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Transactions With Affiliates (tables)

3 Months Ended

Mar. 31, 2013

Transactions With Affiliates [Abstract]


per barrel except natural gas	2013				2014				2015				2016

Ethane	$	18.32	−	30.10	$	18.36	−	30.53	$	18.41	−	23.41	$	23.11
Propane	$	45.90	−	55.84	$	46.47	−	53.78	$	47.08	−	52.99	$	52.90
Isobutane	$	60.44	−	77.66	$	61.24	−	75.13	$	62.09	−	74.02	$	73.89
Normal butane	$	53.20	−	68.24	$	53.89	−	66.01	$	54.62	−	65.04	$	64.93
Natural gasoline	$	70.89	−	92.23	$	71.85	−	83.04	$	72.88	−	81.82	$	81.68
Condensate	$	74.04	−	85.84	$	75.22	−	83.04	$	76.47	−	81.82	$	81.68
Natural gas (per MMbtu)	$	3.75	−	6.09	$	4.45	−	6.20	$	4.66	−	5.96	$	4.87

Gains (Losses) on Commodity Price Swap Agreements Table


			Three Months Ended
			March 31,
thousands			2013		2012
Gains (losses) on commodity price swap agreements related to sales: ⁽¹⁾
	Natural gas sales		$	5,380	$	9,850
	Natural gas liquids sales			21,305		354
		Total		26,685		10,204
Losses on commodity price swap agreements related to purchases ⁽²⁾				(19,854)		(17,192)
Net gains (losses) on commodity price swap agreements			$	6,831	$	(6,988)

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(1) Reported in affiliate natural gas, NGLs and condensate sales in the consolidated statements of income in the period in which the related sale is recorded.

(2) Reported in cost of product in the consolidated statements of income in the period in which the related purchase is recorded.

Equipment Purchase and Sale


	Three Months Ended
	March 31,

	Purchases
thousands	2013		2012
Cash consideration	$	221	$	4,468
Net carrying value		227		571
Partners’ capital adjustment	$	(6)	$	3,897

Summary of Affiliate Transactions Table


		Three Months Ended
		March 31,
thousands		2013		2012
Revenues ⁽¹⁾		$	181,550	$	170,773
Cost of product ⁽¹⁾			31,929		33,426
Operation and maintenance ⁽²⁾			13,366		12,473
General and administrative ⁽³⁾			6,088		8,833
	Operating expenses		51,383		54,732
Interest income, net ⁽⁴⁾			4,225		4,225
Interest expense ⁽⁵⁾			—		1,315
Distributions to WGP unitholders ⁽⁶⁾			7,143		—
Contributions from Anadarko as a Chipeta noncontrolling interest owner ⁽⁷⁾			—		4,824
Distributions to Anadarko as a Chipeta noncontrolling interest owner ⁽⁷⁾			—		2,520

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(1) Represents amounts recognized under gathering, treating or processing agreements, and purchase and sale agreements.

(2) Represents expenses incurred during periods including 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.

(3) Represents general and administrative expense incurred during periods including 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 by Anadarko (see Equity incentive plan and Anadarko incentive plans within this Note 5).

(4) Represents interest income recognized on the note receivable from Anadarko.

(5) Represents interest expense recognized on the note payable to Anadarko (see Note 8) and, for the three months ended March 31, 2012, interest imputed on the reimbursement payable to Anadarko for certain expenditures Anadarko incurred in 2011 related to the construction of the Brasada and Lancaster plants. In the fourth quarter of 2012, WES repaid the note payable to Anadarko and the reimbursement payable to Anadarko related to the construction of the Brasada and Lancaster plants. See Note receivable from and amounts payable to Anadarko within this Note 5.

(6) Represents distributions paid under WGP's partnership agreement.

(7) As described in Note 2, WES acquired Anadarko's then remaining 24% membership interest in Chipeta on August 1, 2012, and accounted for the acquisition on a prospective basis. As such, contributions from noncontrolling interest owners and distributions to noncontrolling interest owners subsequent to the acquisition date no longer reflect contributions from or distributions to Anadarko.