v2.4.0.8
Segment Information (Summary Of Financial Data) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Segment Reporting Information [Line Items]        
Revenues $ 837,858 $ 804,696 $ 1,571,747 $ 1,570,172
Gross profit (loss) 78,315 32,611 179,064 59,825
Operating income (loss) 58,946 18,562 137,290 31,267
Revenue From External Customers [Member]
       
Segment Reporting Information [Line Items]        
Revenues 837,858 804,696 1,571,747 1,570,172
Revenue Including Intersegment Activity [Member]
       
Segment Reporting Information [Line Items]        
Revenues 1,843,479 1,478,370 3,497,258 2,790,404
Ethanol Production [Member]
       
Segment Reporting Information [Line Items]        
Gross profit (loss) 35,171 10,729 106,859 11,959
Operating income (loss) 30,111 7,006 96,337 4,657
Ethanol Production [Member] | Revenue From External Customers [Member]
       
Segment Reporting Information [Line Items]        
Revenues (71,054) [1] 34,338 [1] (98,486) [1] 78,745 [1]
Ethanol Production [Member] | Intersegment Revenue [Member]
       
Segment Reporting Information [Line Items]        
Revenues 603,529 496,066 1,169,332 960,717
Ethanol Production [Member] | Revenue Including Intersegment Activity [Member]
       
Segment Reporting Information [Line Items]        
Revenues 532,475 530,404 1,070,846 1,039,462
Corn Oil Production [Member]
       
Segment Reporting Information [Line Items]        
Gross profit (loss) 10,931 7,873 18,746 15,782
Operating income (loss) 10,874 7,821 18,582 15,631
Corn Oil Production [Member] | Revenue From External Customers [Member]
       
Segment Reporting Information [Line Items]        
Revenues (7) [1]      
Corn Oil Production [Member] | Intersegment Revenue [Member]
       
Segment Reporting Information [Line Items]        
Revenues 20,381 16,315 36,765 32,014
Corn Oil Production [Member] | Revenue Including Intersegment Activity [Member]
       
Segment Reporting Information [Line Items]        
Revenues 20,374 16,315 36,765 32,014
Agribusiness [Member]
       
Segment Reporting Information [Line Items]        
Gross profit (loss) 2,499 945 5,475 2,171
Operating income (loss) 1,269 248 2,205 617
Agribusiness [Member] | Revenue From External Customers [Member]
       
Segment Reporting Information [Line Items]        
Revenues 33,488 [1] 15,998 [1] 51,729 [1] 38,124 [1]
Agribusiness [Member] | Intersegment Revenue [Member]
       
Segment Reporting Information [Line Items]        
Revenues 347,116 159,170 651,354 224,088
Agribusiness [Member] | Revenue Including Intersegment Activity [Member]
       
Segment Reporting Information [Line Items]        
Revenues 380,604 175,168 703,083 262,212
Marketing And Distribution [Member]
       
Segment Reporting Information [Line Items]        
Gross profit (loss) 9,899 13,404 50,615 30,459
Operating income (loss) 4,391 9,210 36,885 22,196
Marketing And Distribution [Member] | Revenue From External Customers [Member]
       
Segment Reporting Information [Line Items]        
Revenues 875,431 [1] 754,360 [1] 1,618,504 [1] 1,453,303 [1]
Marketing And Distribution [Member] | Intersegment Revenue [Member]
       
Segment Reporting Information [Line Items]        
Revenues 34,595 2,123 68,060 3,413
Marketing And Distribution [Member] | Revenue Including Intersegment Activity [Member]
       
Segment Reporting Information [Line Items]        
Revenues 910,026 756,483 1,686,564 1,456,716
Intersegment Eliminations [Member]
       
Segment Reporting Information [Line Items]        
Gross profit (loss) 19,815 (340) (2,631) (546)
Operating income (loss) 19,815 (340) (2,571) (500)
Intersegment Eliminations [Member] | Intersegment Revenue [Member]
       
Segment Reporting Information [Line Items]        
Revenues (1,005,621) (673,674) (1,925,511) (1,220,232)
Corporate Activities [Member]
       
Segment Reporting Information [Line Items]        
Operating income (loss) $ (7,514) $ (5,383) $ (14,148) $ (11,334)
[1] Revenues from external customers include realized gains and losses from derivative financial instruments.