Variable Interest Entities (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Variable Interest Entity [Line Items]
GM Financial equipment on operating leases, net	$ 37,969	$ 38,750
GM Financial [Member]
Variable Interest Entity [Line Items]
GM Financial receivables, net of fees – current	26,320	26,601
GM Financial receivables, net of fees – non-current	25,948	26,355
GM Financial short-term debt and current portion of long-term debt	43,331	35,503
GM Financial long-term debt	52,858	53,435
Consolidated VIE [Member] \| GM Financial [Member]
Variable Interest Entity [Line Items]
Restricted cash – current	2,047	2,202
Restricted cash – non-current	410	441
GM Financial receivables, net of fees – current	21,449	19,081
GM Financial receivables, net of fees – non-current	19,249	15,921
GM Financial short-term debt and current portion of long-term debt	30,962	23,952
GM Financial long-term debt	15,062	15,819
Consolidated VIE [Member] \| GM Financial [Member] \| Equipment Leased to Other Party [Member]
Variable Interest Entity [Line Items]
GM Financial equipment on operating leases, net	$ 18,279	$ 14,464

Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

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Amount of long-term debt and lease obligation, classified as noncurrent.

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Amount, after allowance for credit loss, of financing receivable, classified as current. Includes, but is not limited to, notes and loan receivable.

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Amount, after allowance for credit loss, of financing receivable, classified as noncurrent.

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- Definition

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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The current cash, cash equivalents and investments that are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. Includes current cash equivalents and investments that are similarly restricted as to withdrawal, usage or disposal.

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The noncurrent cash, cash equivalents and investments that is restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits classified as long-term; that is not expected to be released from such existing restrictions within one year of the balance sheet date or operating cycle, whichever is longer. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. Includes noncurrent cash equivalents and investments that are similarly restricted as to withdrawal, usage or disposal.

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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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