Leases (Supplemental Cash Flow Information Related to Leases) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Operating cash flows related to operating leases	$ 160	$ 166	$ 162
Finance Lease, Interest Payment on Liability	3	4	5
Financing cash flows related to finance leases	10	14	10
Right of use asset obtained in exchange for operating lease liability	221	156	179
Right of use asset obtained in exchange for finance lease liability	$ 6	$ 9	$ 11