Common Stock and Stock Plans - Summary of Restricted Stock Unit Activity (Detail) - Restricted Stock Units [Member] - $ / shares	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Restricted Stock Units, Outstanding, Beginning Balance	4,465,147
Number of Restricted Stock Units, Awarded	1,451,667
Number of Restricted Stock Units, Forfeited	(352,651)
Number of Restricted Stock Units, Vested	(1,543,429)
Number of Restricted Stock Units, Outstanding, Ending Balance	4,020,734	4,465,147
Number of Restricted Stock Units, Vested and deferred, Ending Balance	207,785
Weighted Average Grant Date Fair Value per Share, Outstanding, Beginning Balance	$ 43
Weighted Average Grant Date Fair Value per Share, Awarded	29.21	$ 35.04	$ 52.85
Weighted Average Grant Date Fair Value per Share, Forfeited	40.89
Weighted Average Grant Date Fair Value per Share, Vested	45.86
Weighted Average Grant Date Fair Value per Share, Outstanding, Ending Balance	37.11	$ 43
Weighted Average Grant Date Fair Value per Share, Vested and deferred, Ending Balance	$ 51.71