Leases - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Lessee, Lease, Description [Line Items]
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]	Accounts Payable and Accrued Liabilities	Accounts Payable and Accrued Liabilities
Operating lease, right-of-use assets	$ 111	$ 97
Lease liabilities	$ 122	$ 108
Minimum
Lessee, Lease, Description [Line Items]
Operating lease, contract term	1 year
Operating lease, renewal term	3 years
Maximum
Lessee, Lease, Description [Line Items]
Operating lease, contract term	8 years
Operating lease, renewal term	8 years