Offsetting Arrangements - Liabilities With Offsetting Arrangements (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Offsetting Liabilities [Line Items]
Derivatives, Gross Amounts of Recognized Liabilities	$ 29,124	$ 19,602
Derivatives, Gross Amounts Offset in Statement of Condition	(22,528)	(11,909)
Derivatives, Net Amounts of Liabilities Presented in Statement of Condition	6,596	7,693
Derivative, Net Amount	5,024	7,060
Derivative liability, collateral, cash offset	(6,103)	(1,413)
Derivatives, Cash and collateral securities netting, Cash and Securities Provided	(1,572)	(633)
Derivatives, Cash and collateral securities netting, Net	(7,675)	(2,046)
Resale agreements and securities lending, Gross Amounts of Recognized Liabilities	250,032	214,362
Resale agreements and securities lending, Gross Amounts Offset in Statement of Condition	(232,021)	(200,561)
Resale agreements and securities lending, Net Amounts of Liabilities Presented in Statement of Condition	18,011	13,801
Resale agreements and securities lending, Cash and Securities Provided	(17,835)	(13,306)
Resale agreements and securities lending, Net Amount	176	495
Total derivatives and other financial instruments, Gross Amounts of Recognized Liabilities	279,156	233,964
Total derivatives and other financial instruments, Gross Amounts Offset in Statement of Condition	(254,549)	(212,470)
Total derivatives and other financial instruments, Net Amounts of Liabilities Presented in Statement of Condition	24,607	21,494
Total derivatives and other financial instruments, Cash and Securities Provided	(19,407)	(13,939)
Total derivatives and other financial instruments, Net Amount	5,200	7,555
Cash collateral received in connection to securities finance activities	14,330	11,930
Foreign exchange contracts
Offsetting Liabilities [Line Items]
Derivatives, Gross Amounts of Recognized Liabilities	28,904	19,416
Derivatives, Gross Amounts Offset in Statement of Condition	(16,424)	(10,496)
Derivatives, Net Amounts of Liabilities Presented in Statement of Condition	12,480	8,920
Derivative, Net Amount	12,480	8,920
Interest rate contracts
Offsetting Liabilities [Line Items]
Derivatives, Gross Amounts of Recognized Liabilities	1	4
Derivatives, Gross Amounts Offset in Statement of Condition	(1)	0
Derivatives, Net Amounts of Liabilities Presented in Statement of Condition	0	4
Derivative, Net Amount	0	4
Other derivative contracts
Offsetting Liabilities [Line Items]
Derivatives, Gross Amounts of Recognized Liabilities	219	182
Derivatives, Gross Amounts Offset in Statement of Condition	0	0
Derivatives, Net Amounts of Liabilities Presented in Statement of Condition	219	182
Derivative, Net Amount	$ 219	$ 182