ACCUMULATED OTHER COMPREHENSIVE LOSS (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Changes in accumulated other comprehensive loss
Beginning balance	$ 3,809.7
Other comprehensive income (loss) before reclassifications	(63.2)	$ 5.9
Ending balance	9,662.3
Total
Changes in accumulated other comprehensive loss
Beginning balance	(57.3)	(8.7)
Ending balance	(120.5)	(2.8)
Foreign currency translation adjustments
Changes in accumulated other comprehensive loss
Beginning balance	(52.8)	(9.3)
Other comprehensive income (loss) before reclassifications	(62.8)	6.1
Ending balance	(115.6)	(3.2)
Unrealized gain (loss) on available-for- sales securities
Changes in accumulated other comprehensive loss
Beginning balance	(4.5)	0.6
Other comprehensive income (loss) before reclassifications	(0.4)	(0.2)
Ending balance	$ (4.9)	$ 0.4