Asset Impairments	9 Months Ended
Sep. 30, 2012
Asset Impairments	5. Asset Impairments In the third quarter of 2012, the Corporation recorded impairment charges of $208 million ($116 million after income taxes) due to increases in the Corporation’s estimated abandonment liabilities for non-producing properties, which resulted in the book value of the properties exceeding their fair value. See Note 7, Asset Retirement Obligations. In the second quarter of 2012, the Corporation recorded a charge of $59 million ($36 million after-tax) to reduce the carrying value of certain properties in the Eagle Ford shale in Texas to their fair value (a Level 3 fair value measurement). In the third quarter of 2011, the Corporation recorded impairment charges of $358 million ($140 million after income taxes) related to increases in the Corporation’s estimated abandonment liabilities primarily for non-producing properties. For both years, these asset impairments related to the Exploration and Production (E&P) segment.

Asset Impairments

9 Months Ended

Sep. 30, 2012

5. Asset Impairments

In the third quarter of 2012, the Corporation recorded impairment charges of $208 million ($116 million after income taxes) due to increases in the Corporation’s estimated abandonment liabilities for non-producing properties, which resulted in the book value of the properties exceeding their fair value. See Note 7, Asset Retirement Obligations. In the second quarter of 2012, the Corporation recorded a charge of $59 million ($36 million after-tax) to reduce the carrying value of certain properties in the Eagle Ford shale in Texas to their fair value (a Level 3 fair value measurement). In the third quarter of 2011, the Corporation recorded impairment charges of $358 million ($140 million after income taxes) related to increases in the Corporation’s estimated abandonment liabilities primarily for non-producing properties. For both years, these asset impairments related to the Exploration and Production (E&P) segment.