Commitments and Contingent Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Guarantor Obligations
Guarantees, maximum potential amount of future payments	$ 28	$ 25
Total assets	40,457	38,313
Liabilities	36,952	35,086
Variable Interest Entity, Primary Beneficiary
Guarantor Obligations
Total assets	1,250	1,190
Liabilities	1,250	1,190
Maximum
Guarantor Obligations
Related recorded liability	$ 1	$ 1