v3.26.3
Variable Interest Entities - Multi-seller conduits (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Variable Interest Entity [Line Items]    
Unfunded lending-related commitments $ 1,934,100 $ 1,817,307
Multi-seller conduits    
Variable Interest Entity [Line Items]    
Commercial paper eliminated in consolidation 2,300 2,200
Multi-seller conduits | Commercial and other    
Variable Interest Entity [Line Items]    
Unfunded lending-related commitments $ 9,600 $ 9,900