Acquisitions and Divestitures (Tables)

9 Months Ended

Sep. 30, 2011

Acquisitions and Divestitures [Abstract]

Proforma information for the Company as if the acquisition of properties

     The Devon and BP Permian acquisitions were completed during the second and third quarters of 2010 respectively. The remaining BP acquisitions and Mariner merger were completed subsequent to the third quarter of 2010. The following table presents pro forma information for Apache as if the acquisitions and merger occurred prior to January 1, 2010:

	For the Quarter		For the Nine Months
	Ended September 30,		Ended September 30,
	2010		2010
	(In millions)
Revenues and Other	$	3,447	$	10,241
Net Income	$	812	$	2,542
Preferred Stock Dividends		19		57
Income Attributable to Common Stock		793		2,485
Net Income per Common Share — Basic	$	2.08	$	6.52
Net Income per Common Share — Diluted	$	2.02	$	6.41