Other Financial Data - Schedule of Allowance for Doubtful Accounts (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Movement ofAccounts Receivable, Allowance for Credit Loss, Current [Roll Forward]
Balance at beginning of period	$ 90	$ 98
Provision	6	6
Accounts written off, net of recoveries	(3)	(4)
Foreign currency translation and other	0	1
Balance at end of period	$ 93	$ 101