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Fair Value of Financial Instruments - Schedule of Reconciliation Level Three, Beneficial Interests in Securitizations (Details) - Variable Interest Entity, Not Primary Beneficiary - Level 3 - Fair Value, Measurements, Recurring - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Opening balance	$ 466	$ 421	$ 464	$ 366
Received in securitization transactions	71	86	173	228
Payments received	(55)	(45)	(159)	(137)
Change in fair value	4	1	8	15
Sales of beneficial interests	0	0	0	(9)
Ending balance	$ 486	$ 463	$ 486	$ 463

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Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Securitization Transactions

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- Definition

Amount of settlement of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482078/820-10-55-101

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Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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