Equity - Accumulated Other Comprehensive Income Rollforward (Details) - USD ($) $ in Thousands	3 Months Ended
	Aug. 31, 2023	Aug. 31, 2022
AOCI, Net of Tax
Beginning balance	$ 2,589,249	$ 2,141,969
Realized (gains) losses reclassified to earnings	(102)	(89)
Ending balance	2,747,927	2,246,935
Total
AOCI, Net of Tax
Beginning balance	8,343	2,258
Ending balance	8,241	2,169
Unrealized Gains on Derivative Hedges
AOCI, Net of Tax
Beginning balance	11,102	5,123
Realized (gains) losses reclassified to earnings	(155)	(189)
Ending balance	10,947	4,934
Unrealized Losses on Defined Benefit Plans
AOCI, Net of Tax
Beginning balance	(2,759)	(2,865)
Realized (gains) losses reclassified to earnings	53	100
Ending balance	$ (2,706)	$ (2,765)