v3.25.2
Transactions Involving Related Parties - Summary of Balance Sheet Impact of Transactions with Parent and Affiliated Companies (Detail) - USD ($)
$ in Millions
Mar. 31, 2025
Mar. 31, 2024
Other liabilities:    
Operating lease liabilities $ 55 $ 62
Affiliated Entity    
Finance receivables, net:    
Unearned subsidy income (731) (542)
Investment in operating leases, net:    
Unearned subsidy income (1,290) (853)
Due from Parent and affiliated companies 146 137
Debt:    
Due to Parent and affiliated companies 181 153
Other liabilities:    
Accrued benefit expenses 65 64
Operating lease liabilities 8 11
Related party debt    
Debt:    
Related party debt 1,800 0
Accrued interest expense:    
Related party debt $ 11 $ 0