CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Unaudited) - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Additional Paid-in Capital	Treasury Stock	Retained Earnings/(Accumulated Deficit)	Accumulated Other Comprehensive Loss
Beginning balance (in shares) at Mar. 31, 2023		192.6
Beginning balance (in shares) at Mar. 31, 2023				(23.7)
Beginning balance at Mar. 31, 2023	$ 9,042.5	$ 1.9	$ 9,010.2	$ (1,020.6)	$ 1,164.3	$ (113.3)
Increase (Decrease) in Stockholders' Equity
Net loss	(206.0)				(206.0)
Change in cumulative foreign currency translation adjustment	26.0					26.0
Net unrealized loss on available-for-sale securities, net of taxes	0.9					0.9
Stock-based compensation	99.4		99.4
Issuance of restricted stock, net of forfeitures and cancellations (in shares)		1.0
Net share settlement of restricted stock awards (in shares)		(0.3)
Net share settlement of restricted stock awards	(41.3)		(41.3)
Exercise of stock options	0.2		0.2
Employee share purchase plan settlement (in shares)		0.2
Employee share purchase plan settlement	18.5		18.5
Ending balance (in shares) at Jun. 30, 2023		193.5
Ending balance (in shares) at Jun. 30, 2023				(23.7)
Ending balance at Jun. 30, 2023	$ 8,940.2	$ 1.9	9,087.0	$ (1,020.6)	958.3	(86.4)
Beginning balance (in shares) at Mar. 31, 2024	170.8	194.5
Beginning balance (in shares) at Mar. 31, 2024	(23.7)			(23.7)
Beginning balance at Mar. 31, 2024	$ 5,667.9	$ 1.9	9,371.6	$ (1,020.6)	(2,579.9)	(105.1)
Increase (Decrease) in Stockholders' Equity
Net loss	(262.0)				(262.0)
Change in cumulative foreign currency translation adjustment	(5.4)					(5.4)
Net unrealized loss on available-for-sale securities, net of taxes	0.0
Stock-based compensation	97.2		97.2
Issuance of restricted stock, net of forfeitures and cancellations (in shares)		1.2
Exercise of stock options	0.3		0.3
Issuance of shares related to Zynga convertible notes (in shares)		0.1
Issuance of shares related to Zynga convertible notes	16.0		16.0
Issuance of shares related to Gearbox acquisition (in shares)		2.8
Issuance of shares related to Gearbox acquisition	454.3		454.3
Employee share purchase plan settlement (in shares)		0.2
Employee share purchase plan settlement	23.0		23.0
Other changes, net	$ 0.2	$ 0.1	0.1
Ending balance (in shares) at Jun. 30, 2024	175.2	198.8
Ending balance (in shares) at Jun. 30, 2024	(23.7)			(23.7)
Ending balance at Jun. 30, 2024	$ 5,991.5	$ 2.0	$ 9,962.5	$ (1,020.6)	$ (2,841.9)	$ (110.5)