Deposits - Noninterest and Interest-bearing (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
U.S. offices
Noninterest-bearing (included $14,418 and $16,610 at fair value)	$ 595,424	$ 583,342
Interest-bearing (included $1,784 and $1,085 at fair value)	1,508,682	1,452,729
Total deposits in U.S. offices	2,104,106	2,036,071
Non-U.S. offices
Noninterest-bearing (included $3,482 and $3,099 at fair value)	43,775	37,057
Interest-bearing (included $119 and $136 at fair value)	527,639	486,192
Total deposits in non-U.S. offices	571,414	523,249
Total deposits	2,675,520	2,559,320
Fair value
U.S. offices
Noninterest-bearing (included $14,418 and $16,610 at fair value)	14,418	16,610
Interest-bearing, fair value	1,784	1,085
Non-U.S. offices
Noninterest-bearing (included $3,482 and $3,099 at fair value)	3,482	3,099
Interest-bearing, fair value	$ 119	$ 136