Segment Information (Tables)

9 Months Ended

Sep. 30, 2021

Segment Reporting [Abstract]

Financial Data by Business Segment

Our financial data by reportable segment is presented in the tables below.

	Three Months Ended September 30, 2021
(in millions)	Revenue(a)		Adjusted EBITDA(b)		Depreciation and Amortization		Capital Expenditures		Cash Paid for Intangible Assets
Cable Communications	$	16,115	$	7,069	$	1,965	$	1,673	$	370
NBCUniversal
Media	6,770		997		248		20		38
Studios	2,407		179		14		1		3
Theme Parks	1,449		434		213		122		8
Headquarters and Other	28		(248)		115		87		36
Eliminations(a)	(654)		(12)		—		—		—
NBCUniversal	10,001		1,349		591		229		85
Sky	4,988		971		884		160		221
Corporate and Other	65		(335)		38		80		48
Eliminations(a)	(871)		(98)		—		—		—
Comcast Consolidated	$	30,298	$	8,957	$	3,477	$	2,142	$	723

	Three Months Ended September 30, 2020
(in millions)	Revenue(a)		Adjusted EBITDA(b)		Depreciation and Amortization		Capital Expenditures		Cash Paid for Intangible Assets
Cable Communications	$	15,000	$	6,411	$	1,952	$	1,770	$	296
NBCUniversal
Media	4,589		985		245		19		39
Studios	1,898		340		17		3		1
Theme Parks	385		(174)		209		306		11
Headquarters and Other	12		(127)		112		29		28
Eliminations(a)	(551)		(114)		—		—		—
NBCUniversal	6,333		910		583		357		79
Sky	4,793		515		750		237		176
Corporate and Other	44		(264)		35		23		1
Eliminations(a)	(638)		11		—		—		—
Comcast Consolidated	$	25,532	$	7,583	$	3,320	$	2,387	$	552

	Nine Months Ended September 30, 2021
(in millions)	Revenue(a)		Adjusted EBITDA(b)		Depreciation and Amortization		Capital Expenditures		Cash Paid for Intangible Assets
Cable Communications	$	47,922	$	20,972	$	5,845	$	4,739	$	1,022
NBCUniversal
Media	16,955		3,847		749		49		112
Studios	7,027		833		39		2		9
Theme Parks	3,163		593		615		348		23
Headquarters and Other	65		(643)		356		184		93
Eliminations(a)	(2,230)		(238)		—		—		—
NBCUniversal	24,981		4,392		1,759		584		238
Sky	15,205		1,895		2,524		615		633
Corporate and Other	246		(876)		95		208		113
Eliminations(a)	(2,304)		(87)		—		—		—
Comcast Consolidated	$	86,049	$	26,297	$	10,222	$	6,146	$	2,006

	Nine Months Ended September 30, 2020
(in millions)	Revenue(a)		Adjusted EBITDA(b)		Depreciation and Amortization		Capital Expenditures		Cash Paid for Intangible Assets
Cable Communications	$	44,346	$	18,663	$	5,835	$	4,491	$	978
NBCUniversal
Media	13,563		4,150		732		79		126
Studios	6,359		963		49		9		4
Theme Parks	1,446		(480)		590		897		42
Headquarters and Other	32		(430)		357		129		106
Eliminations(a)	(1,623)		(224)		—		—		—
NBCUniversal	19,777		3,979		1,728		1,114		278
Sky	13,389		1,815		2,188		649		512
Corporate and Other	204		(846)		97		90		3
Eliminations(a)	(1,860)		29		—		—		—
Comcast Consolidated	$	75,856	$	23,640	$	9,848	$	6,344	$	1,771

(a)Included in Eliminations are transactions that our segments enter into with one another. Our segments generally report transactions with one another as if they were stand-alone businesses in accordance with GAAP, and these transactions are eliminated in consolidation. When multiple segments enter into transactions to provide products and services to third parties, revenue is generally allocated to our segments based on relative value. The most significant transactions between our segments include distribution revenue at Media for fees received from Cable Communications for the sale of cable network programming and under retransmission consent agreements; content licensing revenue at Studios for licenses of owned content to Media and Sky; and advertising revenue at Media and Cable Communications. Revenue for licenses of content from Studios to Media and Sky is generally recognized at a point in time, consistent with the recognition of transactions with third parties, when the content is delivered and made available for use. The costs of these licenses at Media and Sky are recognized as the content is used over the license period. The difference in timing of recognition between segments results in an Adjusted EBITDA impact in eliminations, as the profits (losses) on these transactions are deferred in our consolidated results and recognized as the content is used over the license period. Under the previous segment structure, revenue for licenses of content between our previous NBCUniversal segments was recognized over time to correspond with the amortization of the costs of licensed content over the license period.

A summary of revenue for each of our segments resulting from transactions with other segments and eliminated in consolidation is presented in the table below.

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)	2021		2020		2021		2020
Cable Communications	$	69	$	56	$	162	$	139
NBCUniversal
Media	714		478		1,799		1450
Studios	682		615		2,357		1,780
Theme Parks	—		—		1		—
Headquarters and Other	23		9		52		15
Sky	3		6		26		15
Corporate and Other	32		24		137		84
Total intersegment revenue	$	1,525	$	1,189	$	4,535	$	3,483

(b)We use Adjusted EBITDA as the measure of profit or loss for our operating segments. From time to time we may report the impact of certain events, gains, losses or other charges related to our operating segments (such as certain costs incurred in response to COVID-19, including severance charges), within Corporate and Other. 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 September 30,				Nine Months Ended September 30,
(in millions)	2021		2020		2021		2020
Adjusted EBITDA	$	8,957	$	7,583	$	26,297	$	23,640
Adjustments	(30)		(187)		(79)		(217)
Depreciation	(2,177)		(2,122)		(6,407)		(6,328)
Amortization	(1,301)		(1,198)		(3,815)		(3,520)
Interest expense	(1,050)		(1,220)		(3,161)		(3,544)
Investment and other income (loss), net	766		(86)		2,374		(382)
Income before income taxes	$	5,166	$	2,770	$	15,208	$	9,649

Adjustments represent the impacts of certain events, gains, losses or other charges that are excluded from Adjusted EBITDA, including Sky transaction-related costs and costs related to our investment portfolio. Adjustments for the three and nine months ended September 30, 2020 also include $177 million related to a legal settlement.

Reconciliation of Adjusted EBITDA from Segments to Consolidated

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 September 30,				Nine Months Ended September 30,
(in millions)	2021		2020		2021		2020
Adjusted EBITDA	$	8,957	$	7,583	$	26,297	$	23,640
Adjustments	(30)		(187)		(79)		(217)
Depreciation	(2,177)		(2,122)		(6,407)		(6,328)
Amortization	(1,301)		(1,198)		(3,815)		(3,520)
Interest expense	(1,050)		(1,220)		(3,161)		(3,544)
Investment and other income (loss), net	766		(86)		2,374		(382)
Income before income taxes	$	5,166	$	2,770	$	15,208	$	9,649

Adjustments represent the impacts of certain events, gains, losses or other charges that are excluded from Adjusted EBITDA, including Sky transaction-related costs and costs related to our investment portfolio. Adjustments for the three and nine months ended September 30, 2020 also include $177 million related to a legal settlement.

Schedule of Goodwill

The changes in the carrying amount of goodwill by segment for the nine months ended September 30, 2021 are as follows:

			NBCUniversal
(in billions)	Cable Communications		Cable Networks		Broadcast Television		Filmed Entertainment		Media		Studios		Theme Parks		Sky		Corporate and Other		Total
Balance, December 31, 2020	$	15.3	$	14.0	$	1.1	$	3.3	$	—	$	—	$	7.0	$	30.0	$	—	$	70.7
Segment change	—		(14.0)		(1.1)		(3.3)		14.7		3.7		—		—		—		—
Foreign currency translation and other	0.1		—		—		—		—		—		(0.4)		(0.6)		—		(1.0)
Balance, September 30, 2021	$	15.3	$	—	$	—	$	—	$	14.7	$	3.7	$	6.6	$	29.3	$	—	$	69.6