v2.4.0.8
Other Information (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Sep. 30, 2014
Dec. 31, 2013
Sep. 30, 2014
Ventura Basin
Amount due from joint interest partners included in Other current assets $ 137 $ 97  
Asset retirement obligations included in Other long-term liabilities 380 388  
Purchase agreement for acquisition of oil and gas properties     $ 200