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ACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME, NET (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2024
Mar. 31, 2024
Jun. 30, 2025
AOCI Rollforward          
Beginning balance $ 4,452.1 $ 4,279.6 $ 4,024.1 $ 3,985.0 $ 4,279.6
Other comprehensive income 67.2 23.6 (3.2) (13.8) 90.8
Ending balance 4,665.1 4,452.1 4,021.7 4,024.1 4,665.1
Accumulated other comprehensive (loss) income, net          
AOCI Rollforward          
Beginning balance (24.8) (48.4) (23.2) (9.4) (48.4)
Other comprehensive income 67.2 23.6 (3.2) (13.8)  
Ending balance 42.4 (24.8) $ (26.4) $ (23.2) 42.4
Foreign Currency Translation Adjustment          
AOCI Rollforward          
Beginning balance   (48.6)     (48.6)
Other comprehensive income         90.8
Ending balance 42.2       42.2
Post-Retirement Benefits, Net          
AOCI Rollforward          
Beginning balance   $ 0.2     0.2
Other comprehensive income         0.0
Ending balance $ 0.2       $ 0.2