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Summary of Significant Accounting Policies (tables)
 12 Months Ended
Dec. 31, 2013
Accounting Policies [Abstract]  
Assets Table
As of December 31, 2013, WES’s assets, exclusive of interests in Fort Union, White Cliffs, Rendezvous and the Mont Belvieu JV accounted for under the equity method, consisted of the following:
 
 
Owned and
Operated
 
Operated
Interests
 
Non-Operated
Interests
Natural gas gathering systems
 
13

 
1

 
5

Natural gas treating facilities
 
8

 
—

 
—

Natural gas processing facilities
 
8

 
3

 
—

NGL pipelines
 
3

 
—

 
—

Natural gas pipelines
 
3

 
—

 
—
Equity-Method Investments Table
The following table presents the activity of WES’s investments in equity of Fort Union, White Cliffs, Rendezvous and Mont Belvieu JV:
 
Equity Investments
thousands
Fort Union (1)
 
White Cliffs (2)
 
Rendezvous (3)
 
Mont
Belvieu JV (4)
Balance at December 31, 2011
$
22,268

 
$
17,710

 
$
69,839

 
$
—

Investment earnings, net of amortization
6,383

 
7,871

 
1,857

 
—

Contributions
—

 
862

 
—

 
—

Distributions
(5,198
)
 
(8,876
)
 
(6,586
)
 
—

Balance at December 31, 2012
$
23,453

 
$
17,567

 
$
65,110

 
$
—

Initial investment
—

 
—

 
—

 
78,129

Investment earnings, net of amortization
6,273

 
9,681

 
2,088

 
5,690

Contributions
16

 
19,087

 
—

 
38,661

Distributions
(4,570
)
 
(9,266
)
 
(4,029
)
 
—

Distributions in excess of cumulative earnings
—

 
(2,030
)
 
(2,241
)
 
—

Balance at December 31, 2013
$
25,172

 
$
35,039

 
$
60,928

 
$
122,480

                                                                                                                                                                                   
(1)
WES has a 14.81% interest in Fort Union, a joint venture which owns a gathering pipeline and treating facilities in the Powder River Basin. Anadarko is the construction manager and physical operator of the Fort Union facilities. Certain business decisions, including, but not limited to, decisions with respect to significant expenditures or contractual commitments, annual budgets, material financings, dispositions of assets or amending the owners’ firm gathering agreements, require 65% or unanimous approval of the owners.
(2)
WES has a 10% interest in White Cliffs, a limited liability company which owns a crude oil pipeline that originates in Platteville, Colorado and terminates in Cushing, Oklahoma. The third-party majority owner is the manager of the White Cliffs operations. Certain business decisions, including, but not limited to, approval of annual budgets and decisions with respect to significant expenditures, contractual commitments, acquisitions, material financings, dispositions of assets or admitting new members, require more than 75% approval of the members.
(3)
WES has a 22% interest in Rendezvous, a limited liability company that operates gas gathering facilities in Southwestern Wyoming. Certain business decisions, including, but not limited to, decisions with respect to significant expenditures or contractual commitments, annual budgets, material financings, dispositions of assets or amending the members’ gas servicing agreements, require unanimous approval of the members.
(4) 
WES has a 25% interest in the Mont Belvieu JV, an entity formed to design, construct, and own two fractionation trains located in Mont Belvieu, Texas. A third party is the operator of the Mont Belvieu JV fractionation trains. Certain business decisions, including, but not limited to, decisions with respect to the execution of contracts, settlements, disposition of assets, or the creation, appointment, or removal of officer positions require 50% or unanimous approval of the owners.
Summarized Statements of Equity Method Investment Affiliates Presented at 100 Percent Tables
The following tables present the summarized combined financial information for WES’s equity method investments (amounts represents 100% of investee financial information):
 
 
Year Ended December 31,
thousands
 
2013
 
2012
 
2011
Consolidated Statements of Income
 
 
 
 
 
 
Revenues
 
$
256,632

 
$
199,764

 
$
153,131

Operating income
 
176,370

 
135,577

 
90,549

Net income
 
175,060

 
134,066

 
88,521

 
 
December 31,
thousands
 
2013
 
2012
Consolidated Balance Sheets
 
 
 
 
Current assets
 
$
171,457

 
$
44,474

Property, plant and equipment, net
 
1,174,034

 
611,441

Other assets
 
38,258

 
45,100

Total assets
 
$
1,383,749

 
$
701,015

Current liabilities
 
86,606

 
20,174

Non-current liabilities
 
32,704

 
50,759

Equity
 
1,264,439

 
630,082

Total liabilities and equity
 
$
1,383,749

 
$
701,015