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Discontinued Operations Discontinued Operations Table (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Total revenue $ 54.5us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue $ 155.7us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue
Operating loss $ (81.0)us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss [1] $ (210.2)us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss
[1] Operating loss for the year ended December 31, 2013 includes a charge of $79.0 before tax recorded in the second quarter of 2013, reflecting the expected loss on sale at that time, as well as an additional loss on sale of $.4 before tax recorded in the third quarter of 2013. Operating loss for the year ended December 31, 2012 includes an impairment charge of $209.0 before tax recorded in the fourth quarter of 2012, as discussed further below.