Rendering

Component: (Network and Table)
Network
2412402 - Disclosure - Asset Retirement Obligations - Asset Retirement Obligations Table (Details)
(http://www.westerngas.com/role/AssetRetirementObligationsAssetRetirementObligationsTableDetails)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001414475 (http://www.sec.gov/CIK)
Asset Retirement Obligation Disclosure [Abstract]Period [Axis]
2016-01-01 - 2016-12-31
2015-01-01 - 2015-12-31
Asset Retirement Obligation Disclosure [Abstract]
 
 
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
 
 
Carrying amount of asset retirement obligations at beginning of year
130,631,000  
119,855,000  
Liabilities incurred
5,515,000  
9,490,000  
Liabilities settled
(10,650,000) 
(7,905,000) 
Accretion expense
6,794,000  
6,381,000  
Revisions in estimated liabilities
10,117,000  
2,810,000  
Carrying amount of asset retirement obligations at end of year
142,407,000  
 
130,631,000