XML 153 R141.htm IDEA: XBRL DOCUMENT v3.25.3
Unsecured Borrowings - Unsecured Long-Term Borrowings after Hedging (Detail) - USD ($)
$ in Millions
Sep. 30, 2025
Dec. 31, 2024
Debt Instrument [Line Items]    
Unsecured long-term borrowings $ 276,914 $ 242,634
Effective weighted average interest rates for unsecured long-term borrowings, after hedging - total 5.35% 5.72%
Effective weighted average interest rates for unsecured long-term borrowings, after hedging fixed rate obligations 3.97% 4.39%
Effective weighted average interest rates for unsecured long-term borrowings, after hedging floating rate obligations 5.50% 5.82%
Fixed-Rate Obligations    
Debt Instrument [Line Items]    
Unsecured long-term borrowings $ 31,870 $ 25,666
Floating-Rate Obligations    
Debt Instrument [Line Items]    
Unsecured long-term borrowings $ 245,044 $ 216,968