Segment Information (Tables)

6 Months Ended

Jun. 30, 2011

Segment Information

Schedule Of Segment Reporting Information, By Segment

	Exploration and   Production		Marketing, Gathering and Compression			Other   Operations			Intercompany   Eliminations			Consolidated   Total
	($ in millions)
Three Months Ended June 30, 2011:
Revenues	$	1,792	$	2,617		$	275		$	(1,366	)	$	3,318
Intersegment revenues		—		(1,213	)		(153	)		1,366			—
Total revenues	$	1,792	$	1,404		$	122		$	—		$	3,318
Income (loss) before income taxes	$	808	$	75		$	21		$	(69	)	$	835
Three Months Ended June 30, 2010:
Revenues	$	1,161	$	1,719		$	181		$	(1,049	)	$	2,012
Intersegment revenues		—		(926	)		(123	)		1,049			—
Total revenues	$	1,161	$	793		$	58		$	—		$	2,012
Income (loss) before income taxes	$	403	$	23		$	(14	)	$	2		$	414
Six Months Ended June 30, 2011:
Revenues	$	2,286	$	4,838		$	523		$	(2,717	)	$	4,930
Intersegment revenues		—		(2,417	)		(300	)		2,717			—
Total revenues	$	2,286	$	2,421		$	223		$	—		$	4,930
Income (loss) before income taxes	$	511	$	160		$	42		$	(144	)	$	569
Six Months Ended June 30, 2010:
Revenues	$	3,059	$	3,570		$	351		$	(2,170	)	$	4,810
Intersegment revenues		—		(1,933	)		(237	)		2,170			—
Total revenues	$	3,059	$	1,637		$	114		$	—		$	4,810
Income (loss) before income taxes	$	1,579	$	55		$	(25	)	$	5		$	1,614
As of June 30 2011:
Total assets	$	32,855	$	3,678		$	1,301		$	(1,178	)	$	36,656
As of December 31, 2010:
Total assets	$	33,560	$	3,458		$	854		$	(693	)	$	37,179