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Investments in Unconsolidated Affiliates (Tables)
 12 Months Ended
Dec. 31, 2017
Equity Method Investments and Joint Ventures [Abstract]  
Activity Related to Investments in Unconsolidated Affiliates
The following table shows the activity related to our investment in unconsolidated affiliates for the periods indicated (in millions):
 
 
Year Ended December 31,
 
 
2017
 
2016
 
2015
Gulf Coast Fractionators
 
 
 
 
 
 
Contributions
 
$
—

 
$
—

 
$
—

Distributions
 
$
12.7

 
$
7.5

 
$
14.5

Equity in income
 
$
12.6

 
$
3.4

 
$
13.0

 
 
 
 
 
 
 
Howard Energy Partners
 
 
 
 
 
 
Contributions (1)
 
$
—

 
$
45.0

 
$
25.8

Distributions (2)
 
$
—

 
$
50.2

 
$
28.2

Equity in income (loss) (3)
 
$
(3.4
)
 
$
(23.3
)
 
$
7.4

 
 
 
 
 
 
 
Cedar Cove JV
 
 
 
 
 
 
Contributions
 
$
12.6

 
$
28.8

 
$
—

Distributions
 
$
0.8

 
$
—

 
$
—

Equity in income
 
$
0.4

 
$
—

 
$
—

 
 
 
 
 
 
 
Total
 
 
 
 
 
 
Contributions (1)
 
$
12.6

 
$
73.8

 
$
25.8

Distributions (2)
 
$
13.5

 
$
57.7

 
$
42.7

Equity in income (loss) (3)
 
$
9.6

 
$
(19.9
)
 
$
20.4

(1)
Contributions for the year ended December 31, 2016 included $32.7 million of contributions to HEP for preferred units issued by HEP. These preferred units were redeemed during the third quarter 2016.
(2)
Distributions for the year ended December 31, 2016 included a redemption of $32.7 million of preferred units issued by HEP.
(3)
Included losses of $3.4 million and $20.1 million for the years ended December 31, 2017 and 2016, respectively, related to the sale of our HEP interests.

The following table shows the balances related to our investment in unconsolidated affiliates as of December 31, 2017 and 2016 (in millions):
 
December 31, 2017
 
December 31, 2016
Gulf Coast Fractionators
$
48.4

 
$
48.5

Howard Energy Partners (1)
—

 
193.1

Cedar Cove JV
41.0

 
28.8

Total investments in unconsolidated affiliates
$
89.4

 
$
270.4

(1)
Due to the completion of the sale of our investment in HEP in the first quarter of 2017, the HEP investment balance was classified as “Investment in unconsolidated affiliates—current” on the consolidated balance sheet as of December 31, 2016.