Derivative Contracts - Fair Value of Derivative Instruments (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Not Designated as Hedging Instrument \| Foreign exchange contracts
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	$ 1,404.0	$ 1,586.9
Cash collateral	0.0	0.8
Not Designated as Hedging Instrument \| Derivative assets \| Foreign exchange contracts
Derivatives, Fair Value [Line Items]
Fair Value	4.5	17.0
Derivative, Notional Amount	529.5	550.0
Not Designated as Hedging Instrument \| Derivative liabilities \| Foreign exchange contracts
Derivatives, Fair Value [Line Items]
Fair Value	(12.1)	(41.7)
Derivative, Notional Amount	874.5	1,036.9
Not Designated as Hedging Instrument \| Derivative liabilities \| Embedded Derivative Financial Instruments
Derivatives, Fair Value [Line Items]
Fair Value	0.0	(3.6)
Derivative, Notional Amount	0.0	0.0
Designated as Hedging Instrument \| Foreign exchange contracts
Derivatives, Fair Value [Line Items]
Cash collateral	0.0	2.0
Designated as Hedging Instrument \| Derivative assets \| Foreign exchange contracts
Derivatives, Fair Value [Line Items]
Fair Value	0.5	0.0
Derivative, Notional Amount	186.8	0.0
Designated as Hedging Instrument \| Derivative liabilities \| Foreign exchange contracts
Derivatives, Fair Value [Line Items]
Fair Value	0.0	(4.2)
Derivative, Notional Amount	$ 0.0	$ 158.0

The aggregate fair value of assets that are already posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features.

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Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments.

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Nominal or face amount used to calculate payment on derivative.

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