XML 42 R35.htm IDEA: XBRL DOCUMENT v2.4.0.8
Equity Method Investments (Details) (USD $)
In Millions, unless otherwise specified
9 Months Ended
Sep. 30, 2014
Feb. 28, 2014
Equity Method Investment    
Contributions made to equity method investments $ 28.8  
Ownership interest (as a percent)   20.00%
Amount of investment, new pipeline   149
Minimum
   
Equity Method Investment    
Number of years of investment expected, new pipeline to occur 3 years  
Maximum
   
Equity Method Investment    
Number of years of investment expected, new pipeline to occur 4 years  
Central Pipeline
   
Equity Method Investment    
Length of pipeline to be constructed (in miles) 177  
Central Pipeline | Transco
   
Equity Method Investment    
Proportionate ownership interest, new pipeline (as a percent)   61.00%
Constitution Pipeline Company, LLC [Member]
   
Equity Method Investment    
Contributions made to equity method investments 26.6  
Meade Pipeline Co LLC
   
Equity Method Investment    
Contributions made to equity method investments $ 2.2  
Meade Pipeline Co LLC | Central Pipeline
   
Equity Method Investment    
Proportionate ownership interest, new pipeline (as a percent)   39.00%