Other Financial Data - Schedule of Allowance for Doubtful Accounts (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Jan. 01, 2020	Dec. 31, 2018
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	$ 98	$ 70	$ 62
Provision	26	29	27
Accounts written off, net of recoveries	(37)	(6)	(19)
Foreign currency translation and other	3	(2)	0
Balance at end of period	90	98	70
Allowance for doubtful accounts	90	98	70		$ 62
Cumulative adjustment amount to decrease retained earnings	(1,158)	(3,583)	(3,449)		(4,219)
Retained Earnings (Accumulated Deficit)
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Cumulative adjustment amount to decrease retained earnings	1,694	(1,042)	(1,254)		(2,093)
Cumulative Effect, Period of Adoption, Adjustment
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	0	7	0
Balance at end of period		0	7
Allowance for doubtful accounts		0	7	$ 7	0
Cumulative adjustment amount to decrease retained earnings			6
Cumulative Effect, Period of Adoption, Adjustment | Retained Earnings (Accumulated Deficit)
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Cumulative adjustment amount to decrease retained earnings			6	$ 6
Cumulative Effect, Period of Adoption, Adjusted Balance
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	$ 98	77	62
Balance at end of period		98	77
Allowance for doubtful accounts		$ 98	77		$ 62
Cumulative adjustment amount to decrease retained earnings			(3,443)
Cumulative Effect, Period of Adoption, Adjusted Balance | Retained Earnings (Accumulated Deficit)
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Cumulative adjustment amount to decrease retained earnings			$ (1,248)