Commitments and Guarantees - Contractual Amounts of Credit-Related Off-Balance Sheet Financial Instruments (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Unfunded credit facilities	$ 34,569	$ 34,197
Indemnified securities financing	326,375	279,916
Standby letters of credit	$ 1,491	$ 1,510