Derivatives and Fair Value Measurements - Long-term debt (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net carrying amount	$ 334.5	$ 333.8
Carrying amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total debt at par value	343.5	343.6
Less: Unamortized debt issuance costs		(9.8)
Net carrying amount	334.5	333.8
Estimated fair value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated fair value	$ 454.8	$ 560.0

Amount of short-term and long-term debt and lease obligation.

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Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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Amount of long-term debt and lease obligation, including portion classified as current.

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