v3.26.1
Derivative Instruments and Hedging Activities - Notionals of Derivative Contracts (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Derivatives, Notional Amount    
Derivative assets $ 21,999,000 $ 15,847,000
Derivative liabilities 23,019,000 16,648,000
Designated as accounting hedges    
Derivatives, Notional Amount    
Derivative assets 145,000 197,000
Derivative liabilities 329,000 259,000
Designated as accounting hedges | Interest rate    
Derivatives, Notional Amount    
Derivative assets 133,000 183,000
Derivative liabilities 311,000 246,000
Designated as accounting hedges | Foreign exchange    
Derivatives, Notional Amount    
Derivative assets 12,000 14,000
Derivative liabilities 17,000 13,000
Designated as accounting hedges | Equity    
Derivatives, Notional Amount    
Derivative liabilities 1,000  
Economic hedges of loans | Credit    
Derivatives, Notional Amount    
Derivative assets 4,000 0
Derivative liabilities 22,000 19,000
Economic hedges of loans | Equity    
Derivatives, Notional Amount    
Derivative liabilities 5,000  
Other derivatives | Interest rate    
Derivatives, Notional Amount    
Derivative assets 14,626,000 9,496,000
Derivative liabilities 15,262,000 9,699,000
Other derivatives | Credit    
Derivatives, Notional Amount    
Derivative assets 541,000 418,000
Derivative liabilities 529,000 393,000
Other derivatives | Foreign exchange    
Derivatives, Notional Amount    
Derivative assets 4,479,000 3,889,000
Derivative liabilities 4,389,000 4,043,000
Other derivatives | Equity    
Derivatives, Notional Amount    
Derivative assets 1,917,000 1,626,000
Derivative liabilities 2,237,000 2,030,000
Other derivatives | Commodity and other    
Derivatives, Notional Amount    
Derivative assets 287,000 221,000
Derivative liabilities 246,000 205,000
Not designated as accounting hedges    
Derivatives, Notional Amount    
Derivative assets 21,854,000 15,650,000
Derivative liabilities 22,690,000 16,389,000
Bilateral OTC    
Derivatives, Notional Amount    
Derivative assets 10,417,000 9,634,000
Derivative liabilities 10,348,000 10,134,000
Bilateral OTC | Designated as accounting hedges    
Derivatives, Notional Amount    
Derivative assets 8,000 10,000
Derivative liabilities 18,000 14,000
Bilateral OTC | Designated as accounting hedges | Interest rate    
Derivatives, Notional Amount    
Derivative assets 0 0
Derivative liabilities 3,000 3,000
Bilateral OTC | Designated as accounting hedges | Foreign exchange    
Derivatives, Notional Amount    
Derivative assets 8,000 10,000
Derivative liabilities 14,000 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 1,000 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 4,794,000 4,779,000
Derivative liabilities 4,889,000 5,041,000
Bilateral OTC | Other derivatives | Credit    
Derivatives, Notional Amount    
Derivative assets 333,000 248,000
Derivative liabilities 334,000 222,000
Bilateral OTC | Other derivatives | Foreign exchange    
Derivatives, Notional Amount    
Derivative assets 4,139,000 3,641,000
Derivative liabilities 4,067,000 3,791,000
Bilateral OTC | Other derivatives | Equity    
Derivatives, Notional Amount    
Derivative assets 966,000 813,000
Derivative liabilities 913,000 945,000
Bilateral OTC | Other derivatives | Commodity and other    
Derivatives, Notional Amount    
Derivative assets 176,000 143,000
Derivative liabilities 120,000 119,000
Bilateral OTC | Not designated as accounting hedges    
Derivatives, Notional Amount    
Derivative assets 10,409,000 9,624,000
Derivative liabilities 10,330,000 10,120,000
Cleared OTC    
Derivatives, Notional Amount    
Derivative assets 9,763,000 4,738,000
Derivative liabilities 10,129,000 4,609,000
Cleared OTC | Designated as accounting hedges    
Derivatives, Notional Amount    
Derivative assets 137,000 187,000
Derivative liabilities 311,000 245,000
Cleared OTC | Designated as accounting hedges | Interest rate    
Derivatives, Notional Amount    
Derivative assets 133,000 183,000
Derivative liabilities 308,000 243,000
Cleared OTC | Designated as accounting hedges | Foreign exchange    
Derivatives, Notional Amount    
Derivative assets 4,000 4,000
Derivative liabilities 3,000 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 3,000 0
Derivative liabilities 20,000 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 9,089,000 4,143,000
Derivative liabilities 9,303,000 3,943,000
Cleared OTC | Other derivatives | Credit    
Derivatives, Notional Amount    
Derivative assets 208,000 170,000
Derivative liabilities 195,000 171,000
Cleared OTC | Other derivatives | Foreign exchange    
Derivatives, Notional Amount    
Derivative assets 326,000 238,000
Derivative liabilities 300,000 233,000
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 9,626,000 4,551,000
Derivative liabilities 9,818,000 4,364,000
Exchange- Traded    
Derivatives, Notional Amount    
Derivative assets 1,819,000 1,475,000
Derivative liabilities 2,542,000 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 743,000 574,000
Derivative liabilities 1,070,000 715,000
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 14,000 10,000
Derivative liabilities 22,000 19,000
Exchange- Traded | Other derivatives | Equity    
Derivatives, Notional Amount    
Derivative assets 951,000 813,000
Derivative liabilities 1,324,000 1,085,000
Exchange- Traded | Other derivatives | Commodity and other    
Derivatives, Notional Amount    
Derivative assets 111,000 78,000
Derivative liabilities 126,000 86,000
Exchange- Traded | Not designated as accounting hedges    
Derivatives, Notional Amount    
Derivative assets 1,819,000 1,475,000
Derivative liabilities $ 2,542,000 $ 1,905,000