Supplemental Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2011

Table Text Block [Abstract]

Supplemental Cash Flow Table

			Years Ended December 31,
millions			2011		2010		2009
Cash paid:
	Interest		$	806	$	672	$	724
	Income taxes		$	262	$	308	$	194
Non-cash investing activities:
	Fair value of properties and equipment received in
		non-cash exchange transactions	$	19	$	37	$	280
	Gain related to the fair-value remeasurement of Anadarko’s
		pre-acquisition 7% equity interest in the Wattenberg Plant	$	21	$	—	$	—
Non-cash financing activities:
	Capital lease obligation		$	(118)	$	226	$	—