Debt under Vehicle Programs and Borrowing Arrangements - Schedule Of Contractual Maturities (Detail) - Vehicle Programs $ in Millions	Dec. 31, 2025 USD ($)
Debt Instrument [Line Items]
2026	$ 6,289
2027	5,855
2028	3,598
2029	2,698
2030	793
Thereafter	26
Total	19,259
Bank And Bank-Sponsored Facilities
Debt Instrument [Line Items]
2026	2,700
2027	2,600
2028	400
2029	$ 100
Short-term debt, weighted average interest rate, at point in time	4.25%

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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