Derivatives (Commodity Derivative Contracts Outstanding) (Details) gal in Thousands, bu in Thousands, T in Thousands	Dec. 31, 2024 bu	Dec. 31, 2024 gal	Dec. 31, 2024 T	Dec. 31, 2023 bu	Dec. 31, 2023 gal	Dec. 31, 2023 T
Amounts of quantities outstanding included in commodity derivative contracts
Derivative, notional amount	1,116,302	553,607	3,685	911,026	416,381	3,993
Non-exchange traded
Amounts of quantities outstanding included in commodity derivative contracts
Derivative, notional amount	754,126	334,019	3,241	650,828	244,139	3,168
Non-exchange traded | Corn
Amounts of quantities outstanding included in commodity derivative contracts
Derivative, notional amount	607,172	0	0	519,825	0	0
Non-exchange traded | Soybeans
Amounts of quantities outstanding included in commodity derivative contracts
Derivative, notional amount	32,548	0	0	41,848	0	0
Non-exchange traded | Wheat
Amounts of quantities outstanding included in commodity derivative contracts
Derivative, notional amount	88,503	0	0	66,953	0	0
Non-exchange traded | Oats
Amounts of quantities outstanding included in commodity derivative contracts
Derivative, notional amount	21,595	0	0	15,355	0	0
Non-exchange traded | Ethanol
Amounts of quantities outstanding included in commodity derivative contracts
Derivative, notional amount	0	280,999	0	0	206,986	0
Non-exchange traded | Soybean meal
Amounts of quantities outstanding included in commodity derivative contracts
Derivative, notional amount	0	0	524	0	0	546
Non-exchange traded | Dried distillers grain
Amounts of quantities outstanding included in commodity derivative contracts
Derivative, notional amount	0	0	745	0	0	740
Non-exchange traded | Other
Amounts of quantities outstanding included in commodity derivative contracts
Derivative, notional amount	4,308	53,020	1,972	6,847	37,153	1,882
Exchange traded
Amounts of quantities outstanding included in commodity derivative contracts
Derivative, notional amount	362,176	219,588	444	260,198	172,242	825
Exchange traded | Corn
Amounts of quantities outstanding included in commodity derivative contracts
Derivative, notional amount	214,810	0	0	160,795	0	0
Exchange traded | Soybeans
Amounts of quantities outstanding included in commodity derivative contracts
Derivative, notional amount	23,390	0	0	34,250	0	0
Exchange traded | Wheat
Amounts of quantities outstanding included in commodity derivative contracts
Derivative, notional amount	123,661	0	0	64,778	0	0
Exchange traded | Oats
Amounts of quantities outstanding included in commodity derivative contracts
Derivative, notional amount	315	0	0	375	0	0
Exchange traded | Ethanol
Amounts of quantities outstanding included in commodity derivative contracts
Derivative, notional amount	0	99,162	0	0	97,272	0
Exchange traded | Propane
Amounts of quantities outstanding included in commodity derivative contracts
Derivative, notional amount	0	118,986	0	0	74,550	0
Exchange traded | Other
Amounts of quantities outstanding included in commodity derivative contracts
Derivative, notional amount	0	1,440	444	0	420	825