Debt (Summary of Debt) (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024	Mar. 15, 2023
Debt [Line Items]
Weighted average interest rate	6.48%
Short-term debt	$ 62.8	$ 27.7
Total long-term debt	2,626.7	2,626.2
Less: current portion of long-term debt	4.1	4.1
Long-term debt	2,622.6	2,622.1
Term Loans
Debt [Line Items]
Less: unamortized debt issuance costs	$ (6.0)	(7.0)
CAD TLA Facility \| Term Loans
Debt [Line Items]
Weighted average interest rate	5.27%
Long-term debt:	$ 71.2	72.5
USD TLA Facility \| Term Loans
Debt [Line Items]
Weighted average interest rate	6.64%
Long-term debt:	$ 1,225.0	1,225.0
Senior secured notes due in March 2028 \| Secured Debt
Debt [Line Items]
Interest rate	6.75%		6.75%
Long-term debt:	$ 550.0	550.0
Less: unamortized debt issuance costs	$ (4.8)	(5.2)
Senior unsecured notes due in March 2031 \| Unsecured Debt
Debt [Line Items]
Interest rate	7.75%		7.75%
Long-term debt:	$ 800.0	800.0
Less: unamortized debt issuance costs	$ (8.7)	$ (9.1)

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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