Leases (Maturity Schedule) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Operating Leases
Total operating lease liability	$ 6,478	$ 6,010
Finance Leases
Total finance lease liability	2,361	$ 2,042
Operating Lease [Member]
Operating Leases
2025	2,119
2026	1,569
2027	1,134
2028	715
2029	305
2030 and beyond	1,712
Total operating lease payments	7,554
Operating lease - discount to present value	(1,076)
Total operating lease liability	6,478
Finance Lease [Member]
Finance Leases
2025	275
2026	274
2027	265
2028	263
2029	256
2030 and beyond	2,450
Total finance lease payments	3,783
Finance lease - discount to present value	(1,422)
Total finance lease liability	$ 2,361