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Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Feb. 28, 2022 | Feb. 28, 2021 | Feb. 28, 2022 | Feb. 28, 2021
Statement of Comprehensive Income [Abstract] |  |  |  |
Foreign currency translation adjustments, Tax | $ 296 | $ 273 | $ 3,562 | $ 3,216
Pension and other postretirement benefit liability adjustments, Tax | 951 | 1,356 | 3,630 | 3,864
Unrealized (loss) on securities and other, Tax | 238 | 330 | 473 | 8
Unrealized gain (loss) on derivatives, Tax | $ 838 | $ 763 | $ 6,551 | $ 6,425

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