Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2025	Aug. 31, 2024	Aug. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 597,995	$ 1,102,659	$ 1,900,124
Other comprehensive (loss) income, net of tax:
Pension and other postretirement benefits	(3,605)	(22,048)	(5,285)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	986	(255)	(6,811)
Foreign currency translation adjustment	(7,211)	(8,844)	2,036
Other comprehensive loss, net of tax	(9,830)	(31,147)	(10,060)
Comprehensive income	588,165	1,071,512	1,890,064
Comprehensive income (loss) attributable to noncontrolling interests	78	340	(314)
Comprehensive income attributable to CHS Inc.	$ 588,087	$ 1,071,172	$ 1,890,378