Derivatives (Commodity Derivative Contracts Outstanding) (Details) gal in Thousands, bu in Thousands, T in Thousands	Dec. 31, 2023 bu	Dec. 31, 2023 gal	Dec. 31, 2023 T	Dec. 31, 2022 bu	Dec. 31, 2022 gal	Dec. 31, 2022 T
Amounts of quantities outstanding included in commodity derivative contracts
Derivative, notional amount	911,026	416,381	3,993	1,090,085	365,484	3,629
Non-exchange traded
Amounts of quantities outstanding included in commodity derivative contracts
Derivative, notional amount	650,828	244,139	3,168	761,493	223,482	3,048
Non-exchange traded | Corn
Amounts of quantities outstanding included in commodity derivative contracts
Derivative, notional amount	519,825	0	0	567,405	0	0
Non-exchange traded | Soybeans
Amounts of quantities outstanding included in commodity derivative contracts
Derivative, notional amount	41,848	0	0	56,608	0	0
Non-exchange traded | Wheat
Amounts of quantities outstanding included in commodity derivative contracts
Derivative, notional amount	66,953	0	0	102,716	0	0
Non-exchange traded | Oats
Amounts of quantities outstanding included in commodity derivative contracts
Derivative, notional amount	15,355	0	0	24,710	0	0
Non-exchange traded | Ethanol
Amounts of quantities outstanding included in commodity derivative contracts
Derivative, notional amount	0	206,986	0	0	178,935	0
Non-exchange traded | Soybean meal
Amounts of quantities outstanding included in commodity derivative contracts
Derivative, notional amount	0	0	546	0	0	570
Non-exchange traded | Dried distillers grain
Amounts of quantities outstanding included in commodity derivative contracts
Derivative, notional amount	0	0	740	0	0	449
Non-exchange traded | Other
Amounts of quantities outstanding included in commodity derivative contracts
Derivative, notional amount	6,847	37,153	1,882	10,054	44,547	2,029
Exchange traded
Amounts of quantities outstanding included in commodity derivative contracts
Derivative, notional amount	260,198	172,242	825	328,592	142,002	581
Exchange traded | Corn
Amounts of quantities outstanding included in commodity derivative contracts
Derivative, notional amount	160,795	0	0	170,280	0	0
Exchange traded | Soybeans
Amounts of quantities outstanding included in commodity derivative contracts
Derivative, notional amount	34,250	0	0	46,380	0	0
Exchange traded | Wheat
Amounts of quantities outstanding included in commodity derivative contracts
Derivative, notional amount	64,778	0	0	111,567	0	0
Exchange traded | Oats
Amounts of quantities outstanding included in commodity derivative contracts
Derivative, notional amount	375	0	0	365	0	0
Exchange traded | Ethanol
Amounts of quantities outstanding included in commodity derivative contracts
Derivative, notional amount	0	97,272	0	0	94,206	0
Exchange traded | Propane
Amounts of quantities outstanding included in commodity derivative contracts
Derivative, notional amount	0	74,550	0	0	47,208	0
Exchange traded | Other
Amounts of quantities outstanding included in commodity derivative contracts
Derivative, notional amount	0	420	825	0	588	581