v3.26.1
Accumulated Other Comprehensive Income (Loss) - Schedule of Changes in Accumulated Other Comprehensive Income (Loss) by Component (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
Accumulated Other Comprehensive Income            
Beginning balance $ 1,562.7 $ 1,543.9 $ 1,461.8 $ 1,428.6 $ 1,543.9 $ 1,428.6
Other comprehensive income (loss) before reclassifications (1.8)   10.0   0.5 22.9
Amounts reclassified from accumulated other comprehensive loss     0.4     1.0
Net current-period other comprehensive income (1.8) 2.3 10.4 13.5   23.9
Ending balance 1,587.4 1,562.7 1,496.1 1,461.8 1,587.4 1,496.1
Total            
Accumulated Other Comprehensive Income            
Beginning balance 24.2 21.9 (51.9) (65.4) 21.9 (65.4)
Net current-period other comprehensive income (1.8) 2.3 10.4 13.5    
Ending balance 22.4 24.2 (41.5) (51.9) 22.4 (41.5)
Unrealized Translation Adjustments            
Accumulated Other Comprehensive Income            
Beginning balance 23.6 21.3 7.5 (5.4) 21.3 (5.4)
Other comprehensive income (loss) before reclassifications (1.8)   10.0   0.5 22.9
Amounts reclassified from accumulated other comprehensive loss     0.0     0.0
Net current-period other comprehensive income     10.0     22.9
Ending balance 21.8 23.6 17.5 7.5 21.8 17.5
Pension Plans            
Accumulated Other Comprehensive Income            
Beginning balance 0.6 0.6 (59.4) (60.0) 0.6 (60.0)
Other comprehensive income (loss) before reclassifications 0.0   0.0   0.0 0.0
Amounts reclassified from accumulated other comprehensive loss     0.4     1.0
Net current-period other comprehensive income     0.4     1.0
Ending balance $ 0.6 $ 0.6 $ (59.0) $ (59.4) $ 0.6 $ (59.0)