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INVESTMENTS - Variable Interest Entities (Details) - Variable interest entity, not primary beneficiary - USD ($) $ in Millions | Sep. 30, 2024 | Dec. 31, 2023
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Variable Interest Entity [Line Items] |  |
Investment carrying values | $ 886.1 | $ 919.3
Unfunded capital commitments | 117.3 | 94.1
Accounts receivable | 85.2 | 92.1
Maximum risk of loss related to nonconsolidated variable interest entities | $ 1,088.6 | $ 1,105.5

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