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ACCUMULATED OTHER COMPREHENSIVE LOSS - Schedule of Activity for Each Component of Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
AOCI Attributable to Parent, Net of Tax      
Beginning balance $ 6,650.0    
Ending balance 9,998.4 $ 6,650.0  
Total Accumulated Other Comprehensive Loss      
AOCI Attributable to Parent, Net of Tax      
Beginning balance (242.8) (254.9) $ (157.7)
Other comprehensive (loss) income before reclassifications 75.7 71.7 (19.3)
Amounts reclassified from accumulated other comprehensive loss (59.5) (72.4) (72.8)
Deferred income tax (expense) benefit (17.9) 12.8 (5.1)
Ending balance (244.5) (242.8) (254.9)
Foreign Currency Translation Adjustments      
AOCI Attributable to Parent, Net of Tax      
Beginning balance (214.5) (218.8) (172.5)
Other comprehensive (loss) income before reclassifications (49.9) 6.9 (33.9)
Amounts reclassified from accumulated other comprehensive loss (7.0) (6.9) (7.0)
Deferred income tax (expense) benefit (2.7) 4.3 (5.4)
Ending balance (274.1) (214.5) (218.8)
Unrealized Gain (Loss) on Hedges      
AOCI Attributable to Parent, Net of Tax      
Beginning balance 0.7 23.8 29.7
Other comprehensive (loss) income before reclassifications 91.0 43.3 75.2
Amounts reclassified from accumulated other comprehensive loss (40.6) (72.8) (84.5)
Deferred income tax (expense) benefit (13.4) 6.4 3.4
Ending balance 37.7 0.7 23.8
Unrealized (Loss) Gain on Available-for-sale Investments      
AOCI Attributable to Parent, Net of Tax      
Beginning balance (24.8) (65.6) (6.9)
Other comprehensive (loss) income before reclassifications 34.8 32.6 (77.9)
Amounts reclassified from accumulated other comprehensive loss (12.5) 8.1 18.8
Deferred income tax (expense) benefit (1.5) 0.1 0.4
Ending balance (4.0) (24.8) (65.6)
Unrealized Pension (Costs) Credits      
AOCI Attributable to Parent, Net of Tax      
Beginning balance (4.2) 5.7 (8.0)
Other comprehensive (loss) income before reclassifications (0.2) (11.1) 17.3
Amounts reclassified from accumulated other comprehensive loss 0.6 (0.8) (0.1)
Deferred income tax (expense) benefit (0.3) 2.0 (3.5)
Ending balance $ (4.1) $ (4.2) $ 5.7