v3.26.1
Debt and Credit Facility - Summary of Interest Expense Relating to Senior Notes and Revolving Credit Facility (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Debt Instrument [Line Items]    
Total interest expense $ 14.4 $ 11.2
Senior Notes and Revolving Credit Facility    
Debt Instrument [Line Items]    
Interest expense on finance lease liabilities 0.2 0.2
Interest expense capitalized as construction in progress (0.4) (2.0)
Total interest expense 14.4 11.2
Revolving Credit Facility    
Debt Instrument [Line Items]    
Revolving Credit Facility interest expense, including commitment fees and finance cost amortization 0.6 0.6
Senior Notes    
Debt Instrument [Line Items]    
Senior Notes interest expense, including debt issuance cost amortization $ 14.0 $ 12.4