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Fair Value Measurements - Recurring basis (Details) $ in Millions	3 Months Ended
	Mar. 31, 2025 agreement	Mar. 31, 2024 agreement	Jun. 30, 2025 USD ($)	Dec. 31, 2024 USD ($)
First Out Term Loan
Financial Liabilities
Long-term debt, net			$ 319.8	$ 324.6
Second Out Term Loan
Financial Liabilities
Long-term debt, net			506.9	540.1
Interest rate swaps \| Not designated as a hedge
Fair value
Number of interest rate swap agreements entered into \| agreement	5	5
Recurring
Financial Liabilities
Financial Liabilities Total			833.0	867.6
Recurring \| Interest rate swaps
Financial Liabilities
Derivative liability			6.3	2.9
Recurring \| Long-term debt
Financial Liabilities
Long-term debt, net			826.7	864.7
Recurring \| Level 2
Financial Liabilities
Financial Liabilities Total			833.0	867.6
Recurring \| Level 2 \| Interest rate swaps
Financial Liabilities
Derivative liability			6.3	2.9
Recurring \| Level 2 \| Long-term debt
Financial Liabilities
Long-term debt, net			$ 826.7	$ 864.7