Allowance for Credit Losses - Summary of Allowance for Credit Losses on Accounts Receivables (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Receivables [Abstract]
Balance at beginning of period	$ 14	$ 14
Provision for expected credit losses	2	0
Write-offs/recoveries	(2)	(1)
Balance at end of period	$ 14	$ 13