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Debt (Summary of Debt) (Details) - USD ($) $ in Millions	3 Months Ended
Debt (Summary of Debt) (Details) - USD ($) $ in Millions	Mar. 31, 2023	Mar. 15, 2023	Dec. 31, 2022	Dec. 21, 2016
Debt [Line Items]
Short-term debt	$ 23.6		$ 29.1
Total long-term debt	3,220.4		581.5
Total debt	3,244.0		610.6
Current portion	95.7		4.4
Non-current portion	3,124.7		577.1
Term Loans
Debt [Line Items]
Less: unamortized debt issue costs	(20.5)		(0.4)
Delayed Draw Term Loan, In Canadian Dollars, Available until September 2026 [Member] \| Term Loans
Debt [Line Items]
Long-term Debt			$ 85.5
Weighted average interest rate			5.86%
Term Loan A Facility Loan 7.69% Maturing in September 2026 [Member] \| Term Loans
Debt [Line Items]
Long-term Debt	$ 84.8
Weighted average interest rate	7.69%
Term Loan A Facility Loan 7.54% Maturing in September 2026 [Member] \| Term Loans
Debt [Line Items]
Long-term Debt	$ 1,825.0
Weighted average interest rate	7.54%
5.375% Senior Unsecured Note, Due January 2025 [Member] \| Senior Unsecured Notes
Debt [Line Items]
Long-term Debt			$ 500.0
Less: unamortized debt issue costs			$ (3.6)
Interest rate			5.375%	5.375%
Maturity date	Jan. 15, 2025
6.75% Senior Secured Note, Due March 2028 [Member] \| Senior Secured Notes
Debt [Line Items]
Long-term Debt	$ 550.0
Less: unamortized debt issue costs	$ (7.7)
Interest rate	6.75%	6.75%
7.75% Senior Unsecured Note, Due March 2031 [Member] \| Senior Unsecured Notes
Debt [Line Items]
Long-term Debt	$ 800.0
Less: unamortized debt issue costs	$ (11.2)
Interest rate	7.75%	7.75%