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Unconsolidated Affiliate Companies (Tables)
12 Months Ended
Dec. 31, 2014
Equity Method Investments and Joint Ventures [Abstract]  
Summary of Financial Information for Joint Ventures
The tables below present summarized financial information for joint ventures as of and for the years ended December 31:
            
(in millions)
2014
 
2013
Current assets
$
49.7

 
$
39.1

Non-current assets
5.1

 
5.7

Current liabilities
29.7

 
31.7

Equity
25.1

 
13.1

            
(in millions)
2014
 
2013
Revenues
$
99.2

 
$
67.9

Gross profit
62.1

 
45.0

Income from operations
16.8

 
10.9

Net income
13.1

 
8.9