XML 46 R34.htm IDEA: XBRL DOCUMENT v3.7.0.1
Derivatives - Not Designated as Hedging Instruments (Details)
$ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2017
USD ($)
$ / MMBTU
MMBbls
Bcf
Dec. 31, 2016
USD ($)
$ / MMBTU
MMBbls
Bcf
Oil (in barrels) | Net sales    
Outstanding commodity derivatives contracts not designated as hedging instruments    
Gain (loss) on derivatives not designated as hedges | $ $ 9 $ (5)
Natural gas (in cubic feet) | Net sales    
Outstanding commodity derivatives contracts not designated as hedging instruments    
Gain (loss) on derivatives not designated as hedges | $ $ 3 $ 1
Long position | Oil (in barrels)    
Outstanding commodity derivatives contracts not designated as hedging instruments    
Derivative, Nonmonetary Notional Amount, Volume | MMBbls 73 67
Price (in USD per Bbl or mmbtu) | $ / MMBTU 50.66 53.86
Short position | Natural gas (in cubic feet)    
Outstanding commodity derivatives contracts not designated as hedging instruments    
Derivative, Nonmonetary Notional Amount, Volume | Bcf 26 12
Price (in USD per Bbl or mmbtu) | $ / MMBTU 2.86 3.19