Leases (Future Minimum Maturities of Lease Liabilities) (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Operating Leases
Remainder of 2022	$ 1,162
2023	4,486
2024	4,062
2025	3,413
2026	2,703
Thereafter	10,539
Total lease payments	26,365
Less: imputed interest	(4,156)
Total	22,209	$ 22,349
Finance Leases
Remainder of 2022	70
2023	279
2024	270
2025	274
2026	253
Thereafter	1,136
Total lease payments	2,282
Less: imputed interest	(651)
Total	$ 1,631	$ 1,569