Leases (Schedule of Maturities of Operating and Financing Leases) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Leases [Abstract]
Lessee, operating lease, liability, payments, due next twelve months	$ 157
Finance lease, liability, payments, due next twelve months	13
Lease liability, payments, due next twelve months	170
Lessee, operating lease, liability, payments, due year two	113
Finance lease, liability, payments, due year two	11
Lease liability, payments, due year two	124
Lessee, operating lease, liability, payments, due year three	75
Finance lease, liability, payments, due year three	10
Lease liability, payments due, year three	85
Lessee, operating lease, liability, payments, due year four	48
Finance lease, liability, payments, due year four	9
Lease liability, payments, due year four	57
Lessee, operating lease, liability, payments, due year five	30
Finance lease, liability, payments, due year five	8
Lease liability, payments, due year five	38
Lessee, operating lease, liability, payments, due after year five	36
Finance lease, liability, payments, due after year five	26
Lease liability payments, due after year five	62
Operating lease, liability, payment, due	459
Finance lease, liability, payment, due	77
Lease liability, payments, total	536
Lessee, operating lease, liability, undiscounted excess amount	29
Lessee, finance lease, liability, undiscounted excess amount	18
Lease liability, undiscounted excess amount	47
Operating lease liability	430
Finance lease liability	59	$ 66
Total lease liabilities	$ 489	$ 434