CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Unaudited) - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Additional Paid-in Capital	Treasury Stock	Retained Earnings	Accumulated Other Comprehensive(Loss) Income	Non-controlling interest
Beginning balance (in shares) at Mar. 31, 2021		137.6
Beginning balance (in shares) at Mar. 31, 2021				(22.4)
Beginning balance at Mar. 31, 2021	$ 3,331.9	$ 1.4	$ 2,288.8	$ (820.6)	$ 1,871.0	$ (8.7)	$ 0.0
Increase (Decrease) in Stockholders' Equity
Net (loss) income	152.3				152.3
Change in cumulative foreign currency translation adjustment	6.1					6.1
Net unrealized gain on available-for-sale securities, net of taxes	(0.2)					(0.2)
Stock-based compensation	73.8		73.8
Issuance of restricted stock, net of forfeitures and cancellations (in shares)		0.9
Net share settlement of restricted stock awards (in shares)		(0.3)
Net share settlement of restricted stock awards	(48.2)		(48.2)
Employee share purchase plan settlement (in shares)		0.1
Employee share purchase plan settlement	9.2		9.2
Issuance of shares related to Nordeus acquisition (in shares)		0.5
Issuance of shares related to Nordeus acquisition	94.2		94.1
Call option related to Nordeus Acquisition	12.4						12.4
Ending balance (in shares) at Jun. 30, 2021		138.8
Ending balance (in shares) at Jun. 30, 2021				(22.4)
Ending balance at Jun. 30, 2021	$ 3,631.5	$ 1.4	2,417.7	$ (820.6)	2,023.3	(2.8)	$ 12.4
Beginning balance (in shares) at Mar. 31, 2022	115.4	139.0
Beginning balance (in shares) at Mar. 31, 2022				(23.7)
Beginning balance at Mar. 31, 2022	$ 3,809.7	$ 1.4	2,597.2	$ (1,020.6)	2,289.0	(57.3)
Increase (Decrease) in Stockholders' Equity
Net (loss) income	(104.0)				(104.0)
Change in cumulative foreign currency translation adjustment	(62.8)					(62.8)
Net unrealized gain on available-for-sale securities, net of taxes	(0.4)					(0.4)
Stock-based compensation	61.3		61.3
Issuance of restricted stock, net of forfeitures and cancellations (in shares)		1.2
Net share settlement of restricted stock awards (in shares)		(0.4)
Net share settlement of restricted stock awards	(53.9)		(53.9)
Employee share purchase plan settlement (in shares)		0.1
Employee share purchase plan settlement	11.4		11.4
Issuance of shares related to Nordeus acquisition (in shares)		46.3
Issuance of shares related to Nordeus acquisition	5,377.7	$ 0.5	5,377.2
Stock-based compensation assumed in Zynga Acquisition	143.6		143.6
Issuance of shares for conversion of Convertible Notes (in shares)		3.7
Issuance of shares for conversion of Convertible Notes	$ 479.7		479.7
Ending balance (in shares) at Jun. 30, 2022	166.2	189.9
Ending balance (in shares) at Jun. 30, 2022				(23.7)
Ending balance at Jun. 30, 2022	$ 9,662.3	$ 1.9	$ 8,616.5	$ (1,020.6)	$ 2,185.0	$ (120.5)