Leases - Schedule of Rent Expense and Supplemental Cash Flow and Non Cash Information (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease expense		$ 29	$ 30	$ 30
Variable lease expense		4	2	13
Operating cash flows for operating leases		$ 30	$ 28	36
Right-of-use assets obtained in exchange for lease obligations(1)	[1]			$ 278

[1] For the year ended December 31, 2019, balance represents right-of-use assets recognized upon adoption of ASC 842, Leases, on January 1, 2019, and right-of-use assets assumed in connection with the Merger.