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Fair Value Measurements - Fair Value Option on Consolidated VIEs (Details) - Other loans of consolidated VIEs - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022
Fair Value Option, Quantitative Disclosures |  |
Fair value | $ 103.3 |
Aggregate contractual principal | 103.3 |
Change in fair value pre-tax loss | (0.1) | $ (0.1)
Interest income | $ 1.3 | $ 1.3

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