ACQUISITIONS, DISPOSITIONS AND OTHER TRANSACTIONS (Details 2) (USD $)					1 Months Ended	12 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Nov. 30, 2012 BridgeTex bbl mi	Dec. 31, 2013 BridgeTex	Dec. 31, 2012 BridgeTex	Dec. 31, 2013 BridgeTex Magellan	Dec. 31, 2012 BridgeTex Magellan	Dec. 31, 2013 Domestic Oil and Gas Properties	Dec. 31, 2012 Domestic Oil and Gas Properties	Dec. 31, 2011 Producing properties in South Texas	Dec. 31, 2011 Domestic Oil and Gas Properties
Acquisitions, dispositions and other transactions
Cash paid on acquisition										$ 500,000,000	$ 2,300,000,000	$ 1,800,000,000	$ 2,600,000,000
Length of BridgeTex Pipeline (mile)					450
BridgeTex Pipeline, crude oil transportation capacity per day (bbl)					300,000
Percentage of ownership interest						50.00%
Percentage of interest owned by noncontrolling interest partner								50.00%
Cash	3,393,000,000	1,592,000,000	3,781,000,000	2,578,000,000		82,000,000	50,000,000
PP&E	55,821,000,000	52,064,000,000	45,684,000,000			420,000,000	9,000,000
Non-controlling amounts	$ 246,000,000	$ 32,000,000						$ 246,000,000	$ 32,000,000