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Subsequent Events (Notes)	12 Months Ended
Subsequent Events (Notes)	Dec. 31, 2017
Subsequent Events [Abstract]
Subsequent Events [Text Block]	SUBSEQUENT EVENTS On February 9, 2018, President Trump signed into law the H.R.1892, which reinstated a set of tax extender items including the retroactive reinstatement of the federal biodiesel blenders tax credit for 2017. The retroactive credit for 2017 is estimated to result in a net benefit to the Company of approximately $210 million to $220 million in the first half of 2018. The net benefit received will increase the Company’s income before income taxes by a similar amount. The Company will recognize the federal biodiesel blenders tax credit during the first quarter of 2018.