v3.25.4
Other Liabilities - Components of Other Liabilities (Detail) - USD ($)
$ in Millions
Dec. 31, 2025
Mar. 31, 2025
Other Liabilities [Line Items]    
Dealer payables $ 214 $ 295
Accrued interest expense 592 439
Accounts payable and accrued expenses 343 330
Lease security deposits 46 44
Unearned income, operating leases 311 288
Operating lease liabilities 49 55
Uncertain tax positions 1 114
Other liabilities $ 13 $ 70
Operating Lease, Liability, Statement of Financial Position [Extensible List] Total Total
Nonrelated Party and Affiliated Entity    
Other Liabilities [Line Items]    
Total $ 1,569 $ 1,635