v3.25.2
Investment Securities - Schedule of Gross Pre-Tax Unrealized Losses on Investment Securities (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]    
Available for sale, fair value less than 12 months $ 19,651 $ 18,678
Available for sale, gross unrealized losses less than 12 months 62 136
Available for sale, fair value 12 months or longer 17,477 10,412
Available for sale, gross unrealized losses 12 months or longer 140 147
Available for sale, fair value total 37,128 29,090
Available for sale, gross unrealized losses total 202 283
Total U.S. Treasury and federal agencies    
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]    
Available for sale, fair value less than 12 months 15,184 11,855
Available for sale, gross unrealized losses less than 12 months 58 84
Available for sale, fair value 12 months or longer 14,457 6,795
Available for sale, gross unrealized losses 12 months or longer 123 122
Available for sale, fair value total 29,641 18,650
Available for sale, gross unrealized losses total 181 206
Direct obligations    
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]    
Available for sale, fair value less than 12 months 10,955 8,113
Available for sale, gross unrealized losses less than 12 months 7 25
Available for sale, fair value 12 months or longer 10,248 2,435
Available for sale, gross unrealized losses 12 months or longer 40 27
Available for sale, fair value total 21,203 10,548
Available for sale, gross unrealized losses total 47 52
Mortgage-backed securities    
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]    
Available for sale, fair value less than 12 months 4,229 3,742
Available for sale, gross unrealized losses less than 12 months 51 59
Available for sale, fair value 12 months or longer 4,209 4,360
Available for sale, gross unrealized losses 12 months or longer 83 95
Available for sale, fair value total 8,438 8,102
Available for sale, gross unrealized losses total 134 154
Total non-U.S. debt securities    
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]    
Available for sale, fair value less than 12 months 3,807 6,124
Available for sale, gross unrealized losses less than 12 months 4 52
Available for sale, fair value 12 months or longer 2,997 3,542
Available for sale, gross unrealized losses 12 months or longer 16 24
Available for sale, fair value total 6,804 9,666
Available for sale, gross unrealized losses total 20 76
Mortgage-backed securities    
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]    
Available for sale, fair value less than 12 months 476 730
Available for sale, gross unrealized losses less than 12 months 1 1
Available for sale, fair value 12 months or longer 111 225
Available for sale, gross unrealized losses 12 months or longer 0 0
Available for sale, fair value total 587 955
Available for sale, gross unrealized losses total 1 1
Asset-backed securities    
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]    
Available for sale, fair value less than 12 months 381 387
Available for sale, gross unrealized losses less than 12 months 1 0
Available for sale, fair value 12 months or longer 340 506
Available for sale, gross unrealized losses 12 months or longer 1 2
Available for sale, fair value total 721 893
Available for sale, gross unrealized losses total 2 2
Non-U.S. sovereign, supranational and non-U.S. agency    
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]    
Available for sale, fair value less than 12 months 2,694 4,695
Available for sale, gross unrealized losses less than 12 months 2 49
Available for sale, fair value 12 months or longer 2,416 2,695
Available for sale, gross unrealized losses 12 months or longer 14 20
Available for sale, fair value total 5,110 7,390
Available for sale, gross unrealized losses total 16 69
Other    
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]    
Available for sale, fair value less than 12 months 256 312
Available for sale, gross unrealized losses less than 12 months 0 2
Available for sale, fair value 12 months or longer 130 116
Available for sale, gross unrealized losses 12 months or longer 1 2
Available for sale, fair value total 386 428
Available for sale, gross unrealized losses total 1 4
Total asset-backed securities    
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]    
Available for sale, fair value less than 12 months 653 696
Available for sale, gross unrealized losses less than 12 months 0 0
Available for sale, fair value 12 months or longer 0 0
Available for sale, gross unrealized losses 12 months or longer 0 0
Available for sale, fair value total 653 696
Available for sale, gross unrealized losses total 0 0
Student loans    
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]    
Available for sale, fair value less than 12 months 11 12
Available for sale, gross unrealized losses less than 12 months 0 0
Available for sale, fair value 12 months or longer 0 0
Available for sale, gross unrealized losses 12 months or longer 0 0
Available for sale, fair value total 11 12
Available for sale, gross unrealized losses total 0 0
Collateralized loan obligations    
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]    
Available for sale, fair value less than 12 months 642 684
Available for sale, gross unrealized losses less than 12 months 0 0
Available for sale, fair value 12 months or longer 0 0
Available for sale, gross unrealized losses 12 months or longer 0 0
Available for sale, fair value total 642 684
Available for sale, gross unrealized losses total 0 0
State and political subdivisions    
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]    
Available for sale, fair value less than 12 months 4 0
Available for sale, gross unrealized losses less than 12 months 0 0
Available for sale, fair value 12 months or longer 0 26
Available for sale, gross unrealized losses 12 months or longer 0 0
Available for sale, fair value total 4 26
Available for sale, gross unrealized losses total 0 0
Other    
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]    
Available for sale, fair value less than 12 months 3 3
Available for sale, gross unrealized losses less than 12 months 0 0
Available for sale, fair value 12 months or longer 23 49
Available for sale, gross unrealized losses 12 months or longer 1 1
Available for sale, fair value total 26 52
Available for sale, gross unrealized losses total $ 1 $ 1