Common Stock and Stock Plans - Summary of Restricted Stock Unit Activity (Detail) - RSU [Member] - $ / shares	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Outstanding, Beginning Balance	5,758,553
Number of Shares, Awarded	5,378,977
Number of Shares, Forfeited	(631,443)
Number of Shares, Vested	(2,314,111)
Number of Shares, Outstanding Ending Balance	8,191,976	5,758,553
Number of Stock Units, Vested and deferred, Ending Balance	219,687
Weighted Average Grant Date Fair Value per Share, Outstanding, Beginning Balance	$ 24.05
Weighted Average Grant Date Fair Value per Share, Awarded	27.49	$ 15.77	$ 29.21
Weighted Average Grant Date Fair Value per Share, Forfeited	22.15
Weighted Average Grant Date Fair Value per Share, Vested	26.6
Weighted Average Grant Date Fair Value per Share, Outstanding, Ending Balance	25.73	$ 24.05
Weighted Average Grant Date Fair Value per Share, Vested and deferred, Ending Balance	$ 50.13