Income Taxes - Summary of (Provision for) Benefit from Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2023
Current tax (provision) benefit:
Federal	$ (28,247)	$ (12,128)	$ (11,494)
State	(2,661)	(1,010)	(5,231)
Foreign	(117,042)	(27,028)	(5,965)
Total current tax provision	(147,950)	(40,166)	(22,690)
Deferred tax (provision) benefit:
Federal	16,770	74,404	40,889
State	(102)	5,166	(80,715)
Foreign	132,223	100,070	13,098
Total deferred tax benefit (provision)	148,891	179,640	(26,728)
Total (provision for) benefit from income taxes	$ 941	$ 139,474	$ (49,418)