XML 127 R89.htm IDEA: XBRL DOCUMENT v3.10.0.1
Derivative Instruments - Derivatives Gains and Losses (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Dec. 31, 2017
Derivative Instruments, Gain (Loss) [Line Items]          
Component of the derivative instruments’ gains or losses was excluded from the assessment of hedge effectiveness $ 0 $ 0 $ 0 $ 0  
Cost of goods sold          
Derivative Instruments, Gain (Loss) [Line Items]          
Total (16,100,000) (27,700,000) (25,400,000) (30,600,000)  
OTC commodity swaps          
Derivative Instruments, Gain (Loss) [Line Items]          
Gain from cash flow hedge (40,700,000)   (40,700,000)   $ 7,600,000.0
Ineffectiveness gain 700,000 200,000 700,000 400,000  
OTC commodity swaps | Cost of goods sold          
Derivative Instruments, Gain (Loss) [Line Items]          
Amounts reclassified into cost of goods sold (7,000,000) $ 20,600,000 7,000,000 25,700,000  
Cash flow hedges to be reclassified into cost of goods sold over the next 12 months     54,100,000    
Interest rate contracts          
Derivative Instruments, Gain (Loss) [Line Items]          
Ineffectiveness gain     0    
Interest rate contracts | Interest expense          
Derivative Instruments, Gain (Loss) [Line Items]          
Realized (losses) reclassified out of OCI on commodity derivatives designated as cash flow hedging instruments     (100,000)    
Loss on Discontinuation of Interest Rate Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring, Net     600,000    
Interest rate derivatives          
Derivative Instruments, Gain (Loss) [Line Items]          
Gain from cash flow hedge         $ 400,000
Not Designated as Hedging Instrument | Cost of goods sold          
Derivative Instruments, Gain (Loss) [Line Items]          
(Losses) gains on commodity derivatives not designated as hedging instruments (5,100,000)     3,800,000  
Not Designated as Hedging Instrument | Other Operating Income (Expense) [Member]          
Derivative Instruments, Gain (Loss) [Line Items]          
(Losses) gains on commodity derivatives not designated as hedging instruments [1] (2,900,000)     0  
Not Designated as Hedging Instrument | OTC commodity swaps | Cost of goods sold          
Derivative Instruments, Gain (Loss) [Line Items]          
(Losses) gains on commodity derivatives not designated as hedging instruments     (14,400,000) 8,500,000  
Not Designated as Hedging Instrument | OTC commodity swaps | Other Operating Income (Expense) [Member]          
Derivative Instruments, Gain (Loss) [Line Items]          
(Losses) gains on commodity derivatives not designated as hedging instruments [1]     (2,900,000) 0  
Designated as Hedging Instrument | Cost of goods sold          
Derivative Instruments, Gain (Loss) [Line Items]          
Realized (losses) reclassified out of OCI on commodity derivatives designated as cash flow hedging instruments (8,800,000)     (31,700,000)  
Gains recognized on commodity derivatives due to cash flow hedging ineffectiveness $ 700,000     200,000  
Designated as Hedging Instrument | OTC commodity swaps | Cost of goods sold          
Derivative Instruments, Gain (Loss) [Line Items]          
Realized (losses) reclassified out of OCI on commodity derivatives designated as cash flow hedging instruments     (8,800,000) (39,500,000)  
Gains recognized on commodity derivatives due to cash flow hedging ineffectiveness     $ 700,000 $ 400,000  
[1] For alternative disclosures about "trading derivatives." See separate table below.