Line of Credit Facility, Extension Period

No definition available.

Name:	acf_LineOfCreditFacilityExtensionPeriod
Namespace Prefix:	acf_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Line of Credit Facilities, Related Party Facility

+ References

No definition available.

+ Details

Name:	acf_LineofCreditFacilitiesRelatedPartyFacility
Namespace Prefix:	acf_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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.

+ Details

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

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

+ Details

Name:	us-gaap_LineOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of any deferred tax-related balances due to affiliates as of the date of each statement of financial position presented.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 17
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32809-109319

+ Details

Name:	us-gaap_RelatedPartyTaxExpenseDueToAffiliatesDeferred
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- 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.

+ References

No definition available.

+ Details

Name:	us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_CreditFacilityAxis=acf_JuniorSubordinatedRevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=acf_GeneralMotorsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=acf_ThreeYearRevolvingCreditFacilityExpiringApril2022Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=acf_FiveYearRevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=acf_ThreeHundredandSixtyFourDayRevolvingCreditFacilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=acf_ThreeYearRevolvingCreditFacilityExpiringApril2024Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=acf_FiveYearRevolvingCreditFacilityExpiringApril2026Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=acf_CruiseLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=acf_AmendedMay2021CreditAgreementMember
Namespace Prefix:
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Balance Type:
Period Type:

Related Party Transactions - Narrative (Details) - USD ($)	1 Months Ended	3 Months Ended	12 Months Ended
	Apr. 30, 2021	Mar. 31, 2021	Dec. 31, 2021	May 31, 2021	Dec. 31, 2020
Related Party Transaction [Line Items]
Related party tax expense			$ 824,000,000
Junior Subordinated Revolving Credit Facility \| General Motors
Related Party Transaction [Line Items]
Line of credit facilities - GM Related party facility			$ 1,000,000,000
Line of Credit
Related Party Transaction [Line Items]
Debt instrument term			4 years
Line of Credit \| Revolving credit facilities \| General Motors
Related Party Transaction [Line Items]
Total borrowing capacity	$ 15,500,000,000
Line of Credit \| Revolving credit facilities \| General Motors \| Three Year Revolving Credit Facility Expiring April 2022
Related Party Transaction [Line Items]
Total borrowing capacity		$ 4,000,000,000
Debt instrument term		3 years
Line of Credit \| Revolving credit facilities \| General Motors \| Five Year Revolving Credit Facility
Related Party Transaction [Line Items]
Total borrowing capacity	$ 11,200,000,000	$ 10,500,000,000
Debt instrument term	5 years	5 years
Line of Credit \| Revolving credit facilities \| General Motors \| 364-Day Revolving Credit Facility
Related Party Transaction [Line Items]
Total borrowing capacity			$ 2,000,000,000
Debt instrument term			364 days
Line of Credit \| Revolving credit facilities \| General Motors \| Three Year Revolving Credit Facility Expiring April 2024
Related Party Transaction [Line Items]
Total borrowing capacity	$ 4,300,000,000
Debt instrument term	3 years
Line of Credit \| Revolving credit facilities \| General Motors \| Five Year Revolving Credit Facility Expiring April2026
Related Party Transaction [Line Items]
Total borrowing capacity	$ 9,900,000,000
Extension period	3 years
Line of Credit \| Revolving credit facilities \| Cruise, LLC
Related Party Transaction [Line Items]
Long-term line of credit			$ 0		$ 0
Line of Credit \| Amended May 2021 Credit Agreement \| Cruise, LLC
Related Party Transaction [Line Items]
Total borrowing capacity				$ 5,200,000,000