Leases (Schedule of Supplemental Balance Sheet Information) (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Property leases
Operating lease ROU assets	$ 3,222	$ 3,057
Short-term operating lease liabilities	656	628
Long-term operating lease liabilities	2,619	2,484
Operating lease liabilities	$ 3,275	$ 3,112
Weighted average remaining lease term	7 years 8 months 12 days	8 years
Weighted average discount rate	5.36%	4.98%
Operating lease, liability, current, statement of financial position [extensible enumeration]	Accounts Payable and Accrued Liabilities, Current	Accounts Payable and Accrued Liabilities, Current