Restructuring Charges, Net - Changes In Restructuring Liability (Detail) - USD ($) $ in Thousands	12 Months Ended
Apr. 30, 2021	Apr. 30, 2020
Restructuring And Related Activities [Abstract]
Restructuring Liability, Beginning balance	$ 34,153	$ 531
Restructuring charges, net	30,732	58,559
Reductions for cash payments	(56,387)	(16,737)
Non-cash payments	(3,968)	(8,053)
Exchange rate fluctuations	2,455	(147)
Restructuring Liability, Ending balance	$ 6,985	$ 34,153

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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Amount of decrease in the reserve for full or partial settlement through consideration other than cash.

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Amount of foreign currency translation gain (loss) which decreases (increases) the restructuring reserve.

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