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Fair Value Measurements - Schedule of Significant Unobservable Inputs Used in the Fair Value Measurement of Senior Asset-Backed Securities (Details) - Senior asset-backed securities related to Structured Program transactions - Discount rate	Jun. 30, 2026	Dec. 31, 2025
Minimum
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, debt securities available-for-sale	0.053	0.050
Maximum
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, debt securities available-for-sale	0.068	0.054
Weighted Average
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, debt securities available-for-sale	0.056	0.052

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- Definition

Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]

+ References

No definition available.

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- Definition

Value of input used to measure investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 103
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482078/820-10-55-103

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

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