v3.25.4
Accumulated Other Comprehensive Earnings or Loss - Changes in Components of Accumulated Other Comprehensive Earnings (Loss) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning balance $ 1,593.6 $ 2,309.7 $ 2,556.7
Other comprehensive earnings (loss) 31.2 44.1 (47.7)
Ending balance 1,063.5 1,593.6 2,309.7
Total accumulated other comprehensive loss      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning balance (163.8) (207.9) (160.2)
Ending balance (132.6) (163.8) (207.9)
Accumulated other comprehensive loss      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning balance (154.2) (198.0) (149.2)
Other comprehensive earnings (loss) 29.6 43.8 (48.8)
Ending balance (124.6) (154.2) (198.0)
Foreign currency translation adjustments      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning balance (33.2) (58.8) (83.7)
Other comprehensive earnings (loss) 33.2 25.6 24.9
Ending balance 0.0 (33.2) (58.8)
Pension- related adjustments and other      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning balance (121.0) (139.2) (65.5)
Other comprehensive earnings (loss) (3.6) 18.2 (73.7)
Ending balance (124.6) (121.0) (139.2)
Non-controlling interests      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning balance (9.6) (9.9) (11.0)
Other comprehensive earnings (loss) 1.6 0.3 1.1
Ending balance $ (8.0) $ (9.6) $ (9.9)