Noncontrolling Interests	3 Months Ended
Noncontrolling Interests	Mar. 31, 2015
Noncontrolling Interest Items [Abstract]
Noncontrolling Interests	6. Noncontrolling Interests Western Gas Equity Partners, LP (WGP) is a publicly traded consolidated subsidiary that owns partnership interests in WES. At March 31, 2015, Anadarko’s ownership interest in WGP consisted of an 88.3% limited partner interest and the entire non-economic general partner interest. The remaining 11.7% limited partner interest in WGP was owned by the public. WES, a publicly traded consolidated subsidiary, is a limited partnership that acquires, owns, develops, and operates midstream assets. During the three months ended March 31, 2015, WES issued 480 thousand common units to the public under its continuous offering program, raising net proceeds of $31 million. In 2014, WES issued 11 million Class C units to Anadarko to partially fund the acquisition of DBM. These Class C units receive distributions in the form of additional Class C units until the end of 2017 unless WES elects to convert the units earlier or Anadarko extends the conversion date. During the three months ended March 31, 2015, WES distributed 46 thousand Class C units to Anadarko. At March 31, 2015, WGP’s ownership interest in WES consisted of a 34.8% limited partner interest, the entire 1.8% general partner interest, and all of the WES incentive distribution rights. At March 31, 2015, Anadarko also owned an 8.3% limited partner interest in WES through other subsidiaries’ ownership of common and Class C units. The remaining 55.1% limited partner interest in WES was owned by the public.

The entire disclosure for noncontrolling interest in consolidated subsidiaries, which could include the name of the subsidiary, the ownership percentage held by the parent, the ownership percentage held by the noncontrolling owners, the amount of the noncontrolling interest, the location of this amount on the balance sheet (when not reported separately), an explanation of the increase or decrease in the amount of the noncontrolling interest, the noncontrolling interest share of the net Income or Loss of the subsidiary, the location of this amount on the income statement (when not reported separately), the nature of the noncontrolling interest such as background information and terms, the amount of the noncontrolling interest represented by preferred stock, a description of the preferred stock, and the dividend requirements of the preferred stock.

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