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Investments - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
Investments - Narrative (Details) - USD ($) $ in Thousands	Nov. 30, 2021	Nov. 30, 2020	Aug. 31, 2021
Schedule of Equity Method Investments [Line Items]
Equity income from investments	$ (151,345)	$ (50,023)
Investments	3,809,509		$ 3,669,111
Investment Company, Distributable Earnings	$ 575,200
CF Nitrogen LLC [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage	10.00%
Equity Method Investments	$ 2,783,637		2,667,164
Ventura Foods, LLC
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	$ 389,818		388,612
TEMCO, LLC
Schedule of Equity Method Investments [Line Items]
Ownership percentage	50.00%
Equity Method Investments	$ 44,319		31,464
Ardent Mills LLC [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage	12.00%
Equity Method Investments	$ 225,889		$ 220,132
Nitrogen Production [Member]
Schedule of Equity Method Investments [Line Items]
Equity income from investments	(116,473)	(21,688)
Corporate and Other
Schedule of Equity Method Investments [Line Items]
Equity income from investments	(14,038)	(17,672)
Ag
Schedule of Equity Method Investments [Line Items]
Equity income from investments	$ (19,734)	$ (10,174)