Consolidated Statements of Income (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Cost of product	$ 118,085	[1]	$ 93,460	[1],[2]	$ 210,035	[1]	$ 176,543	[1],[2]
Operation and maintenance	50,875	[1]	41,669	[1],[2]	91,407	[1]	78,408	[1],[2]
General and administrative	8,757	[1]	8,209	[1],[2]	18,143	[1]	17,138	[1],[2]
Affiliated Entity [Member]
Cost of product	35,230	[3]	32,119	[3]	51,864	[3]	64,048	[3]
Operation and maintenance	16,817	[4]	14,186	[4]	27,916	[4]	27,552	[4]
General and administrative	$ 6,644	[5]	$ 5,803	[5]	$ 13,637	[5]	$ 11,891	[5]

[1] Cost of product includes product purchases from Anadarko (as defined in Note 1) of $35.2 million and $51.9 million for the three and six months ended June 30, 2014, respectively, and $32.1 million and $64.0 million for the three and six months ended June 30, 2013, respectively. Operation and maintenance includes charges from Anadarko of $16.8 million and $27.9 million for the three and six months ended June 30, 2014, respectively, and $14.2 million and $27.6 million for the three and six months ended June 30, 2013, respectively. General and administrative includes charges from Anadarko of $6.6 million and $13.6 million for the three and six months ended June 30, 2014, respectively, and $5.8 million and $11.9 million for the three and six months ended June 30, 2013, respectively. See Note 5.

[2] Financial information has been recast to include the financial position and results attributable to the TEFR Interests. See Note 1 and Note 2.

[3] Represents amounts earned on and subsequent to the date of acquisition of WES assets, as well as amounts earned by Anadarko on a historical basis related to WES assets prior to the acquisition of such assets by WES, recognized under gathering, treating or processing agreements, and purchase and sale agreements.

[4] Represents expenses incurred on and subsequent to the date of the acquisition of WES assets, as well as expenses incurred by Anadarko on a historical basis related to WES assets prior to the acquisition of such assets by WES.

[5] Represents general and administrative expense incurred on and subsequent to the date of WES’s acquisition of WES assets, as well as a management services fee for reimbursement of expenses incurred by Anadarko for periods prior to the acquisition of WES assets by WES. These amounts include equity-based compensation expense allocated to WES and WGP by Anadarko (see WES LTIP and WGP LTIP and Anadarko Incentive Plans within this Note 5) and amounts charged by Anadarko under the WGP omnibus agreement.