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Other Investments - Additional Information (Details) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 USD ($) | Sep. 30, 2024 USD ($)
Net Investment Income [Line Items] |  |
Sale of investments | $ 0.1 | $ 0.3
RWT Horizons |  |
Net Investment Income [Line Items] |  |
Investments | 69.0 | 69.0
Oaktree Capital Management, L.P. |  |
Net Investment Income [Line Items] |  |
Investments | $ 6.0 | $ 6.0
Equity method investment, ownership percentage | 20.00% | 20.00%
CPP Investments |  |
Net Investment Income [Line Items] |  |
Investments | $ 16.0 | $ 16.0
Equity method investment, ownership percentage | 20.00% | 20.00%
Sale of investments | $ 1.0 | $ 1.0

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