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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

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