v3.24.1.1.u2
ACCUMULATED OTHER COMPREHENSIVE (LOSS) (Details) - USD ($)
$ in Millions
 12 Months Ended
Mar. 31, 2024
Mar. 31, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning balance $ 9,042.5  
Other comprehensive income (loss) before reclassifications 8.2 $ (56.0)
Ending balance 5,667.9 9,042.5
Foreign currency translation adjustments    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning balance (111.7) (52.8)
Other comprehensive income (loss) before reclassifications 6.7 (58.9)
Ending balance (105.0) (111.7)
Unrealized gain (loss) on available- for-sales securities    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning balance (1.6) (4.5)
Other comprehensive income (loss) before reclassifications 1.5 2.9
Ending balance (0.1) (1.6)
Total    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning balance (113.3) (57.3)
Ending balance $ (105.1) $ (113.3)