Accumulated Other Comprehensive (loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Aug. 31, 2024	Aug. 31, 2023
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ 2,512,225	$ 2,143,000
Ending Balance	2,651,527	2,282,836
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(461,847)	(465,375)
Current period comprehensive (loss) income	(1,279)	9,790
Income taxes associated with current period comprehensive (loss) income	(422)	(951)
Income taxes reclassified into earnings	(2,090)
Ending Balance	(465,638)	(456,536)
Pension And Other Postretirement Benefit Liability Adjustments, Net of Tax
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(84,647)	(148,764)
Current period comprehensive (loss) income	(1,521)
Amounts reclassified from accumulated other comprehensive income (loss)	1,766	4,122
Income taxes reclassified into earnings	(387)	(958)
Ending Balance	(84,789)	(145,600)
Unrealized Gain (Loss) On Derivatives, Net of Tax
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	11,405	11,405
Ending Balance	11,405	11,405
Unrealized Gain (Loss) On Securities, Net of Tax
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(2,201)	(2,201)
Current period comprehensive (loss) income	684	(87)
Income taxes associated with current period comprehensive (loss) income	(43)	(45)
Amounts reclassified from accumulated other comprehensive income (loss)	(9)	(130)
Income taxes reclassified into earnings	1	5
Ending Balance	(1,568)	(2,458)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(537,290)	(604,935)
Current period comprehensive (loss) income	(2,116)	9,703
Income taxes associated with current period comprehensive (loss) income	(465)	(996)
Amounts reclassified from accumulated other comprehensive income (loss)	1,757	3,992
Income taxes reclassified into earnings	(2,476)	(953)
Ending Balance	$ (540,590)	$ (593,189)