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Discontinued Operations (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Disposal Group, Including Discontinued Operation, Revenue $ 0.0 $ 0.0 $ 0.0 $ 0.0  
Liabilities of discontinued operations:          
Disposal Group, Including Discontinued Operation, Other Expense 0.0 (0.9) 0.0 (0.9)  
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax 0.0 (0.9) 0.0 (0.9)  
Discontinued Operation, Tax Effect of Discontinued Operation 0.0 (0.2) 0.0 (0.2)  
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent 0.0 $ 1.1 0.0 $ 1.1  
Discontinued Operations, Disposed of by Sale [Member]          
Assets of discontinued operations:          
Current assets 1.1   1.1   $ 1.1
Other assets 2.6   2.6   2.6
Liabilities of discontinued operations:          
Current liabilities $ 0.1   $ 0.1   $ 0.2