Debt - Schedule of Debt Carrying Amount and Fair Value (Details) - USD ($) $ in Millions	1 Months Ended	9 Months Ended
Mar. 31, 2023	Sep. 30, 2023	Dec. 31, 2022
Automotive
Debt Instrument [Line Items]
Finance lease liabilities		$ 469	$ 381
Finance lease liabilities, Fair Value		478	381
Carrying Amount		16,357	17,844
Fair Value		15,129	16,828
Available under credit facility agreements		$ 13,472	$ 15,095
Weighted-average interest rate on outstanding short-term debt		14.20%	6.10%
Weighted-average interest rate on outstanding long-term debt		5.80%	5.80%
Net discount and debt issuance costs		$ 522	$ 525
Automotive \| Secured Debt
Debt Instrument [Line Items]
Carrying Amount		125	124
Fair Value		124	123
Automotive \| Unsecured Debt
Debt Instrument [Line Items]
Carrying Amount		15,764	17,340
Fair Value		14,527	16,323
Automotive \| Level 1
Debt Instrument [Line Items]
Fair Value		14,118	15,971
Automotive \| Level 2
Debt Instrument [Line Items]
Fair Value		1,011	857
GM Financial
Debt Instrument [Line Items]
Carrying Amount		102,515	96,854
Fair Value		100,155	93,738
GM Financial \| Secured Debt
Debt Instrument [Line Items]
Carrying Amount		45,271	42,131
Fair Value		44,817	41,467
GM Financial \| Unsecured Debt
Debt Instrument [Line Items]
Carrying Amount		57,244	54,723
Fair Value		$ 55,338	52,270
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		98,032	91,545
GM Financial \| Level 3
Debt Instrument [Line Items]
Fair Value		$ 2,123	$ 2,192

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

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

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- Definition

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.

+ References

No definition available.

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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

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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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.

+ References

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- Definition

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

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- Definition

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

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