Cash, Cash Equivalents, and Restricted Cash (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
Cash and Cash Equivalents [Abstract]
Cash and cash equivalents	$ 389	$ 531
Restricted cash included in prepaid expenses and other current assets	71	61
Restricted cash included in other non-current assets	0	1
Total restricted cash	71	62
Total cash, cash equivalents and restricted cash	$ 460	$ 593	$ 667	$ 1,238