Finance Receivables, Net - Additional Information (Details) - USD ($) $ in Millions	Sep. 30, 2022	Mar. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable accrued interest before allowance for credit loss	$ 241	$ 214
Retail Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable accrued interest before allowance for credit loss	208	192
Dealer Products [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable accrued interest before allowance for credit loss	$ 33	$ 22