Condensed Consolidated Statements of Comprehensive Income (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 31, 2023	Jan. 31, 2022	Jan. 31, 2023	Jan. 31, 2022
Change In Pension Benefits And Derivative Hedging Activities [Line Items]
Other comprehensive income, deferred tax		$ 18,230		$ 18,481
Cash Flow Hedging
Change In Pension Benefits And Derivative Hedging Activities [Line Items]
Other comprehensive income, deferred tax	$ (890)	$ 763	$ 461	$ 1,404