Goodwill (Tables)

12 Months Ended

Dec. 31, 2013

Goodwill And Intangible Assets Disclosure [Abstract]

Changes in Carrying Amount of Goodwill

The changes in the carrying amount of goodwill, all of which relate to the E&P segment, are as follows:

	2013			2012
	(In millions)
Beginning balance at January 1	$	2,208		$	2,305
Dispositions*		(339	)		(97	)
Ending balance at December 31	$	1,869		$	2,208

* Includes $76 million and $52 million reclassified to Assets held for sale in 2013 and 2012, respectively.