Leases, Remaining Minimum Lease Payments (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Operating Leases
2024	$ 398
2025	254
2026	195
2027	103
2028	64
Thereafter	386
Total undiscounted lease payments	1,400
Less: Amount associated with discounting	287
Total lease liabilities	1,113	$ 1,087
Finance Leases
2024	312
2025	298
2026	274
2027	244
2028	243
Thereafter	1,967
Total undiscounted lease payments	3,338
Less: Amount associated with discounting	1,032
Total lease liabilities	$ 2,306	$ 2,394