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Investments - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Schedule of Investments [Abstract] |  |  |  |
Realized gains (losses) on trading securities | $ 0.5 | $ (0.1) | $ 1.2 | $ 2.1

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