Debt Under Vehicle Programs And Borrowing Arrangements (Schedule Of Contractual Maturities) (Detail) - Deferred Financing Fees $ in Millions	Mar. 31, 2023 USD ($)
Debt Instrument [Line Items]
Within 1 year	$ 2,489
Between 1 and 2 years	5,803
Between 2 and 3 years	2,596
Between 3 and 4 years	2,071
Between 4 and 5 years	1,414
Thereafter	461
Total	14,834
Bank And Bank-Sponsored Facilities
Debt Instrument [Line Items]
Within 1 year	1,200
Between 1 and 2 years	3,900
Between 2 and 3 years	$ 100

Long-Term Debt, Maturity, after Year Four

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Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in remainder of current fiscal year.

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