Equity Method Investments (Tables)
3 Months Ended
Mar. 31, 2016
Equity Method Investments [Abstract]  
Equity Method Investments
The following table contains contribution and distribution data representing the Partnership's portion based on the Partnership's ownership percentage of each investment:
 
Three Months Ended
March 31,
(in millions)
2016
 
2015
Millennium Pipeline
 
 
 
Contributions to Millennium Pipeline
$
1.9

 
$

Distributions of earnings from Millennium Pipeline
15.2

 
16.6

Hardy Storage
 
 
 
Contributions to Hardy Storage

 

Distributions of earnings from Hardy Storage
0.7

 
0.5

Pennant
 
 
 
Contributions to Pennant

 

Distributions of earnings from Pennant
3.0

 
1.2

Return of capital from Pennant
0.2

 
1.3