Debt - Automotive and GM Financial Debt (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
Apr. 30, 2022	Dec. 31, 2022	Dec. 31, 2021
Automotive
Debt Instrument [Line Items]
Finance lease liabilities		$ 381	$ 349
Carrying Amount		17,844	16,818
Finance lease liabilities, Fair Value		381	362
Fair Value		16,828	20,569
Available under credit facility agreements		$ 15,095	$ 15,208
Weighted-average interest rate on outstanding short-term debt		6.10%	9.80%
Weighted-average interest rate on outstanding long-term debt		5.80%	5.80%
Net discount and debt issuance costs		$ 525	$ 512
Automotive \| Secured Debt
Debt Instrument [Line Items]
Total debt		124	192
Fair Value		123	212
Automotive \| Unsecured Debt
Debt Instrument [Line Items]
Total debt		17,340	16,277
Fair Value		16,323	19,995
Automotive \| Level 1
Debt Instrument [Line Items]
Fair Value		15,971	19,085
Automotive \| Level 2
Debt Instrument [Line Items]
Fair Value		857	1,484
GM Financial
Debt Instrument [Line Items]
Total debt		96,854	92,561
Fair Value		93,738	93,758
GM Financial \| Secured Debt
Debt Instrument [Line Items]
Total debt		42,131	39,338
Fair Value		41,467	39,401
GM Financial \| Unsecured Debt
Debt Instrument [Line Items]
Total debt		54,723	53,223
Fair Value		$ 52,270	54,357
GM Financial \| Unsecured Debt \| Line of Credit \| $2.0 Billion Dollar Revolving Credit Facility
Debt Instrument [Line Items]
Debt term	364 days	364 days
Aggregate borrowing capacity	$ 2,000	$ 2,000
GM Financial \| Level 2
Debt Instrument [Line Items]
Fair Value		91,545	92,250
GM Financial \| Level 3
Debt Instrument [Line Items]
Fair Value		$ 2,192	$ 1,508

Debt and Finance Lease Liabilities

No definition available.

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- Definition

Finance Lease Liabilities, Fair Value Disclosure

+ References

No definition available.

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- Definition

Amount of short-term and long-term debt and lease obligation.

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- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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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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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Amount of unamortized debt discount (premium) and debt issuance costs.

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- Definition

Present value of lessee's discounted obligation for lease payments from finance lease.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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- Definition

Weighted average interest rate of long-term debt outstanding calculated at point in time.

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Weighted average interest rate of short-term debt outstanding calculated at point in time.

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