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Debt (Narrative) (Details) - USD ($)	Sep. 30, 2025	Apr. 03, 2025	Apr. 02, 2025	Dec. 31, 2024	Mar. 15, 2023
Debt [Line Items]
Unamortized deferred debt issue costs	$ 17,200,000			$ 21,300,000
Delayed Draw Term Loans
Debt [Line Items]
Unamortized deferred debt issue costs		$ 3,900,000
Delayed Draw Term Loans \| Other non-current assets
Debt [Line Items]
Unamortized deferred debt issue costs		2,600,000
Secured Debt \| Senior Secured Notes
Debt [Line Items]
Aggregate principal amount					$ 550,000,000.0
Interest rate	6.75%				6.75%
Unsecured Debt \| Senior Unsecured Notes
Debt [Line Items]
Aggregate principal amount					$ 800,000,000.0
Interest rate	7.75%				7.75%
Revolving Credit Facility \| Revolving credit facilities, Maturing September 2026
Debt [Line Items]
Maximum borrowing capacity	$ 985,000,000.0
Revolving Credit Facility \| Revolving credit facilities, No Maturity
Debt [Line Items]
Available borrowing capacity	$ 15,000,000.0
Revolving Credit Facility \| Delayed Draw Term Loans
Debt [Line Items]
Aggregate principal amount		1,300,000,000	$ 750,000,000.0
Term Loan A Facility Loan 7.54% Maturing in April 2030 \| Delayed Draw Term Loans
Debt [Line Items]
Aggregate principal amount		950,000,000.0	$ 1,225,000,000
Unamortized deferred debt issue costs		$ 1,800,000
USD TLA Facility \| Term Loans
Debt [Line Items]
Quarterly instalments as percentage of principal amount outstanding (as percentage)	1.25%