Fair Value - Schedule of Fair Value and Carrying Value of Company Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Fair Value
Assets:
Finance receivables, net	$ 7,342,319	$ 7,500,263
Liabilities:
Deposits, net	555,902	460,766
Fair Value \| Medium-Term Note
Debt:
Long-term debt, fair value	3,127,710	3,308,952
Fair Value \| Senior Notes
Debt:
Long-term debt, fair value	683,624	674,787
Fair Value \| Asset-backed U.S. commercial paper conduit facility \| Secured Debt
Debt:
Long-term debt, fair value	431,846	233,258
Fair Value \| Asset-backed Canadian commercial paper conduit facility \| Secured Debt
Debt:
Long-term debt, fair value	77,381	70,742
Fair Value \| Asset-backed securitization debt \| Secured Debt
Debt:
Long-term debt, fair value	1,955,006	1,872,215
Fair Value \| Unsecured commercial paper
Debt:
Short-term debt, fair value	640,204	878,935
Carrying Value
Assets:
Finance receivables, net	7,288,294	7,498,265
Liabilities:
Deposits, net	550,586	447,782
Carrying Value \| Medium-Term Note
Debt:
Long-term debt, fair value	3,114,013	3,319,138
Carrying Value \| Senior Notes
Debt:
Long-term debt, fair value	746,800	746,079
Carrying Value \| Asset-backed U.S. commercial paper conduit facility \| Secured Debt
Debt:
Long-term debt, fair value	431,846	233,258
Carrying Value \| Asset-backed Canadian commercial paper conduit facility \| Secured Debt
Debt:
Long-term debt, fair value	77,381	70,742
Carrying Value \| Asset-backed securitization debt \| Secured Debt
Debt:
Long-term debt, fair value	1,950,138	1,877,368
Carrying Value \| Unsecured commercial paper
Debt:
Short-term debt, fair value	$ 640,204	$ 878,935

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- Definition

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

+ References

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- Definition

Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits.

+ References

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Fair value portion of an agreement for an unconditional promise by the maker to pay the holder a definite sum of money at a future date.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity 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. This item represents the amount of short-term debt existing as of the balance sheet date.

+ References

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