v3.26.1
CREDIT FACILITIES - Schedule of Long-Term Debt Instruments (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Line of Credit Facility [Line Items]    
Finance lease obligations (see note 6) $ 58.0 $ 58.0
Total Credit Facility and finance lease obligations: 772.4 776.5
Current portion 25.9 26.0
Long-term portion 746.5 750.5
Line of Credit    
Line of Credit Facility [Line Items]    
Total borrowings under Credit Facility 719.3 723.7
Line of Credit | Letter of Credit, Guarantees, Surety Bonds, and Overdraft Facilities    
Line of Credit Facility [Line Items]    
Long-term debt 51.4 48.9
Revolving Facility | Line of Credit    
Line of Credit Facility [Line Items]    
Total borrowings under Credit Facility 0.0 0.0
Revolving Facility | Line of Credit | Interest rate swap derivatives    
Line of Credit Facility [Line Items]    
Notional amounts under interest rate swaps (note 14) 0.0 0.0
Secured Debt | Line of Credit    
Line of Credit Facility [Line Items]    
Total borrowings under Credit Facility 719.3 723.7
Unamortized debt issuance costs related to the Term Loans (4.9) (5.2)
Secured Debt | Line of Credit | Term A Loan    
Line of Credit Facility [Line Items]    
Total borrowings under Credit Facility 228.1 231.2
Secured Debt | Line of Credit | Term B Loan    
Line of Credit Facility [Line Items]    
Total borrowings under Credit Facility 491.2 492.5
Secured Debt | Line of Credit | Interest rate swap derivatives    
Line of Credit Facility [Line Items]    
Notional amounts under interest rate swaps (note 14) 350.0 350.0
Secured Debt | Line of Credit | Interest rate swap derivatives | Term A Loan    
Line of Credit Facility [Line Items]    
Notional amounts under interest rate swaps (note 14) 120.0 120.0
Secured Debt | Line of Credit | Interest rate swap derivatives | Term B Loan    
Line of Credit Facility [Line Items]    
Notional amounts under interest rate swaps (note 14) 230.0 230.0
Letter of Credit | Line of Credit | Letter of Credit, Guarantees, Surety Bonds, and Overdraft Facilities    
Line of Credit Facility [Line Items]    
Long-term debt 10.4 10.8
Bank Guarantees and Surety Bonds | Line of Credit | Letter of Credit, Guarantees, Surety Bonds, and Overdraft Facilities    
Line of Credit Facility [Line Items]    
Long-term debt 41.0 38.1
Bank Overdraft Facility | Line of Credit    
Line of Credit Facility [Line Items]    
Long-term debt 0.0 0.0
Available uncommitted bank overdraft facilities $ 198.5 $ 198.5