial Information (Condensed Consolidating Statement of Cash Flows) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net cash provided by operating activities			$ 14,271	$ 12,537
Investing Activities
Net transactions with affiliates			0	0
Capital expenditures	$ (2,263)	$ (2,250)	(4,355)	(4,223)
Cash paid for intangible assets	(531)	(511)	(1,078)	(930)
Acquisitions and construction of real estate properties			(36)	(104)
Construction of Universal Beijing Resort			(450)	(116)
Acquisitions, net of cash acquired			(114)	(88)
Proceeds from sales of businesses and investments			150	113
Purchases of investments			(1,605)	(538)
Other			74	580
Net cash provided by (used in) investing activities			(7,414)	(5,306)
Financing Activities
Proceeds from (repayments of) short-term borrowings, net			(801)	23
Proceeds from borrowings			363	4,279
Repurchases and repayments of debt			(4,156)	(4,347)
Repurchases of common stock under repurchase program and employee plans			(350)	(2,998)
Dividends paid			(1,823)	(1,616)
Distributions to noncontrolling interests and dividends for redeemable subsidiary preferred stock			(155)	(140)
Other			190	(161)
Net cash provided by (used in) financing activities			(6,732)	(4,960)
Impact of foreign currency on cash, cash equivalents and restricted cash			(15)	0
Increase (decrease) in cash, cash equivalents and restricted cash			110	2,271
Cash, cash equivalents and restricted cash, beginning of period			3,909	3,571
Cash, cash equivalents and restricted cash, end of period	4,019	5,842	4,019	5,842
Elimination and Consolidation Adjustments [Member]
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net cash provided by 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
Construction of Universal Beijing Resort			0	0
Acquisitions, net of cash acquired			0	0
Proceeds from sales of businesses and investments			0	0
Purchases of investments			0	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 of common stock under repurchase program and employee plans			0	0
Dividends paid			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
Impact of foreign currency on cash, cash equivalents and restricted cash			0
Increase (decrease) in cash, cash equivalents and restricted cash			0	0
Cash, cash equivalents and restricted cash, beginning of period			0	0
Cash, cash equivalents and restricted cash, end of period	0	0	0	0
Comcast Parent [Member] | Reportable Legal Entities [Member]
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net cash provided by operating activities			(1,375)	(491)
Investing Activities
Net transactions with affiliates			5,616	4,096
Capital expenditures			(9)	(10)
Cash paid for intangible assets			(2)	(2)
Acquisitions and construction of real estate properties			(32)	(76)
Construction of Universal Beijing Resort			0	0
Acquisitions, net of cash acquired			0	0
Proceeds from sales of businesses and investments			0	0
Purchases of investments			(18)	(28)
Other			0	0
Net cash provided by (used in) investing activities			5,555	3,980
Financing Activities
Proceeds from (repayments of) short-term borrowings, net			487	(902)
Proceeds from borrowings			0	3,973
Repurchases and repayments of debt			(2,507)	(1,900)
Repurchases of common stock under repurchase program and employee plans			(350)	(2,998)
Dividends paid			(1,823)	(1,616)
Distributions to noncontrolling interests and dividends for redeemable subsidiary preferred stock			0	0
Other			13	(46)
Net cash provided by (used in) financing activities			(4,180)	(3,489)
Impact of foreign currency on cash, cash equivalents and restricted cash			0
Increase (decrease) in cash, cash equivalents and restricted cash			0	0
Cash, cash equivalents and restricted cash, beginning of period			0	0
Cash, cash equivalents and restricted cash, end of period	0	0	0	0
Non-Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net cash provided by operating activities			16,180	13,896
Investing Activities
Net transactions with affiliates			(6,107)	(4,290)
Capital expenditures			(4,346)	(4,213)
Cash paid for intangible assets			(1,076)	(928)
Acquisitions and construction of real estate properties			(4)	(28)
Construction of Universal Beijing Resort			(450)	(116)
Acquisitions, net of cash acquired			(114)	(88)
Proceeds from sales of businesses and investments			150	46
Purchases of investments			(1,524)	(480)
Other			74	131
Net cash provided by (used in) investing activities			(13,397)	(9,966)
Financing Activities
Proceeds from (repayments of) short-term borrowings, net			(1,288)	925
Proceeds from borrowings			363	306
Repurchases and repayments of debt			(1,642)	(2,444)
Repurchases of common stock under repurchase program and employee plans			0	0
Dividends paid			0	0
Distributions to noncontrolling interests and dividends for redeemable subsidiary preferred stock			(155)	(140)
Other			177	(115)
Net cash provided by (used in) financing activities			(2,545)	(1,468)
Impact of foreign currency on cash, cash equivalents and restricted cash			(15)
Increase (decrease) in cash, cash equivalents and restricted cash			223	2,462
Cash, cash equivalents and restricted cash, beginning of period			3,493	3,075
Cash, cash equivalents and restricted cash, end of period	3,716	5,537	3,716	5,537
Comcast Holdings [Member] | Subsidiary Issuer [Member] | Reportable Legal Entities [Member]
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net cash provided by operating activities			186	6
Investing Activities
Net transactions with affiliates			(186)	(455)
Capital expenditures			0	0
Cash paid for intangible assets			0	0
Acquisitions and construction of real estate properties			0	0
Construction of Universal Beijing Resort			0	0
Acquisitions, net of cash acquired			0	0
Proceeds from sales of businesses and investments			0	0
Purchases of investments			0	0
Other			0	449
Net cash provided by (used in) investing activities			(186)	(6)
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 of common stock under repurchase program and employee plans			0	0
Dividends paid			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
Impact of foreign currency on cash, cash equivalents and restricted cash			0
Increase (decrease) in cash, cash equivalents and restricted cash			0	0
Cash, cash equivalents and restricted cash, beginning of period			0	0
Cash, cash equivalents and restricted cash, end of period	0	0	0	0
CCCL Parent [Member] | Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net cash provided by operating activities			(80)	(78)
Investing Activities
Net transactions with affiliates			80	78
Capital expenditures			0	0
Cash paid for intangible assets			0	0
Acquisitions and construction of real estate properties			0	0
Construction of Universal Beijing Resort			0	0
Acquisitions, net of cash acquired			0	0
Proceeds from sales of businesses and investments			0	0
Purchases of investments			0	0
Other			0	0
Net cash provided by (used in) investing activities			80	78
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 of common stock under repurchase program and employee plans			0	0
Dividends paid			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
Impact of foreign currency on cash, cash equivalents and restricted cash			0
Increase (decrease) in cash, cash equivalents and restricted cash			0	0
Cash, cash equivalents and restricted cash, beginning of period			0	0
Cash, cash equivalents and restricted cash, end of period	0	0	0	0
NBCUniversal Media Parent [Member] | Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net cash provided by operating activities			(640)	(796)
Investing Activities
Net transactions with affiliates			597	571
Capital expenditures			0	0
Cash paid for intangible assets			0	0
Acquisitions and construction of real estate properties			0	0
Construction of Universal Beijing Resort			0	0
Acquisitions, net of cash acquired			0	0
Proceeds from sales of businesses and investments			0	67
Purchases of investments			(63)	(30)
Other			0	0
Net cash provided by (used in) investing activities			534	608
Financing Activities
Proceeds from (repayments of) short-term borrowings, net			0	0
Proceeds from borrowings			0	0
Repurchases and repayments of debt			(7)	(3)
Repurchases of common stock under repurchase program and employee plans			0	0
Dividends paid			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			(7)	(3)
Impact of foreign currency on cash, cash equivalents and restricted cash			0
Increase (decrease) in cash, cash equivalents and restricted cash			(113)	(191)
Cash, cash equivalents and restricted cash, beginning of period			416	496
Cash, cash equivalents and restricted cash, end of period	$ 303	$ 305	$ 303	$ 305

Condensed Consolidating Finan_5

Condensed Consolidating Financial Information (Condensed Consolidating Balance Sheet) (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018
Assets
Cash and cash equivalents	$ 3,919	$ 3,814
Receivables, net	10,835	11,104
Programming rights	1,947	3,746
Other current assets	4,660	3,184
Total current assets	21,361	21,848
Film and television costs	8,553	7,837
Investments	8,438	7,883
Investments in and amounts due from subsidiaries eliminated upon consolidation	0	0
Property and equipment, net	46,047	44,437
Franchise rights	59,365	59,365
Goodwill	67,945	66,154
Other intangible assets, net	36,076	38,358
Other noncurrent assets, net	8,770	5,802
Total assets	256,555	251,684
Liabilities and Equity
Accounts payable and accrued expenses related to trade creditors	10,014	8,494
Accrued participations and residuals	1,683	1,808
Deferred revenue	2,642	2,182
Accrued expenses and other current liabilities	10,304	10,721
Current portion of long-term debt	6,365	4,398
Total current liabilities	31,008	27,603
Long-term debt, less current portion	101,248	107,345
Deferred income taxes	27,996	27,589
Other noncurrent liabilities	17,144	15,329
Redeemable noncontrolling interests	1,329	1,316
Equity:
Common stock	54	54
Other shareholders’ equity	76,796	71,559
Total Comcast Corporation shareholders’ equity	76,850	71,613
Noncontrolling interests	980	889
Total equity	77,830	72,502	$ 71,743
Total liabilities and equity	256,555	251,684
Elimination and Consolidation Adjustments [Member]
Assets
Cash and cash equivalents	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	(593,569)	(586,231)
Property and equipment, net	0	0
Franchise rights	0	0
Goodwill	0	0
Other intangible assets, net	0	0
Other noncurrent assets, net	(467)	(458)
Total assets	(594,036)	(586,689)
Liabilities and Equity
Accounts payable and accrued expenses related to trade creditors	0	0
Accrued participations and residuals	0	0
Deferred revenue	0	0
Accrued expenses and other current liabilities	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	(612)	(524)
Other noncurrent liabilities	145	66
Redeemable noncontrolling interests	0	0
Equity:
Common stock	0	0
Other shareholders’ equity	(593,569)	(586,231)
Total Comcast Corporation shareholders’ equity	(593,569)	(586,231)
Noncontrolling interests	0	0
Total equity	(593,569)	(586,231)
Total liabilities and equity	(594,036)	(586,689)
Comcast Parent [Member] | Reportable Legal Entities [Member]
Assets
Cash and cash equivalents	0	0
Receivables, net	0	0
Programming rights	0	0
Other current assets	115	66
Total current assets	115	66
Film and television costs	0	0
Investments	281	270
Investments in and amounts due from subsidiaries eliminated upon consolidation	160,659	157,264
Property and equipment, net	668	670
Franchise rights	0	0
Goodwill	0	0
Other intangible assets, net	10	11
Other noncurrent assets, net	1,038	1,057
Total assets	162,771	159,338
Liabilities and Equity
Accounts payable and accrued expenses related to trade creditors	0	2
Accrued participations and residuals	0	0
Deferred revenue	0	0
Accrued expenses and other current liabilities	2,403	2,357
Current portion of long-term debt	2,587	699
Total current liabilities	4,990	3,058
Long-term debt, less current portion	77,782	81,661
Deferred income taxes	0	0
Other noncurrent liabilities	3,149	3,006
Redeemable noncontrolling interests	0	0
Equity:
Common stock	54	54
Other shareholders’ equity	76,796	71,559
Total Comcast Corporation shareholders’ equity	76,850	71,613
Noncontrolling interests	0	0
Total equity	76,850	71,613
Total liabilities and equity	162,771	159,338
Non-Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]
Assets
Cash and cash equivalents	3,616	3,398
Receivables, net	10,835	11,104
Programming rights	1,947	3,746
Other current assets	4,501	3,070
Total current assets	20,899	21,318
Film and television costs	8,553	7,837
Investments	7,099	6,669
Investments in and amounts due from subsidiaries eliminated upon consolidation	98,426	97,872
Property and equipment, net	45,379	43,767
Franchise rights	59,365	59,365
Goodwill	67,945	66,154
Other intangible assets, net	36,066	38,347
Other noncurrent assets, net	7,935	4,910
Total assets	351,667	346,239
Liabilities and Equity
Accounts payable and accrued expenses related to trade creditors	10,014	8,492
Accrued participations and residuals	1,683	1,808
Deferred revenue	2,642	2,182
Accrued expenses and other current liabilities	6,913	7,572
Current portion of long-term debt	1,767	3,695
Total current liabilities	23,019	23,749
Long-term debt, less current portion	15,463	15,690
Deferred income taxes	28,206	27,734
Other noncurrent liabilities	12,303	11,056
Redeemable noncontrolling interests	1,329	1,316
Equity:
Common stock	0	0
Other shareholders’ equity	270,367	265,805
Total Comcast Corporation shareholders’ equity	270,367	265,805
Noncontrolling interests	980	889
Total equity	271,347	266,694
Total liabilities and equity	351,667	346,239
Comcast Holdings [Member] | Subsidiary Issuer [Member] | Reportable Legal Entities [Member]
Assets
Cash and cash equivalents	0	0
Receivables, net	0	0
Programming rights	0	0
Other current assets	22	20
Total current assets	22	20
Film and television costs	0	0
Investments	12	11
Investments in and amounts due from subsidiaries eliminated upon consolidation	147,775	147,028
Property and equipment, net	0	0
Franchise rights	0	0
Goodwill	0	0
Other intangible assets, net	0	0
Other noncurrent assets, net	163	208
Total assets	147,972	147,267
Liabilities and Equity
Accounts payable and accrued expenses related to trade creditors	0	0
Accrued participations and residuals	0	0
Deferred revenue	0	0
Accrued expenses and other current liabilities	244	150
Current portion of long-term debt	0	0
Total current liabilities	244	150
Long-term debt, less current portion	152	146
Deferred income taxes	334	314
Other noncurrent liabilities	0	0
Redeemable noncontrolling interests	0	0
Equity:
Common stock	0	0
Other shareholders’ equity	147,242	146,657
Total Comcast Corporation shareholders’ equity	147,242	146,657
Noncontrolling interests	0	0
Total equity	147,242	146,657
Total liabilities and equity	147,972	147,267
CCCL Parent [Member] | Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]
Assets
Cash and cash equivalents	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	148	143
Investments in and amounts due from subsidiaries eliminated upon consolidation	130,444	130,214
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	130,592	130,357
Liabilities and Equity
Accounts payable and accrued expenses related to trade creditors	0	0
Accrued participations and residuals	0	0
Deferred revenue	0	0
Accrued expenses and other current liabilities	356	360
Current portion of long-term debt	0	0
Total current liabilities	356	360
Long-term debt, less current portion	2,100	2,100
Deferred income taxes	0	0
Other noncurrent liabilities	0	0
Redeemable noncontrolling interests	0	0
Equity:
Common stock	0	0
Other shareholders’ equity	128,136	127,897
Total Comcast Corporation shareholders’ equity	128,136	127,897
Noncontrolling interests	0	0
Total equity	128,136	127,897
Total liabilities and equity	130,592	130,357
NBCUniversal Media Parent [Member] | Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]
Assets
Cash and cash equivalents	303	416
Receivables, net	0	0
Programming rights	0	0
Other current assets	22	28
Total current assets	325	444
Film and television costs	0	0
Investments	898	790
Investments in and amounts due from subsidiaries eliminated upon consolidation	56,265	53,853
Property and equipment, net	0	0
Franchise rights	0	0
Goodwill	0	0
Other intangible assets, net	0	0
Other noncurrent assets, net	101	85
Total assets	57,589	55,172
Liabilities and Equity
Accounts payable and accrued expenses related to trade creditors	0	0
Accrued participations and residuals	0	0
Deferred revenue	0	0
Accrued expenses and other current liabilities	388	282
Current portion of long-term debt	2,011	4
Total current liabilities	2,399	286
Long-term debt, less current portion	5,751	7,748
Deferred income taxes	68	65
Other noncurrent liabilities	1,547	1,201
Redeemable noncontrolling interests	0	0
Equity:
Common stock	0	0
Other shareholders’ equity	47,824	45,872
Total Comcast Corporation shareholders’ equity	47,824	45,872
Noncontrolling interests	0	0
Total equity	47,824	45,872
Total liabilities and equity	$ 57,589	$ 55,172

Uncategorized Items - cmcsa-630

Label	Element	Value
AOCI Attributable to Parent [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 0
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	0
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	76,000,000
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	0
AOCI Attributable to Parent [Member] | NBCUniversal Media LLC [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	0
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	0
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	232,000,000
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	0
Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	(43,000,000)
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	0
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	0
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	0
Member's Capital [Member] | NBCUniversal Media LLC [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	0
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	0
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	0
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ (232,000,000)