Inventories (Details) $ in Thousands, bu in Millions	Mar. 31, 2022 USD ($) bu	Dec. 31, 2021 USD ($) bu	Mar. 31, 2021 USD ($) bu
Inventory, Net [Abstract]
Grain and other agricultural products	$ 1,435,763	$ 1,427,708	$ 971,914
Frac sand and propane	17,529	23,780	8,388
Ethanol and co-products	193,303	184,354	136,234
Plant nutrients and cob products	303,708	178,696	171,101
Total inventories	1,950,303	1,814,538	1,287,637
Readily marketable inventory	$ 1,413,500	$ 1,410,900	$ 942,400
Bushels of grain held in storage for others and excluded from inventory calculations | bu	1.0	3.0	1.6