Commitments and Contingent Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Guarantor Obligations
Guarantees, maximum potential amount of future payments	$ 19	$ 26
Total assets	32,464	31,957
Liabilities	29,357	28,994
Maximum
Guarantor Obligations
Related recorded liability	1	1
Variable interest entity, primary beneficiary
Guarantor Obligations
Total assets	1,540	971
Liabilities	$ 1,540	$ 970