Libyan Operations	9 Months Ended
Sep. 30, 2011
Libyan Operations [Abstract]
Libyan Operations	2. Libyan Operations In response to civil unrest in Libya, a number of measures were taken by the international community in the first quarter of 2011, including the imposition of economic sanctions. As a consequence of the civil unrest and the sanctions, the Corporation delivered force majeure notices to the Libyan government relating to the agreements covering its exploration and production interests in order to protect its rights while it is temporarily prevented from fulfilling its obligations and benefiting from the rights granted by those agreements. During the third quarter, the United States Department of the Treasury’s Office of Foreign Assets Control issued general licenses which permit the Corporation to engage with the Libyan National Oil Company, with certain exceptions. Due to continuing security concerns, these force majeure declarations remain in place and the Corporation is currently unable to determine when or if it will resume operations in Libya. The Corporation’s Libyan production averaged 23,000 barrels of oil equivalent per day (boepd) for the full year of 2010 and 14,000 boepd for the first quarter of 2011. Production was suspended in the first quarter of 2011. The Corporation had proved reserves of 167 million barrels of oil equivalent in Libya at December 31, 2010. At September 30, 2011, the net book value of the Corporation’s exploration and production assets in Libya was approximately $400 million.

2. Libyan Operations

In response to civil unrest in Libya, a number of measures were taken by the international community in the first quarter of 2011, including the imposition of economic sanctions. As a consequence of the civil unrest and the sanctions, the Corporation delivered force majeure notices to the Libyan government relating to the agreements covering its exploration and production interests in order to protect its rights while it is temporarily prevented from fulfilling its obligations and benefiting from the rights granted by those agreements. During the third quarter, the United States Department of the Treasury’s Office of Foreign Assets Control issued general licenses which permit the Corporation to engage with the Libyan National Oil Company, with certain exceptions. Due to continuing security concerns, these force majeure declarations remain in place and the Corporation is currently unable to determine when or if it will resume operations in Libya. The Corporation’s Libyan production averaged 23,000 barrels of oil equivalent per day (boepd) for the full year of 2010 and 14,000 boepd for the first quarter of 2011. Production was suspended in the first quarter of 2011. The Corporation had proved reserves of 167 million barrels of oil equivalent in Libya at December 31, 2010. At September 30, 2011, the net book value of the Corporation’s exploration and production assets in Libya was approximately $400 million.