Segment Reporting and Geographic Information - Operations Reporting by Assets (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Finance receivables, net	$ 52,512	$ 42,172
Leased vehicles, net	43,559	42,882	$ 34,300
Total assets	109,920	97,015
North America [Member]
Segment Reporting Information [Line Items]
Finance receivables, net	45,711	35,436
Leased vehicles, net	43,396	42,753
Total assets	100,176	87,618
International [Member]
Segment Reporting Information [Line Items]
Finance receivables, net	6,801	6,736
Leased vehicles, net	163	129
Total assets	$ 9,744	$ 9,397

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

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The amount of property, by major property class, net of accumulated depreciation, subject to or available for lease as of the balance sheet date.

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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.

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