Equity - Summary of activity in accumulated other comprehensive income account by component (Details) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2022	May 31, 2021
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ 1,399,879	$ 648,822
Changes in unrealized gains (losses)	2,619	1,545
Realized (gains) losses reclassified into earnings	(336)	340
Ending balance	2,141,969	1,399,879
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(25)	(1,910)
Ending balance	2,258	(25)
Unrealized Gains on Derivative Hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	1,718	2,130
Changes in unrealized gains (losses)	4,028	0
Realized (gains) losses reclassified into earnings	(623)	(412)
Ending balance	5,123	1,718
Unrealized Losses on Defined Benefit Plans
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(1,743)	(4,040)
Changes in unrealized gains (losses)	(1,409)	1,545
Realized (gains) losses reclassified into earnings	287	752
Ending balance	$ (2,865)	$ (1,743)