Acquisitions and Divestitures (Tables)

6 Months Ended

Jun. 30, 2011

Acquisitions and Divestitures [Abstract]

Proforma information for the Company as if the acquisition of properties

     The Devon acquisition was completed during the second quarter of 2010. The BP acquisitions and Mariner merger were completed subsequent to the second 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 Six Months
	Ended June 30,		Ended June 30,
	2010		2010
	(In millions)
Revenues and Other	$	3,534	$	6,795
Net Income	$	937	$	1,730
Preferred Stock Dividends		19		38
Income Attributable to Common Stock		918		1,692
Net Income per Common Share — Basic	$	2.41	$	4.44
Net Income per Common Share — Diluted	$	2.36	$	4.36