v3.26.1
ACCUMULATED OTHER COMPREHENSIVE INCOME, NET (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
AOCI Rollforward          
Beginning balance $ 5,373.5 $ 5,138.3 $ 4,452.1 $ 4,279.6 $ 5,138.3
Other comprehensive loss (6.4) (19.0) 67.2 23.6 (25.4)
Ending balance 5,625.8 5,373.5 4,665.1 4,452.1 5,625.8
Accumulated Other Comprehensive Income, Net          
AOCI Rollforward          
Beginning balance 11.1 30.1 (24.8) (48.4) 30.1
Other comprehensive loss (6.4) (19.0) 67.2 23.6  
Ending balance 4.7 11.1 $ 42.4 $ (24.8) 4.7
Foreign Currency Translation Adjustment          
AOCI Rollforward          
Beginning balance   29.7     29.7
Other comprehensive loss         (25.4)
Ending balance 4.3       4.3
Post-Retirement Benefits, Net          
AOCI Rollforward          
Beginning balance   $ 0.4     0.4
Other comprehensive loss         0.0
Ending balance $ 0.4       $ 0.4