Asset Impairments (Tables)

9 Months Ended

Sep. 30, 2011

Notes to Financial Statements [Abstract]

Asset Impairment Charges, Pre-tax (non-cash)

Pre-tax (non-cash) asset impairment charges were as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2011		2010		2011		2010
(millions)
East Texas (Onshore US)	$	-	$	-	$	116	$	-
Iron Horse (Onshore US)		-		71		15		71
New Albany Shale (Onshore US)		-		19		-		19
Other		-		10		8		10
Total	$	-	$	100	$	139	$	100