Securitization and Variable Interest Entities (Details) - entity	9 Months Ended
Sep. 30, 2023	Dec. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of consolidated VIEs (in entities)	7	6
Number of consolidated VIEs established (in entities)	2
Number of consolidated VIEs exercised securitization clean up calls (in entities)	1
Number of nonconsolidated entities in which investments are held	21	23
Number of nonconsolidated VIEs exercised securitization clean up calls (in entities)	1
Number of consolidated entities which were previous nonconsolidated	1

Variable Interest Entity, Consolidated, Exercised Securitization Clean Up Calls, Number Of Entities

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Variable Interest Entity, Consolidated, Number of Entities

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Variable Interest Entity, Consolidated, Number Of Entities Established

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Variable Interest Entity, Consolidated Previously Nonconsolidated, Number Of Entities

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Variable Interest Entity, Nonconsolidated, Exercised Securitization Clean Up Calls, Number Of Entities

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Variable Interest Entity, Nonconsolidated, Investments Held, Number Of Entities

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