Derivative Financial Instruments - Fair Value and Notional Amounts of Derivative Instruments (Details) - Not Designated as Hedging Instrument - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Fair value
Derivative assets at fair value	$ 0.0	$ 2.4
Derivative liabilities at fair value	(2.0)	(1.7)
Credit default swaps
Fair value
Derivative assets at fair value	0.0	2.4
Derivative liabilities at fair value	0.0	0.0
Notional amounts
Notional amounts	0.0	2.2
Forwards
Fair value
Derivative assets at fair value	0.0	0.0
Derivative liabilities at fair value	(2.0)	(1.7)
Notional amounts
Notional amounts	$ 158.1	$ 133.3

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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