Derivative Financial Instruments and Hedging Activities - Pretax Gains (Losses) Relating to Cash Flow Hedges Reclassified from AOCL into Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2025	Aug. 31, 2024	Aug. 31, 2023
Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Interest rate derivatives	$ 16,672	$ 16,454	$ (14,853)