Leases - Supplemental Cash Flow and Other Information Related to Leases (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Leases [Abstract]
Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases	$ 101	$ 102
Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from finance leases	8	3
Cash paid for amounts included in the measurement of lease liabilities: Financing cash flows from finance leases	8	3
Right-of-use assets obtained in exchange for new finance lease liabilities	42	15
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 92	$ 36