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Acquisition (Details Textuals) - USD ($)
$ in Millions
7 Months Ended 9 Months Ended
Apr. 01, 2015
Mar. 16, 2015
Jan. 31, 2015
Nov. 01, 2014
Oct. 22, 2014
Mar. 07, 2014
Sep. 30, 2014
Sep. 30, 2015
Business Acquisition [Line Items]                
Business Acquisition, Transaction Costs           $ 51.4    
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares         1,000,000.0 115,495,669    
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable         $ 31.2      
Chevron Acquisition [Member]                
Business Acquisition [Line Items]                
Business Acquisition, Transaction Costs               $ 0.6
Consideration Transferred       $ 231.5        
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual               24.2
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual               2.2
Business Acquisition, Percentage of Voting Interests Acquired       100.00%        
Finite-Lived Intangible Asset, Useful Life       20 years        
LPC [Member]                
Business Acquisition [Line Items]                
Business Acquisition, Transaction Costs               0.2
Consideration Transferred     $ 108.1          
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual               853.3
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual               1.2
Business Acquisition, Percentage of Voting Interests Acquired     100.00%          
Finite-Lived Intangible Asset, Useful Life     10 years          
Business Combination, Consideration Transferred, Other     $ 87.0          
Coronado [Member]                
Business Acquisition [Line Items]                
Business Acquisition, Transaction Costs               3.1
Consideration Transferred   $ 600.2            
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual               126.0
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual               $ (7.7)
Payments to Acquire Businesses, Gross   $ 240.2            
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares   6,704,285            
Business Acquisition, Percentage of Voting Interests Acquired   100.00%            
Finite-Lived Intangible Asset, Useful Life   10 years            
Business Combination, Consideration Transferred, Other   $ 238.8            
VEX Pipeline [Member]                
Business Acquisition [Line Items]                
Payments to Acquire Businesses, Gross $ 171.0              
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares 338,159              
Business Acquisition, Percentage of Voting Interests Acquired 100.00%              
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned $ 9.0              
Capitalized Costs, Support Equipment and Facilities 40.0              
Business Combination, Historical Cost of Entity Under Common Control 131.0              
Distribution To Parent For Asset Drop $ 40.0              
Crosstex Energy Inc. [Domain] [Domain]                
Business Acquisition [Line Items]                
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual             $ 1,669.0  
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual             $ (45.7)  
Common Class C [Member] | Coronado [Member]                
Business Acquisition [Line Items]                
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares   6,704,285            
Enlink Midstream, Inc.                
Business Acquisition [Line Items]                
Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest               5.30%
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest               0.50%
Enlink midstream, LLC [Member]                
Business Acquisition [Line Items]                
Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest           50.00%    
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest               100.00%
EnLink Midstream Partners, LP                
Business Acquisition [Line Items]                
Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest           50.00%    
Business Acquisition, Percentage of Voting Interests Acquired           50.00%    
Class D Common Unit [Member] | EnLink Midstream LP [Member] | Acacia [Member] | EMH Drop Down [Member] | Affiliated Entity [Member] | Midstream Holdings [Member] | EnLink Midstream Holdings, LP [Member]                
Business Acquisition [Line Items]                
Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest               9.60%
Midstream Holdings [Member] | Enlink midstream, LLC [Member] | Acacia [Member]                
Business Acquisition [Line Items]                
Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest               50.00%
Gulf Coast Fractionators [Member]                
Business Acquisition [Line Items]                
Ownership Percentage               38.75%