Inventories (Details) $ in Thousands, bu in Millions	Jun. 30, 2022 USD ($) bu	Dec. 31, 2021 USD ($) bu	Jun. 30, 2021 USD ($) bu
Inventory, Net [Abstract]
Grain and other agricultural products	$ 1,241,933	$ 1,427,708	$ 636,380
Frac sand and propane	19,483	23,780	11,265
Ethanol and co-products	179,175	184,354	155,993
Plant nutrients and cob products	177,735	178,696	101,286
Total inventories	1,618,326	1,814,538	904,924
Readily marketable inventory	$ 1,214,400	$ 1,410,900	$ 612,200
Bushels of grain held in storage for others and excluded from inventory calculations | bu	1.3	3.0	1.2