Line of Credit Facility, Funding Period

No definition available.

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Namespace Prefix:	gm_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

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Balance Type:	credit
Period Type:	instant

- 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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+ Details

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- Definition

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

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

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Data Type:	dtr-types:percentItemType
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Period Type:	instant

- 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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- Details

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Period Type:

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- Details

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Period Type:

- Details

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Period Type:

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Debt - Narrative (Details) - USD ($) $ in Billions	1 Months Ended		9 Months Ended
Debt - Narrative (Details) - USD ($) $ in Billions	Aug. 31, 2026	Mar. 31, 2026	Sep. 30, 2026
Inventory Banking Facility \| Line of Credit \| Revolving Credit Facility
Debt Instrument [Line Items]
Aggregate borrowing capacity	$ 4.5
Funding period	12 months
Interest rate (percent)	1.55%
Unsecured Debt \| Senior Notes \| GM Financial
Debt Instrument [Line Items]
Principal amount			$ 5.6
Weighted average interest rate (percent)			4.90%
Unsecured Debt \| $2.0 Billion Dollar Revolving Credit Facility \| Line of Credit \| GM Financial
Debt Instrument [Line Items]
Aggregate borrowing capacity		$ 2.0	$ 2.0
Debt term		364 days	364 days
Secured Debt \| Line of Credit \| GM Financial \| Revolving Credit Facility
Debt Instrument [Line Items]
Aggregate borrowing capacity			$ 19.2
Secured Debt \| Securitization Notes Payable \| Notes Payable, Other Payables \| GM Financial
Debt Instrument [Line Items]
Principal amount			$ 11.5
Weighted average interest rate (percent)			3.82%