Offsetting Arrangements - Liabilities With Offsetting Arrangements (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Offsetting Liabilities [Line Items]
Derivatives, Gross Amounts of Recognized Liabilities	$ 14,261	$ 29,124
Derivatives, Gross Amounts Offset in Statement of Condition	(9,236)	(22,528)
Derivatives, Net Amounts of Liabilities Presented in Statement of Condition	5,025	6,596
Derivative, Net Amount	4,268	5,024
Derivative liability, collateral, cash offset	(1,614)	(6,103)
Derivatives, Cash and collateral securities netting, Cash and Securities Provided	(757)	(1,572)
Derivatives, Cash and collateral securities netting, Net	(2,371)	(7,675)
Resale agreements and securities lending, Gross Amounts of Recognized Liabilities	273,785	250,032
Resale agreements and securities lending, Gross Amounts Offset in Statement of Condition	(252,779)	(232,021)
Resale agreements and securities lending, Net Amounts of Liabilities Presented in Statement of Condition	21,006	18,011
Resale agreements and securities lending, Cash and Securities Provided	(20,165)	(17,835)
Resale agreements and securities lending, Net Amount	841	176
Total derivatives and other financial instruments, Gross Amounts of Recognized Liabilities	288,046	279,156
Total derivatives and other financial instruments, Gross Amounts Offset in Statement of Condition	(262,015)	(254,549)
Total derivatives and other financial instruments, Net Amounts of Liabilities Presented in Statement of Condition	26,031	24,607
Total derivatives and other financial instruments, Cash and Securities Provided	(20,922)	(19,407)
Total derivatives and other financial instruments, Net Amount	5,109	5,200
Securities sold under repurchase agreements	841	3,681
Cash collateral received in connection to securities finance activities	20,170	14,330
Foreign exchange contracts
Offsetting Liabilities [Line Items]
Derivatives, Gross Amounts of Recognized Liabilities	14,097	28,904
Derivatives, Gross Amounts Offset in Statement of Condition	(7,617)	(16,424)
Derivatives, Net Amounts of Liabilities Presented in Statement of Condition	6,480	12,480
Derivative, Net Amount	6,480	12,480
Interest rate contracts
Offsetting Liabilities [Line Items]
Derivatives, Gross Amounts of Recognized Liabilities	5	1
Derivatives, Gross Amounts Offset in Statement of Condition	(5)	(1)
Derivatives, Net Amounts of Liabilities Presented in Statement of Condition	0	0
Derivative, Net Amount	0	0
Other derivative contracts
Offsetting Liabilities [Line Items]
Derivatives, Gross Amounts of Recognized Liabilities	159	219
Derivatives, Gross Amounts Offset in Statement of Condition	0	0
Derivatives, Net Amounts of Liabilities Presented in Statement of Condition	159	219
Derivative, Net Amount	$ 159	$ 219