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Fair Value of Financial Instruments - Other Assets Measured at Fair Value on a Nonrecurring Basis (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025 USD ($) property	Sep. 30, 2024 USD ($) property	Sep. 30, 2025 USD ($) property	Sep. 30, 2024 USD ($) property
Carrying value and estimated fair value of financial instruments
Other real estate, fair value	$ 85.1	$ 82.1	$ 85.1	$ 82.1
Number of real estate owned properties held for investment reclassified to held for sale | property			3
Other real estate, held for sale, fair value	10.4		$ 10.4
Equity method investments	$ 20.2		$ 20.2
Commercial REO
Carrying value and estimated fair value of financial instruments
Number of real estate owned properties held for investment reclassified to held for sale | property			2
Number of real estate owned properties | property	0		0
Number of properties recorded at fair value | property		2		2
Other real estate, valuation adjustments	$ (1.5)		$ (1.5)	$ (0.7)
Commercial REO One
Carrying value and estimated fair value of financial instruments
Other real estate, fair value		$ 28.4		$ 28.4
Commercial REO One | Entity Owning a Newly Constructed Industrial Property
Carrying value and estimated fair value of financial instruments
Ownership percentage		75.00%		75.00%
Equity method investments		$ 10.3		$ 10.3
Commercial REO Two
Carrying value and estimated fair value of financial instruments
Other real estate, fair value		$ 40.0		$ 40.0
Commercial REO Two | Entity Owning a Newly Constructed Industrial Property
Carrying value and estimated fair value of financial instruments
Ownership percentage		49.00%		49.00%
Equity method investments		$ 4.9		$ 4.9

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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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