Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies (Details)

v2.4.1.9
Summary of Significant Accounting Policies (Details) (USD $)
12 Months Ended 0 Months Ended
Dec. 31, 2014
Nov. 12, 2014
Dec. 31, 2013
Impairment of Long-Lived Assets      
Impairment of assets $ 0us-gaap_ImpairmentOfLongLivedAssetsHeldForUse    
Stock-Based Compensation      
Number of stock-based compensation awards authorized   10,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized  
Granted (in shares) 2,381,440us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod    
Gathering pipelines and compressor stations      
Property and Equipment      
Useful life 20 years    
Predecessor | Assets under construction      
Property and Equipment      
Property and equipment $ 318,000,000us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_AssetUnderConstructionMember
/ us-gaap_StatementScenarioAxis
= us-gaap_PredecessorMember
  $ 211,000,000us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_AssetUnderConstructionMember
/ us-gaap_StatementScenarioAxis
= us-gaap_PredecessorMember
Phantom share units      
Stock-Based Compensation      
Granted (in shares)   2,361,440us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_PhantomShareUnitsPSUsMember
 
Restricted stock awards      
Stock-Based Compensation      
Granted (in shares)   20,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember