Common Stock and Stock Plans - Summary of Restricted Stock Unit Activity (Detail) - RSU [Member] - $ / shares	12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Outstanding, Beginning Balance	4,020,734
Number of Shares, Awarded	3,704,379
Number of Shares, Forfeited	(391,204)
Number of Shares, Vested	(1,575,356)
Number of Shares, Outstanding Ending Balance	5,758,553	4,020,734
Number of Stock Units, Vested and deferred, Ending Balance	206,332
Weighted Average Grant Date Fair Value per Share, Outstanding, Beginning Balance	$ 37.11
Weighted Average Grant Date Fair Value per Share, Awarded	15.77	$ 29.21	$ 35.04
Weighted Average Grant Date Fair Value per Share, Forfeited	25.09
Weighted Average Grant Date Fair Value per Share, Vested	37.67
Weighted Average Grant Date Fair Value per Share, Outstanding, Ending Balance	24.05	$ 37.11
Weighted Average Grant Date Fair Value per Share, Vested and deferred, Ending Balance	$ 50.44