Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2021
Condensed Statement of Income Captions [Line Items]
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax	$ (50)	$ 21,944	$ (1,156)
Other Comprehensive Income (Loss), Tax	28,913	8,687	18,344
Pension Plan, Defined Benefit [Member]
Condensed Statement of Income Captions [Line Items]
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax	0	18,481	(1,156)
Cash Flow Hedging
Condensed Statement of Income Captions [Line Items]
Other Comprehensive Income (Loss), Tax	$ 50	$ 3,463	$ 0