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Unconsolidated Affiliate Companies (Tables)
12 Months Ended
Dec. 31, 2013
Equity Method Investments and Joint Ventures [Abstract]  
Summary of financial information for joint ventures
The tables below present summarized financial information for joint ventures:
            
(in millions)
2013
Current assets
$
39.1

Non-current assets
5.7

Current liabilities
31.7

Non-current liabilities

            
(in millions)
2013
Revenues
$
67.9

Gross profit
45.0

Income from operations
10.9

Net income
8.9