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STOCKHOLDERS' EQUITY - Components of Accumulated Other Comprehensive Income, Net of Tax (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance $ 17,207.7 $ 14,046.4 $ 16,529.6 $ 13,397.3
Other comprehensive income (loss) 30.4 (15.0) 54.7 (11.9)
Ending balance 17,953.1 14,796.5 17,953.1 14,796.5
Total        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance (27.1) (8.7) (51.3) (12.2)
Other comprehensive income (loss) before reclassifications 33.1 (18.6) 51.6 (16.6)
Amounts reclassified from accumulated other comprehensive income (loss) (3.0) 3.8 2.7 5.3
Other comprehensive income (loss) 30.1 (14.8) 54.3 (11.3)
Ending balance 3.0 (23.5) 3.0 (23.5)
Gains (Losses) on Hedge Instruments        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance 0.6 3.1 11.0 (2.5)
Other comprehensive income (loss) before reclassifications (11.8) 1.1 (27.8) 5.2
Amounts reclassified from accumulated other comprehensive income (loss) (3.5) 3.7 2.1 5.2
Other comprehensive income (loss) (15.3) 4.8 (25.7) 10.4
Ending balance (14.7) 7.9 (14.7) 7.9
Unrealized Gains on Available-for-Sale Securities        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance 14.5 (33.9) (14.6) (29.7)
Other comprehensive income (loss) before reclassifications 7.1 5.4 36.2 1.1
Amounts reclassified from accumulated other comprehensive income (loss) 0.3 0.1 0.3 0.2
Other comprehensive income (loss) 7.4 5.5 36.5 1.3
Ending balance 21.9 (28.4) 21.9 (28.4)
Foreign Currency Translation Gains (Losses)        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance (27.7) 21.6 (33.1) 19.4
Other comprehensive income (loss) before reclassifications 37.8 (25.1) 43.2 (22.9)
Amounts reclassified from accumulated other comprehensive income (loss) 0.0 0.0 0.0 0.0
Other comprehensive income (loss) 37.8 (25.1) 43.2 (22.9)
Ending balance 10.1 (3.5) 10.1 (3.5)
Employee Benefit Plans        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance (14.5) 0.5 (14.6) 0.6
Other comprehensive income (loss) before reclassifications 0.0 0.0 0.0 0.0
Amounts reclassified from accumulated other comprehensive income (loss) 0.2 0.0 0.3 (0.1)
Other comprehensive income (loss) 0.2 0.0 0.3 (0.1)
Ending balance $ (14.3) $ 0.5 $ (14.3) $ 0.5