Leases - Supplemental cash flow information (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Leases [Abstract]
Operating cash flows for operating leases	$ 102	$ 94
Financing cash flows for finance leases	5	3
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	40	69
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	$ 4	$ 16