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Income Taxes (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended 12 Months Ended
Mar. 31, 2013
Jan. 01, 2012
Jun. 30, 2013
Jan. 01, 2012
Income Tax Contingency [Line Items]        
Unrecognized Tax Benefits Expected To Be Resolved With In A Year, Due to Settlements     $ 2.4  
Unrecognized tax benefits, gross     50.9  
Uncertain tax benefits if recognized that could affect the continuing operations effective tax rate     44.3  
Unrecognized Tax Benefits, Reductions Resulting from Lapse of Applicable Statute of Limitations (9.4)      
Uncertain tax positions including accrued interest, net of tax benefits and penalties, to be resolved within the next year     3.8  
Unrecognized Tax Benefits Expected To Be Resolved With In A Year, Due to Lapse in Statute of Limitations     1.4  
Unremitted Earnings Planned To Be Repatriated       350.0
Increase (decrease) to tax provision in discontinued operations   79.7    
Repatriated Foreign Earnings     350.0  
Open Tax Years by Major Tax Jurisdiction, Begin Date     2005  
Tax Adjustments, Settlements, and Unusual Provisions $ (15.4)