v3.26.1
FAIR VALUE MEASUREMENT - Items Measured at Fair Value on a Recurring Basis (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Assets, Fair Value Disclosure [Abstract]    
Federal funds sold and securities borrowed and purchased under agreements to resell, Netting $ (408,893) $ (388,227)
Trading account assets 593,473 537,139
Netting agreements (406,175) (406,408)
Netting of cash collateral received (27,603) (27,471)
Trading derivatives 67,189 55,434
Investments 444,164 444,229
Held at fair value 8,523 6,855
Liabilities, Fair Value Disclosure [Abstract]    
Federal funds purchased and securities loaned and sold under agreements to repurchase, Netting (408,893) (388,227)
Netting agreements (406,175) (406,408)
Netting of cash collateral paid (16,150) (20,629)
Total derivative liabilities 63,131 58,214
Fair Value Measured at Net Asset Value Per Share    
Liabilities, Fair Value Disclosure [Abstract]    
Investments measured at net asset value excluded from Level 3 41 37
Recurring    
Assets, Fair Value Disclosure [Abstract]    
Federal funds sold and securities borrowed and purchased under agreements to resell 590,285 591,149
Federal funds sold and securities borrowed and purchased under agreements to resell, Netting (400,296) (385,039)
Federal funds sold and securities borrowed and purchased under agreements to resell 189,989 206,110
Investments 258,540 247,604
Held at fair value 8,523 6,855
Mortgage servicing rights 766 759
Assets before netting 1,903,637 1,834,066
Netting, Assets, total of netting agreements and cash collateral received (834,074) (818,918)
Total assets 1,069,563 1,015,148
Liabilities, Fair Value Disclosure [Abstract]    
Interest-bearing deposits 4,375 4,222
Federal funds purchased and securities loaned and sold under agreements to repurchase, Gross 491,875 427,036
Federal funds purchased and securities loaned and sold under agreements to repurchase, Netting (259,827) (227,614)
Federal funds purchased and securities loaned and sold under agreements to repurchase 232,048 199,422
Securities sold, not yet purchased 122,125 104,574
Trading liabilities 122,135 104,584
Short-term borrowings 26,719 21,567
Long-term debt 135,058 130,726
Total liabilities, Gross 1,271,837 1,178,878
Total liabilities, Netting (682,152) (654,651)
Total liabilities 589,685 524,227
Recurring | Trading account liabilities    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 485,456 485,251
Total trading derivatives and cash collateral, liability 485,456 485,251
Netting agreements (406,175) (406,408)
Netting of cash collateral paid (16,150) (20,629)
Netting, Liabilities, total of netting agreements and cash collateral received (422,325) (427,037)
Total derivative liabilities 63,131 58,214
Recurring | Trading account liabilities | Interest rate contracts    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 179,548 217,372
Recurring | Trading account liabilities | Foreign exchange contracts    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 179,886 152,864
Recurring | Trading account liabilities | Equity contracts    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 86,922 79,201
Recurring | Trading account liabilities | Commodity contracts    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 29,119 24,582
Recurring | Trading account liabilities | Credit derivatives    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 9,981 11,232
Recurring | Other financial liabilities measured on a recurring basis    
Liabilities, Fair Value Disclosure [Abstract]    
Netting of cash collateral paid   0
Non-trading derivatives and other financial liabilities measured on a recurring basis, gross 6,219 5,492
Total other assets and cash collateral, gross 6,219 5,492
Recurring | Other trading liabilities    
Liabilities, Fair Value Disclosure [Abstract]    
Trading liabilities 10 10
Recurring | Mortgage-backed securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 101,856 94,005
Investments 42,135 37,732
Recurring | Mortgage securitizations - U.S. agency-sponsored    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 99,956 92,456
Investments 41,171 36,756
Recurring | Residential    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 1,035 897
Investments 964 976
Recurring | Commercial    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 865 652
Recurring | U.S. Treasury and federal agency securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 153,326 143,722
Investments 45,644 35,465
Recurring | State and municipal    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 170 172
Investments 1,403 1,537
Recurring | Foreign government    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 147,458 123,391
Investments 160,612 163,107
Recurring | Corporate    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 24,459 21,843
Investments 3,634 4,691
Recurring | Equity securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 68,934 70,383
Investments 330 475
Recurring | Asset-backed securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 2,136 2,533
Investments 1,163 1,073
Recurring | Other debt securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 27,945 25,656
Investments 3,231 3,115
Recurring | Non-marketable equity securities    
Assets, Fair Value Disclosure [Abstract]    
Investments 388 409
Recurring | Trading mortgage-backed securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 526,284 481,705
Recurring | Trading account derivatives    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 500,967 489,313
Trading derivative, asset, gross net cash collateral paid 500,967 489,313
Netting agreements (406,175) (406,408)
Netting of cash collateral received (27,603) (27,471)
Total trading derivatives, netting (433,778) (433,879)
Trading derivatives 67,189 55,434
Recurring | Trading account derivatives | Interest rate contracts    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 190,746 225,911
Recurring | Trading account derivatives | Foreign exchange contracts    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 195,139 161,684
Recurring | Trading account derivatives | Equity contracts    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 76,747 69,307
Recurring | Trading account derivatives | Commodity contracts    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 28,236 22,688
Recurring | Trading account derivatives | Credit derivatives    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 10,099 9,723
Recurring | Other financial assets    
Assets, Fair Value Disclosure [Abstract]    
Total trading derivatives, netting   0
Total other assets and cash collateral, gross 18,272 16,681
Other assets 18,272 16,681
Recurring | Level 1    
Assets, Fair Value Disclosure [Abstract]    
Federal funds sold and securities borrowed and purchased under agreements to resell 0 485
Investments 125,407 119,112
Held at fair value 0 0
Mortgage servicing rights 0 0
Assets before netting $ 437,087 $ 395,551
Total as a percentage of gross assets 23.00% 21.50%
Liabilities, Fair Value Disclosure [Abstract]    
Interest-bearing deposits $ 0 $ 0
Federal funds purchased and securities loaned and sold under agreements to repurchase, Gross 0 0
Securities sold, not yet purchased 105,484 89,352
Trading liabilities 105,484 89,352
Short-term borrowings 0 0
Long-term debt 0 0
Total liabilities, Gross $ 111,777 $ 94,843
Total as a percentage of gross liabilities 8.80% 8.00%
Recurring | Level 1 | Trading account liabilities    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability $ 198 $ 54
Recurring | Level 1 | Trading account liabilities | Interest rate contracts    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 35 5
Recurring | Level 1 | Trading account liabilities | Foreign exchange contracts    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 0 0
Recurring | Level 1 | Trading account liabilities | Equity contracts    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 163 49
Recurring | Level 1 | Trading account liabilities | Commodity contracts    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 0 0
Recurring | Level 1 | Trading account liabilities | Credit derivatives    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 0 0
Recurring | Level 1 | Other financial liabilities measured on a recurring basis    
Liabilities, Fair Value Disclosure [Abstract]    
Other liabilities, gross 6,095 5,437
Recurring | Level 1 | Other trading liabilities    
Liabilities, Fair Value Disclosure [Abstract]    
Trading liabilities 0 0
Recurring | Level 1 | Mortgage-backed securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 0 0
Investments 0 0
Recurring | Level 1 | Mortgage securitizations - U.S. agency-sponsored    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 0 0
Investments 0 0
Recurring | Level 1 | Residential    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 0 0
Investments 0 0
Recurring | Level 1 | Commercial    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 0 0
Recurring | Level 1 | U.S. Treasury and federal agency securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 149,463 140,671
Investments 45,644 35,465
Recurring | Level 1 | State and municipal    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 0 0
Investments 0 0
Recurring | Level 1 | Foreign government    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 91,774 65,966
Investments 77,098 80,048
Recurring | Level 1 | Corporate    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 2,139 1,161
Investments 2,303 3,193
Recurring | Level 1 | Equity securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 61,620 61,986
Investments 324 342
Recurring | Level 1 | Asset-backed securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 0 0
Investments 0 0
Recurring | Level 1 | Other debt securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 91 0
Investments 38 64
Recurring | Level 1 | Non-marketable equity securities    
Assets, Fair Value Disclosure [Abstract]    
Investments 0 0
Recurring | Level 1 | Trading mortgage-backed securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 305,087 269,784
Recurring | Level 1 | Trading account derivatives    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 128 40
Recurring | Level 1 | Trading account derivatives | Interest rate contracts    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 41 9
Recurring | Level 1 | Trading account derivatives | Foreign exchange contracts    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 0 0
Recurring | Level 1 | Trading account derivatives | Equity contracts    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 87 31
Recurring | Level 1 | Trading account derivatives | Commodity contracts    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 0 0
Recurring | Level 1 | Trading account derivatives | Credit derivatives    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 0 0
Recurring | Level 1 | Other financial assets    
Assets, Fair Value Disclosure [Abstract]    
Other assets, gross 6,465 6,130
Recurring | Level 2    
Assets, Fair Value Disclosure [Abstract]    
Federal funds sold and securities borrowed and purchased under agreements to resell 590,236 590,615
Investments 131,972 127,076
Held at fair value 8,331 6,733
Mortgage servicing rights 0 0
Assets before netting $ 1,454,897 $ 1,427,986
Total as a percentage of gross assets 76.40% 77.90%
Liabilities, Fair Value Disclosure [Abstract]    
Interest-bearing deposits $ 4,138 $ 3,983
Federal funds purchased and securities loaned and sold under agreements to repurchase, Gross 490,962 426,084
Securities sold, not yet purchased 16,516 15,177
Trading liabilities 16,526 15,187
Short-term borrowings 26,422 21,275
Long-term debt 110,915 106,767
Total liabilities, Gross $ 1,124,771 $ 1,048,863
Total as a percentage of gross liabilities 88.40% 89.00%
Recurring | Level 2 | Trading account liabilities    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability $ 475,684 $ 475,512
Recurring | Level 2 | Trading account liabilities | Interest rate contracts    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 177,346 215,562
Recurring | Level 2 | Trading account liabilities | Foreign exchange contracts    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 179,154 152,202
Recurring | Level 2 | Trading account liabilities | Equity contracts    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 82,173 74,365
Recurring | Level 2 | Trading account liabilities | Commodity contracts    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 28,041 23,713
Recurring | Level 2 | Trading account liabilities | Credit derivatives    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 8,970 9,670
Recurring | Level 2 | Other financial liabilities measured on a recurring basis    
Liabilities, Fair Value Disclosure [Abstract]    
Other liabilities, gross 124 55
Recurring | Level 2 | Other trading liabilities    
Liabilities, Fair Value Disclosure [Abstract]    
Trading liabilities 10 10
Recurring | Level 2 | Mortgage-backed securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 101,262 93,469
Investments 42,103 37,701
Recurring | Level 2 | Mortgage securitizations - U.S. agency-sponsored    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 99,527 92,074
Investments 41,139 36,725
Recurring | Level 2 | Residential    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 941 798
Investments 964 976
Recurring | Level 2 | Commercial    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 794 597
Recurring | Level 2 | U.S. Treasury and federal agency securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 3,863 3,051
Investments 0 0
Recurring | Level 2 | State and municipal    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 169 171
Investments 992 1,033
Recurring | Level 2 | Foreign government    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 55,443 57,390
Investments 83,494 83,034
Recurring | Level 2 | Corporate    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 22,116 20,412
Investments 1,023 1,183
Recurring | Level 2 | Equity securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 6,965 8,110
Investments 4 2
Recurring | Level 2 | Asset-backed securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 1,957 2,308
Investments 1,163 1,072
Recurring | Level 2 | Other debt securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 27,362 25,243
Investments 3,193 3,051
Recurring | Level 2 | Non-marketable equity securities    
Assets, Fair Value Disclosure [Abstract]    
Investments 0 0
Recurring | Level 2 | Trading mortgage-backed securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 219,137 210,154
Recurring | Level 2 | Trading account derivatives    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 493,414 482,857
Recurring | Level 2 | Trading account derivatives | Interest rate contracts    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 188,352 224,077
Recurring | Level 2 | Trading account derivatives | Foreign exchange contracts    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 194,501 161,072
Recurring | Level 2 | Trading account derivatives | Equity contracts    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 74,892 67,453
Recurring | Level 2 | Trading account derivatives | Commodity contracts    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 26,803 21,675
Recurring | Level 2 | Trading account derivatives | Credit derivatives    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 8,866 8,580
Recurring | Level 2 | Other financial assets    
Assets, Fair Value Disclosure [Abstract]    
Other assets, gross 11,807 10,551
Recurring | Level 3    
Assets, Fair Value Disclosure [Abstract]    
Federal funds sold and securities borrowed and purchased under agreements to resell 49 49
Investments 1,161 1,416
Held at fair value 192 122
Mortgage servicing rights 766 759
Assets before netting $ 11,653 $ 10,529
Total as a percentage of gross assets 0.60% 0.60%
Liabilities, Fair Value Disclosure [Abstract]    
Interest-bearing deposits $ 237 $ 239
Federal funds purchased and securities loaned and sold under agreements to repurchase, Gross 913 952
Securities sold, not yet purchased 125 45
Trading liabilities 125 45
Short-term borrowings 297 292
Long-term debt 24,143 23,959
Total liabilities, Gross $ 35,289 $ 35,172
Total as a percentage of gross liabilities 2.80% 3.00%
Recurring | Level 3 | Trading account liabilities    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability $ 9,574 $ 9,685
Recurring | Level 3 | Trading account liabilities | Interest rate contracts    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 2,167 1,805
Recurring | Level 3 | Trading account liabilities | Foreign exchange contracts    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 732 662
Recurring | Level 3 | Trading account liabilities | Equity contracts    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 4,586 4,787
Recurring | Level 3 | Trading account liabilities | Commodity contracts    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 1,078 869
Recurring | Level 3 | Trading account liabilities | Credit derivatives    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 1,011 1,562
Recurring | Level 3 | Other financial liabilities measured on a recurring basis    
Liabilities, Fair Value Disclosure [Abstract]    
Other liabilities, gross 0 0
Recurring | Level 3 | Other trading liabilities    
Liabilities, Fair Value Disclosure [Abstract]    
Trading liabilities 0 0
Recurring | Level 3 | Mortgage-backed securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 594 536
Investments 32 31
Recurring | Level 3 | Mortgage securitizations - U.S. agency-sponsored    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 429 382
Investments 32 31
Recurring | Level 3 | Residential    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 94 99
Investments 0 0
Recurring | Level 3 | Commercial    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 71 55
Recurring | Level 3 | U.S. Treasury and federal agency securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 0 0
Investments 0 0
Recurring | Level 3 | State and municipal    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 1 1
Investments 411 504
Recurring | Level 3 | Foreign government    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 241 35
Investments 20 25
Recurring | Level 3 | Corporate    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 204 270
Investments 308 315
Recurring | Level 3 | Equity securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 349 287
Investments 2 131
Recurring | Level 3 | Asset-backed securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 179 225
Investments 0 1
Recurring | Level 3 | Other debt securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 492 413
Investments 0 0
Recurring | Level 3 | Non-marketable equity securities    
Assets, Fair Value Disclosure [Abstract]    
Investments 388 409
Recurring | Level 3 | Trading mortgage-backed securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 2,060 1,767
Recurring | Level 3 | Trading account derivatives    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 7,425 6,416
Recurring | Level 3 | Trading account derivatives | Interest rate contracts    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 2,353 1,825
Recurring | Level 3 | Trading account derivatives | Foreign exchange contracts    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 638 612
Recurring | Level 3 | Trading account derivatives | Equity contracts    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 1,768 1,823
Recurring | Level 3 | Trading account derivatives | Commodity contracts    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 1,433 1,013
Recurring | Level 3 | Trading account derivatives | Credit derivatives    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 1,233 1,143
Recurring | Level 3 | Other financial assets    
Assets, Fair Value Disclosure [Abstract]    
Other assets, gross $ 0 $ 0