Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Feb. 28, 2018	Feb. 28, 2017	Feb. 28, 2018	Feb. 28, 2017
Income Statement [Abstract]
Revenues	$ 6,851,093	$ 7,320,406	$ 14,899,982	$ 15,368,656
Cost of goods sold	6,708,610	7,079,664	14,444,237	14,775,217
Gross profit	142,483	240,742	455,745	593,439
Marketing, general and administrative	186,716	157,862	326,881	305,711
Reserve and impairment charges (recoveries), net	(11,349)	72,373	(15,133)	90,730
Operating earnings (loss)	(32,884)	10,507	143,997	196,998
(Gain) loss on investments	(4,100)	(2,782)	(6,919)	4,619
Interest Expense	40,176	39,945	80,878	78,210
Other (income) loss	(14,969)	(14,453)	(37,164)	(58,854)
Equity (income) loss from investments	(39,441)	(35,800)	(77,803)	(76,128)
Income (loss) before income taxes	(14,550)	23,597	185,005	249,151
Income tax expense (benefit)	(181,176)	8,624	(161,240)	25,236
Net income (loss)	166,626	14,973	346,245	223,915
Net income (loss) attributable to noncontrolling interests	(48)	406	(512)	198
Net income (loss) attributable to CHS Inc.	$ 166,674	$ 14,567	$ 346,757	$ 223,717