Revenue (Tables)

12 Months Ended

Dec. 31, 2021

Revenue from Contract with Customer [Abstract]

Disaggregation of revenue

Year ended December 31 (in millions)	2021		2020		2019
Residential:
Broadband	$	22,979	$	20,599	$	18,752
Video	22,079		21,937		22,270
Voice	3,417		3,532		3,879
Wireless	2,380		1,574		1,167
Business services	8,933		8,191		7,795
Advertising	2,820		2,594		2,465
Other	1,719		1,624		1,754
Total Cable Communications	64,328		60,051		58,082
Advertising	10,291		8,296		9,267
Distribution	10,449		8,795		8,887
Other	2,040		1,845		1,793
Total Media	22,780		18,936		19,947
Content licensing	7,565		6,557		6,373
Theatrical	691		418		1,469
Home entertainment and other	1,193		1,159		1,510
Total Studios	9,449		8,134		9,352
Total Theme Parks	5,051		2,094		6,213
Headquarters and Other	87		53		31
Eliminations(a)	(3,048)		(2,006)		(1,585)
Total NBCUniversal	34,319		27,211		33,958
Direct-to-consumer	16,455		15,223		15,538
Content	1,341		1,373		1,432
Advertising	2,489		1,998		2,249
Total Sky	20,285		18,594		19,219
Corporate and Other	461		248		333
Eliminations(a)	(3,008)		(2,540)		(2,650)
Total revenue	$	116,385	$	103,564	$	108,942

(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. The table below summarizes our consolidated revenue from customers in certain geographic locations.

Year ended December 31 (in millions)	2021		2020		2019
United States	$	90,926	$	80,327	$	82,952
United Kingdom	13,999		11,986		12,501
Other	11,460		11,251		13,489
Total revenue	$	116,385	$	103,564	$	108,942

Schedule of receivables, net

The following table summarizes our accounts receivable:

December 31 (in millions)	2021		2020
Receivables, gross	$	12,666	$	12,273
Less: Allowance for doubtful accounts	658		807
Receivables, net	$	12,008	$	11,466

Changes in the allowance for doubtful accounts

The following table presents changes in our allowance for doubtful accounts:

(in millions)	2021		2020		2019
Beginning balance	$	807	$	419	$	352
Additions charged to costs and expenses and other accounts	316		912		769
Deductions from reserves	465		524		702
Ending balance	$	658	$	807	$	419

Other balance sheet accounts

The following table summarizes our other balances that are not separately presented in our consolidated balance sheet that relate to the recognition of revenue and collection of the related cash, as well as the deferred costs associated with our contracts with customers:

December 31 (in millions)	2021		2020
Noncurrent receivables, net (included in other noncurrent assets, net)	$	1,632	$	1,091
Contract acquisition and fulfillment costs (included in other noncurrent assets, net)	$	1,094	$	1,060
Noncurrent deferred revenue (included in other noncurrent liabilities)	$	695	$	750