Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Affiliated Entity [Member]
Related Party Transaction [Line Items]
Subvention receivable	$ 639		$ 727
Leased vehicle subvention earned	835	$ 798
Affiliated Entity [Member] \| Retail Finance Receivables [Member]
Related Party Transaction [Line Items]
Finance receivables, net due	121		134
Interest subvention earned	131	112
Affiliated Entity [Member] \| Commercial Finance Receivables [Member]
Related Party Transaction [Line Items]
Finance receivables, net due	430		445
Commercial loan funding payable	57		$ 61
Interest subvention earned	17	18
Parent Company [Member]
Related Party Transaction [Line Items]
Revenue from related parties	$ 1,100	$ 600

Related Party, Leased Vehicle Income Earned

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- Definition

Amount of interest income earned from interest-bearing assets owed to the entity by related party.

+ References

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The amount for notes payable (written promise to pay), due to related parties.

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Net amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.

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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.

+ References

No definition available.

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Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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