Derivative Instruments and Hedging Activities - Schedule of Gains and Losses Recorded on the Consolidated Statements of Operations for the Entity's Interest Rate Swaps (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Feb. 28, 2026	Feb. 28, 2025	Feb. 28, 2026	Feb. 28, 2025
Derivative [Line Items]
Derivative cash settlements interest income	$ 0	$ 0	$ 0	$ 0
Derivative forward value gains (losses)			(133,659)	(127,921)
Derivative gains (losses)	(32,370)	40,142	(83,215)	(49,145)
Interest rate swaps
Derivative [Line Items]
Derivative cash settlements interest income	12,592	20,309	50,444	78,776
Derivative forward value gains (losses)	(44,962)	19,833	(133,659)	(127,921)
Derivative gains (losses)	(32,370)	$ 40,142	(83,215)	$ (49,145)
Derivative, notional amount, terminated	$ 300,000		$ 300,000