v3.26.1
Transactions Involving Related Parties - Summary of Balance Sheet Impact of Transactions with Parent and Affiliated Companies (Detail) - USD ($)
$ in Millions
Jun. 30, 2026
Mar. 31, 2026
Other liabilities:    
Dividend payable $ 0 $ 599
Operating lease liabilities 45 47
Affiliated Entity    
Finance receivables, net:    
Unearned subsidy income (790) (764)
Investment in operating leases, net:    
Unearned subsidy income (1,091) (1,062)
Due from Parent and affiliated companies 187 147
Liabilities    
Due to Parent and affiliated companies 141 180
Other liabilities:    
Accrued benefit expenses 67 66
Dividend payable 0 599
Operating lease liabilities $ 5 $ 6