Leases (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease right of use asset	$ 272	$ 370
Total lease liabilities	363	501
Total lease expense	92	110	$ 146
Operating lease expense	66	84	121
Variable lease expense	23	22	19
Short term lease expense	3	4	6
Lease liability cash payments	65	86	117
Operating lease right of use assets obtained in exchange for lease obligations	35	40	$ 54
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2022	63
2023	58
2024	46
2025	38
2026	34
Thereafter	243
Total	482
Less: discount	119
Total lease liabilities	$ 363	$ 501
Lessee Disclosure [Abstract]
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other assets	Other assets
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Other liabilities	Other liabilities
Weighted average remaining lease term	10 years
Weighted average discount rate	3.40%