Fair Value Measurements - Carrying Amounts and Fair Values of Financial Instruments, Other than Cash and Cash Equivalents, Receivables and Accounts Payable (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Oct. 31, 2023	Apr. 30, 2023	Oct. 31, 2023	Oct. 31, 2022
Schedule Of Carrying Amounts And Fair Values Of Financial Instruments [Abstract]
Long-term debt (including current portion), Carrying Amount	$ 1,732,037		$ 1,732,037	$ 737,857
Long-term debt (including current portion), Fair Value	1,699,187		1,699,187	$ 714,286
Other Comprehensive Income (Loss), Net Investment Hedge, Net of Tax	$ 7,846	$ (2,467)
Net Investment Hedge Gain (Loss)			$ 15,544