v3.26.3
Borrowings - Narrative (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Short-term Debt [Line Items]    
Short-term borrowings $ 12,415 $ 27,839
FHLB Advances    
Short-term Debt [Line Items]    
Short-term borrowings $ 7,800 $ 22,100