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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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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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