Divestitures	9 Months Ended
Sep. 30, 2011
Divestitures [Abstract]
Divestitures	2. Divestitures During 2011, we sold non-core oil and natural gas properties located in our Central, Western and Southern divisions in several transactions from which we received proceeds that totaled approximately $570 million. During 2010, we also sold non-core natural gas producing properties located in our Southern division for approximately $22 million. No gain or loss was recorded on the sale of the oil and gas properties in either year. Additionally, during the nine months ended September 30, 2010 we completed the sale of certain of our interests in Mexican pipeline and compression assets for approximately $300 million and recorded a pretax gain of approximately $80 million in earnings from unconsolidated affiliates.

Divestitures

9 Months Ended

Sep. 30, 2011

2. Divestitures

During 2011, we sold non-core oil and natural gas properties located in our Central, Western and Southern divisions in several transactions from which we received proceeds that totaled approximately $570 million. During 2010, we also sold non-core natural gas producing properties located in our Southern division for approximately $22 million. No gain or loss was recorded on the sale of the oil and gas properties in either year. Additionally, during the nine months ended September 30, 2010 we completed the sale of certain of our interests in Mexican pipeline and compression assets for approximately $300 million and recorded a pretax gain of approximately $80 million in earnings from unconsolidated affiliates.