CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
	Aug. 31, 2023	Aug. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 228,284	$ 161,874
Other comprehensive income (loss):
Reclassification to earnings of realized gains on derivatives	(155)	(189)
Defined benefit plan adjustments	53	100
Other comprehensive loss	(102)	(89)
Total comprehensive income	228,182	161,785
Less: Total comprehensive income attributable to noncontrolling interests	(427)	(193)
Total comprehensive income attributable to CFC	$ 227,755	$ 161,592