Finance Receivables - Schedule of Allowance for Credit Losses on Financing Receivables (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for retail loan losses beginning balance			$ 2,458
Charge-offs			(1,461)		$ (1,754)
Allowance for retail loan losses ending balance	$ 2,736		2,736		2,458
Retail Finance Receivables
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for retail loan losses beginning balance	2,630	$ 2,261	2,400	$ 2,308	2,308
Provision for loan losses	250	293	898	658
Charge-offs	(494)	(439)	(1,461)	(1,255)
Recoveries	257	217	778	652
Foreign currency translation	8	(10)	36	(39)
Allowance for retail loan losses ending balance	$ 2,651	$ 2,323	$ 2,651	$ 2,323	$ 2,400

Amount of foreign currency translation gain (loss) which decreases (increases) allowance for credit loss on financing receivable. Excludes net investment in lease.

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Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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Amount of increase in allowance for credit loss on financing receivable from recovery.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of writeoff of financing receivable, charged against allowance for credit loss.

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Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

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