v3.26.1
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning balance $ 2,216.3 $ 1,896.0
Ending balance 2,098.2 1,556.8
Translation adjustments:    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning balance (36.0) (35.5)
Reclassification of net loss (gain) (2.2) 0.7
Ending balance (38.2) (34.8)
Cash flow hedge | Foreign exchange derivatives    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning balance 9.0 (9.4)
Net gain (loss) before reclassifications (9.1) 2.6
Reclassification of net loss (gain) (6.1) 3.7
Ending balance (6.2) (3.1)
Cash flow hedge | Interest rate swap derivatives    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning balance (2.9) 1.4
Net gain (loss) before reclassifications 2.6 (1.6)
Reclassification of net loss (gain) (0.2) (0.5)
Ending balance (0.5) (0.7)
Employment benefit    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning balance 28.2 25.9
Net gain (loss) before reclassifications (0.1) (2.4)
Reclassification of net loss (gain) (1.0) (0.6)
Ending balance 27.1 22.9
Accumulated other comprehensive loss (AOCI), net of tax    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning balance [1] (1.7) (17.6)
Ending balance [1] $ (17.8) $ (15.7)
[1]
(a)    Accumulated other comprehensive income (loss) is net of tax (see note 9).