Long-term debt and interest expense, net (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Long-term debt and interest expense, net
Obligations under finance leases and other	$ 7	$ 5
Debt discount and issuance costs	(36)	(39)
Total long-term debt	2,089	2,086
Current portion of long-term debt	(29)	(24)
Non-current portion of long-term debt	2,060	2,062
Term Loan B
Long-term debt and interest expense, net
Long-term debt	1,444	1,444
2023 Notes
Long-term debt and interest expense, net
Long-term debt	500	500
2027 Notes
Long-term debt and interest expense, net
Long-term debt	150	150
Deferred financing
Long-term debt and interest expense, net
Long-term debt	$ 24	$ 26