CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Statement of Comprehensive Income [Abstract]
Net loss	$ (91.6)	$ (153.4)	$ (841.2)	$ (514.4)
Other comprehensive income (loss)
Foreign currency translation adjustment	66.3	100.7	29.2	(78.4)
Change in fair value of available for sale securities	0.1	1.4	1.4	1.5
Other comprehensive income (loss)	66.4	102.1	30.6	(76.9)
Comprehensive income (loss)	$ (25.2)	$ (51.3)	$ (810.6)	$ (591.3)