Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2023	Aug. 31, 2022	Aug. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 1,900,124	$ 1,677,901	$ 553,569
Other comprehensive (loss) income, net of tax:
Pension and other postretirement benefits	(5,285)	(27,255)	18,295
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	(6,811)	4,019	(6,062)
Foreign currency translation adjustment	2,036	(15,708)	5,300
Other comprehensive income, net of tax	(10,060)	(38,944)	17,533
Comprehensive income	1,890,064	1,638,957	571,102
Comprehensive loss attributable to noncontrolling interests	(314)	(861)	(383)
Comprehensive income attributable to CHS Inc.	$ 1,890,378	$ 1,639,818	$ 571,485