v3.26.1
SECURITIES - Schedule of Investments (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Debt Securities, Available-for-Sale, Fair Value to Amortized Cost, after Allowance for Credit Loss [Abstract]    
Fair Value [1] $ 37,448 $ 35,697
Debt Securities, Held-to-Maturity, Fair Value to Amortized Cost, after Allowance for Credit Loss [Abstract]    
Amortized Cost [1] 7,638 7,933
Gross Unrealized Gains 0 2
Gross Unrealized Gains (854) (785)
Fair Value 6,784 7,150
Total equity securities, at cost, Amortized Cost 991 807
Equity securities, at cost, fair value 991 807
Equity Securities, Amortized Cost 386 317
Equity Securities, Fair Value 386 317
Portfolio level basis adjustments excluded from amortized cost (40) 17
Total debt securities available for sale, at fair value    
Debt Securities, Available-for-Sale, Fair Value to Amortized Cost, after Allowance for Credit Loss [Abstract]    
Amortized Cost 38,949 36,900
Gross Unrealized Gains 126 225
Gross Unrealized Losses (1,627) (1,428)
Fair Value 37,448 35,697
U.S. Treasury and other    
Debt Securities, Available-for-Sale, Fair Value to Amortized Cost, after Allowance for Credit Loss [Abstract]    
Amortized Cost 4,499 3,163
Gross Unrealized Gains 3 10
Gross Unrealized Losses (71) (50)
Fair Value 4,431 3,123
State and political subdivisions    
Debt Securities, Available-for-Sale, Fair Value to Amortized Cost, after Allowance for Credit Loss [Abstract]    
Amortized Cost 1 1
Gross Unrealized Gains 0 0
Gross Unrealized Losses 0 0
Fair Value 1 1
Total mortgage-backed securities    
Debt Securities, Available-for-Sale, Fair Value to Amortized Cost, after Allowance for Credit Loss [Abstract]    
Amortized Cost 34,409 33,647
Gross Unrealized Gains 123 215
Gross Unrealized Losses (1,556) (1,378)
Fair Value 32,976 32,484
Debt Securities, Held-to-Maturity, Fair Value to Amortized Cost, after Allowance for Credit Loss [Abstract]    
Amortized Cost 7,343 7,595
Gross Unrealized Gains 0 2
Gross Unrealized Gains (852) (785)
Fair Value 6,491 6,812
Federal agencies and U.S. government sponsored entities    
Debt Securities, Available-for-Sale, Fair Value to Amortized Cost, after Allowance for Credit Loss [Abstract]    
Amortized Cost 34,159 33,379
Gross Unrealized Gains 123 215
Gross Unrealized Losses (1,554) (1,374)
Fair Value 32,728 32,220
Debt Securities, Held-to-Maturity, Fair Value to Amortized Cost, after Allowance for Credit Loss [Abstract]    
Amortized Cost 7,343 7,595
Gross Unrealized Gains 0 2
Gross Unrealized Gains (852) (785)
Fair Value 6,491 6,812
Other/non-agency    
Debt Securities, Available-for-Sale, Fair Value to Amortized Cost, after Allowance for Credit Loss [Abstract]    
Amortized Cost 250 268
Gross Unrealized Gains 0 0
Gross Unrealized Losses (2) (4)
Fair Value 248 264
Collateralized loan obligations    
Debt Securities, Available-for-Sale, Fair Value to Amortized Cost, after Allowance for Credit Loss [Abstract]    
Amortized Cost 40 89
Gross Unrealized Gains 0 0
Gross Unrealized Losses 0 0
Fair Value 40 89
Asset-backed securities    
Debt Securities, Held-to-Maturity, Fair Value to Amortized Cost, after Allowance for Credit Loss [Abstract]    
Amortized Cost 295 338
Gross Unrealized Gains 0 0
Gross Unrealized Gains (2) 0
Fair Value $ 293 $ 338
[1] Includes only collateral pledged by the Company where counterparties have the right to sell or pledge the collateral.