Leases - Maturity Schedules (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Operating leases
2022	$ 100
2023	79
2024	53
2025	37
2026	25
Thereafter	68
Total future undiscounted lease payments	362
Less: imputed interest	(30)
Total reported lease liability	332	$ 336
Finance leases
2022	5
2023	4
2024	3
2025	2
2026	0
Thereafter	0
Total future undiscounted lease payments	14
Less: imputed interest	(1)
Total reported lease liability	$ 13	$ 8