v3.26.1
Derivative Instruments and Hedging Activities - Notionals of Derivative Contracts (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Derivatives, Notional Amount    
Derivative assets $ 19,441,000 $ 15,847,000
Derivative liabilities 20,525,000 16,648,000
Designated as accounting hedges    
Derivatives, Notional Amount    
Derivative assets 116,000 197,000
Derivative liabilities 351,000 259,000
Designated as accounting hedges | Interest rate    
Derivatives, Notional Amount    
Derivative assets 98,000 183,000
Derivative liabilities 340,000 246,000
Designated as accounting hedges | Foreign exchange    
Derivatives, Notional Amount    
Derivative assets 18,000 14,000
Derivative liabilities 10,000 13,000
Designated as accounting hedges | Equity    
Derivatives, Notional Amount    
Derivative liabilities 1,000  
Economic hedges of loans | Credit    
Derivatives, Notional Amount    
Derivative assets 2,000 0
Derivative liabilities 29,000 19,000
Economic hedges of loans | Equity    
Derivatives, Notional Amount    
Derivative liabilities 5,000  
Other derivatives | Interest rate    
Derivatives, Notional Amount    
Derivative assets 12,169,000 9,496,000
Derivative liabilities 12,638,000 9,699,000
Other derivatives | Credit    
Derivatives, Notional Amount    
Derivative assets 486,000 418,000
Derivative liabilities 489,000 393,000
Other derivatives | Foreign exchange    
Derivatives, Notional Amount    
Derivative assets 4,421,000 3,889,000
Derivative liabilities 4,324,000 4,043,000
Other derivatives | Equity    
Derivatives, Notional Amount    
Derivative assets 2,000,000 1,626,000
Derivative liabilities 2,457,000 2,030,000
Other derivatives | Commodity and other    
Derivatives, Notional Amount    
Derivative assets 247,000 221,000
Derivative liabilities 232,000 205,000
Not designated as accounting hedges    
Derivatives, Notional Amount    
Derivative assets 19,325,000 15,650,000
Derivative liabilities 20,174,000 16,389,000
Bilateral OTC    
Derivatives, Notional Amount    
Derivative assets 10,374,000 9,634,000
Derivative liabilities 10,528,000 10,134,000
Bilateral OTC | Designated as accounting hedges    
Derivatives, Notional Amount    
Derivative assets 14,000 10,000
Derivative liabilities 11,000 14,000
Bilateral OTC | Designated as accounting hedges | Interest rate    
Derivatives, Notional Amount    
Derivative assets 0 0
Derivative liabilities 2,000 3,000
Bilateral OTC | Designated as accounting hedges | Foreign exchange    
Derivatives, Notional Amount    
Derivative assets 14,000 10,000
Derivative liabilities 8,000 11,000
Bilateral OTC | Designated as accounting hedges | Equity    
Derivatives, Notional Amount    
Derivative liabilities 1,000  
Bilateral OTC | Economic hedges of loans | Credit    
Derivatives, Notional Amount    
Derivative assets 0 0
Derivative liabilities 2,000 2,000
Bilateral OTC | Economic hedges of loans | Equity    
Derivatives, Notional Amount    
Derivative liabilities 5,000  
Bilateral OTC | Other derivatives | Interest rate    
Derivatives, Notional Amount    
Derivative assets 4,810,000 4,779,000
Derivative liabilities 4,996,000 5,041,000
Bilateral OTC | Other derivatives | Credit    
Derivatives, Notional Amount    
Derivative assets 303,000 248,000
Derivative liabilities 310,000 222,000
Bilateral OTC | Other derivatives | Foreign exchange    
Derivatives, Notional Amount    
Derivative assets 4,101,000 3,641,000
Derivative liabilities 4,027,000 3,791,000
Bilateral OTC | Other derivatives | Equity    
Derivatives, Notional Amount    
Derivative assets 994,000 813,000
Derivative liabilities 1,054,000 945,000
Bilateral OTC | Other derivatives | Commodity and other    
Derivatives, Notional Amount    
Derivative assets 152,000 143,000
Derivative liabilities 123,000 119,000
Bilateral OTC | Not designated as accounting hedges    
Derivatives, Notional Amount    
Derivative assets 10,360,000 9,624,000
Derivative liabilities 10,517,000 10,120,000
Cleared OTC    
Derivatives, Notional Amount    
Derivative assets 7,052,000 4,738,000
Derivative liabilities 7,411,000 4,609,000
Cleared OTC | Designated as accounting hedges    
Derivatives, Notional Amount    
Derivative assets 102,000 187,000
Derivative liabilities 340,000 245,000
Cleared OTC | Designated as accounting hedges | Interest rate    
Derivatives, Notional Amount    
Derivative assets 98,000 183,000
Derivative liabilities 338,000 243,000
Cleared OTC | Designated as accounting hedges | Foreign exchange    
Derivatives, Notional Amount    
Derivative assets 4,000 4,000
Derivative liabilities 2,000 2,000
Cleared OTC | Designated as accounting hedges | Equity    
Derivatives, Notional Amount    
Derivative liabilities 0  
Cleared OTC | Economic hedges of loans | Credit    
Derivatives, Notional Amount    
Derivative assets 2,000 0
Derivative liabilities 27,000 17,000
Cleared OTC | Economic hedges of loans | Equity    
Derivatives, Notional Amount    
Derivative liabilities 0  
Cleared OTC | Other derivatives | Interest rate    
Derivatives, Notional Amount    
Derivative assets 6,460,000 4,143,000
Derivative liabilities 6,587,000 3,943,000
Cleared OTC | Other derivatives | Credit    
Derivatives, Notional Amount    
Derivative assets 183,000 170,000
Derivative liabilities 179,000 171,000
Cleared OTC | Other derivatives | Foreign exchange    
Derivatives, Notional Amount    
Derivative assets 305,000 238,000
Derivative liabilities 278,000 233,000
Cleared OTC | Other derivatives | Equity    
Derivatives, Notional Amount    
Derivative assets 0 0
Derivative liabilities 0 0
Cleared OTC | Other derivatives | Commodity and other    
Derivatives, Notional Amount    
Derivative assets 0 0
Derivative liabilities 0 0
Cleared OTC | Not designated as accounting hedges    
Derivatives, Notional Amount    
Derivative assets 6,950,000 4,551,000
Derivative liabilities 7,071,000 4,364,000
Exchange- Traded    
Derivatives, Notional Amount    
Derivative assets 2,015,000 1,475,000
Derivative liabilities 2,586,000 1,905,000
Exchange- Traded | Designated as accounting hedges    
Derivatives, Notional Amount    
Derivative assets 0 0
Derivative liabilities 0 0
Exchange- Traded | Designated as accounting hedges | Interest rate    
Derivatives, Notional Amount    
Derivative assets 0 0
Derivative liabilities 0 0
Exchange- Traded | Designated as accounting hedges | Foreign exchange    
Derivatives, Notional Amount    
Derivative assets 0 0
Derivative liabilities 0 0
Exchange- Traded | Designated as accounting hedges | Equity    
Derivatives, Notional Amount    
Derivative liabilities 0  
Exchange- Traded | Economic hedges of loans | Credit    
Derivatives, Notional Amount    
Derivative assets 0 0
Derivative liabilities 0 0
Exchange- Traded | Economic hedges of loans | Equity    
Derivatives, Notional Amount    
Derivative liabilities 0  
Exchange- Traded | Other derivatives | Interest rate    
Derivatives, Notional Amount    
Derivative assets 899,000 574,000
Derivative liabilities 1,055,000 715,000
Exchange- Traded | Other derivatives | Credit    
Derivatives, Notional Amount    
Derivative assets 0 0
Derivative liabilities 0 0
Exchange- Traded | Other derivatives | Foreign exchange    
Derivatives, Notional Amount    
Derivative assets 15,000 10,000
Derivative liabilities 19,000 19,000
Exchange- Traded | Other derivatives | Equity    
Derivatives, Notional Amount    
Derivative assets 1,006,000 813,000
Derivative liabilities 1,403,000 1,085,000
Exchange- Traded | Other derivatives | Commodity and other    
Derivatives, Notional Amount    
Derivative assets 95,000 78,000
Derivative liabilities 109,000 86,000
Exchange- Traded | Not designated as accounting hedges    
Derivatives, Notional Amount    
Derivative assets 2,015,000 1,475,000
Derivative liabilities $ 2,586,000 $ 1,905,000