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Derivative Financial Instruments - Balance Sheet Location of GM Financial Unsecured Debt (Details) - Fair Value Hedges - GM Financial - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Derivatives, Fair Value [Line Items]
Carrying Amount of Hedged Items	$ 33,551	$ 28,319
Cumulative Amount of Fair Value Hedging Adjustments	1,029	781
Cumulative fair value adjustment on discontinued hedging relationships	872
Short-term Unsecured Debt
Derivatives, Fair Value [Line Items]
Carrying Amount of Hedged Items	3,508	3,048
Cumulative Amount of Fair Value Hedging Adjustments	(8)	2
Long-term Unsecured Debt
Derivatives, Fair Value [Line Items]
Carrying Amount of Hedged Items	30,043	25,271
Cumulative Amount of Fair Value Hedging Adjustments	$ 1,037	$ 779

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- Definition

Derivative Liabilities, Fair Value Adjustment

+ References

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- Definition

Derivative Liabilities, Fair Value Adjustment on Discontinued Hedging Relationships

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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

Amount of liability hedged in fair value hedging relationship.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4EE
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480434/815-10-50-4EE

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