Inventories - Schedule of Inventories (Details) - USD ($) $ in Thousands	Aug. 31, 2018	May 31, 2018	Feb. 28, 2018	Nov. 30, 2017	Aug. 31, 2017	May 31, 2017	Feb. 28, 2017	Nov. 30, 2016
Inventory Disclosure [Abstract]
Grain and oilseed	$ 1,298,522				$ 1,121,141
Energy	715,161				755,886
Crop nutrients	246,326				248,699
Feed and farm supplies	391,906				402,293
Processed grain and oilseed	99,426				49,723
Other	17,308				23,862
Total inventories	$ 2,768,649	$ 2,913,507	$ 3,676,325	$ 3,111,963	$ 2,601,604	$ 2,688,949	$ 3,730,682	$ 3,143,551