CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Net loss	$ (365.5)	$ (543.6)	$ (627.5)	$ (749.6)
Other comprehensive (loss) income:
Foreign currency translation adjustment	71.6	(63.1)	66.2	(37.1)
Change in fair value of available for sale securities	0.0	0.4	0.0	1.3
Other comprehensive (loss) income	71.6	(62.7)	66.2	(35.8)
Comprehensive loss	$ (293.9)	$ (606.3)	$ (561.3)	$ (785.4)