Property, Plant and Equipment

12 Months Ended

Dec. 31, 2013

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment Disclosure [Text Block]

Property, Plant and Equipment

Classes and Depreciation

As of December 31, 2013 and 2012, our property, plant and equipment consisted of the following (in millions):

	December 31,
	2013			2012
Natural gas, liquids, crude oil and CO2 pipelines	$	14,361		$	11,628
Natural gas, liquids, CO2, and terminals station equipment	14,559			11,986
Natural gas, liquids (including linefill), and transmix processing	259			358
Other	2,045			1,713
Accumulated depreciation, depletion, and amortization	(6,970		)	(5,817		)
	$	24,254		$	19,868
Land and land right-of-way	1,040			1,029
Construction work in process	2,111			1,433
Property, plant and equipment, net	$	27,405		$	22,330

As of December 31, 2013 and 2012, we included regulated property, plant and equipment amounts of $9,034 million and $8,954 million, respectively, within “Property, plant and equipment, net” on our accompanying consolidated balance sheets. These regulated amounts constituted 33% and 40%, respectively, of our total property, plant and equipment amounts at each reporting date. Depreciation, depletion, and amortization expense charged against property, plant and equipment was $1,311 million in 2013, $1,065 million in 2012 and $887 million in 2011.

Asset Retirement Obligations

As of December 31, 2013 and 2012, we recognized asset retirement obligations in the aggregate amount of $199 million and $170 million, respectively.  The majority of our asset retirement obligations are associated with our CO₂ business segment, where we are required to plug and abandon oil and gas wells that have been removed from service and to remove our surface wellhead equipment and compressors.  We included $25 million and $31 million, respectively, of our total asset retirement obligations as of December 31, 2013 and 2012 within “Other current liabilities” in our accompanying consolidated balance sheets.  The remaining amounts are included within “Other long-term liabilities and deferred credits” at each reporting date.

We have various other obligations throughout our businesses to remove facilities and equipment on rights-of-way and other leased facilities.  We currently cannot reasonably estimate the fair value of these obligations because the associated assets have indeterminate lives.  These assets include pipelines, certain processing plants and distribution facilities, and certain bulk and liquids terminal facilities.  An asset retirement obligation, if any, will be recognized once sufficient information is available to reasonably estimate the fair value of the obligation.