Leases - Schedule of Rent Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	[1]	Dec. 31, 2020	[1]	Dec. 31, 2019
Schedule Of Rent Expense [Abstract]
Minimum rentals	$ 20		$ 19		$ 19
Contingent rentals	2		1		2
Rent expense	$ 22		$ 20		$ 21

[1] These amounts include short term and variable rent of $2 million, $5 million, and $3 million for the years December 31, 2021, 2020 and 2019, respectively.