v3.26.1
Securities - Schedule of Gross Unrealized Losses on Investment Securities AFS (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Debt Securities, Available-for-sale [Line Items]    
Less than 12 months, fair value $ 13,306 $ 1,597
Less than 12 months, gross unrealized losses (160) (21)
12 months or longer, fair value 2,277 1,549
12 months or longer, gross unrealized losses (121) (142)
Total, fair value 15,583 3,146
Total, gross unrealized losses (281) (163)
U.S. Treasury securities    
Debt Securities, Available-for-sale [Line Items]    
Less than 12 months, fair value 1,439 205
Less than 12 months, gross unrealized losses (19) 0
12 months or longer, fair value 886 0
12 months or longer, gross unrealized losses (3) 0
Total, fair value 2,325 205
Total, gross unrealized losses (22) 0
U.S. Government agency securities    
Debt Securities, Available-for-sale [Line Items]    
Less than 12 months, fair value 0 0
Less than 12 months, gross unrealized losses 0 0
12 months or longer, fair value 186 191
12 months or longer, gross unrealized losses (17) (15)
Total, fair value 186 191
Total, gross unrealized losses (17) (15)
Mortgage-backed securities    
Debt Securities, Available-for-sale [Line Items]    
Less than 12 months, fair value 11,802 506
Less than 12 months, gross unrealized losses (140) (1)
12 months or longer, fair value 724 876
12 months or longer, gross unrealized losses (65) (68)
Total, fair value 12,526 1,382
Total, gross unrealized losses (205) (69)
State and municipal securities    
Debt Securities, Available-for-sale [Line Items]    
Less than 12 months, fair value 20 871
Less than 12 months, gross unrealized losses 0 (18)
12 months or longer, fair value 338 341
12 months or longer, gross unrealized losses (26) (49)
Total, fair value 358 1,212
Total, gross unrealized losses (26) (67)
Corporate notes and other    
Debt Securities, Available-for-sale [Line Items]    
Less than 12 months, fair value 45 15
Less than 12 months, gross unrealized losses (1) (2)
12 months or longer, fair value 143 141
12 months or longer, gross unrealized losses (10) (10)
Total, fair value 188 156
Total, gross unrealized losses $ (11) $ (12)