Credit Losses on Financial Instruments (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance at January 1, 2020	$ 45	$ 18
Provision for expected losses	19	41
Write-offs charged against the allowance	(27)	(23)
Recoveries collected	5	11
Reclassified as held for sale	(3)	0
Foreign currency exchange rate changes adjustment	0	(2)
Balance at end of period	$ 39	$ 45