v3.26.3
Fair Value Measurements - Debt and Finance Lease Obligations (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Sep. 30, 2024
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]      
Finance lease obligations $ 97.8 $ 98.8  
Total debt including finance lease obligations 1,147.8 1,211.6  
Level 2 | Estimate of Fair Value Measurement      
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]      
Debt instrument, fair value 523.4 735.7  
Finance lease obligations 80.7 81.4  
Interest rate swap contracts      
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]      
Floating-to-fixed interest rate swap 200.0 200.0 $ 200.0
Interest rate swap contracts | Senior Notes Issued 2018      
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]      
Senior notes   200.0  
Variable interest rate debt      
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]      
Debt 500.0 362.8  
Fixed rate debt      
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]      
Debt $ 550.0 $ 750.0