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Debt - Narrative (Details) - GM Financial - USD ($) $ in Billions	1 Months Ended	3 Months Ended
	Apr. 27, 2022	Mar. 31, 2022
Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Aggregate borrowing capacity		$ 1.9
Unsecured Debt | Line of Credit | $2.0 Billion Dollar Revolving Credit Facility
Debt Instrument [Line Items]
Debt term		364 days
Aggregate borrowing capacity		$ 2.0
Unsecured Debt | Line of Credit | $2.0 Billion Dollar Revolving Credit Facility | Subsequent Event
Debt Instrument [Line Items]
Debt term	364 days
Aggregate borrowing capacity	$ 2.0
Unsecured Debt | Senior Notes
Debt Instrument [Line Items]
Principal amount		$ 3.7
Weighted average interest rate (percent)		2.40%
Secured Debt | Notes Payable, Other Payables | Securitization notes payable
Debt Instrument [Line Items]
Principal amount		$ 5.2
Weighted average interest rate (percent)		1.74%

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

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