Debt Under Vehicle Programs And Borrowing Arrangements (Schedule Of Contractual Maturities) (Detail) - Vehicle backed debt $ in Millions	Jun. 30, 2021 USD ($)
Debt Instrument [Line Items]
Within 1 year	$ 2,026
Between 1 and 2 years	3,311
Between 2 and 3 years	1,564
Between 3 and 4 years	1,675
Between 4 and 5 years	1,531
Thereafter	350
Total	10,457
Bank And Bank-Sponsored Facilities
Debt Instrument [Line Items]
Within 1 year	600
Between 1 and 2 years	2,100
Between 2 and 3 years	$ 100

Long-Term Debt, Maturity, after Year Four

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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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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