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Equity (Tables)
 12 Months Ended
Dec. 31, 2013
Equity  
Schedule of accumulated other comprehensive loss
 
   Foreign Currency
Translation Gain		   Unrealized (Loss)
Gain on
Investments,
Net of Tax		   Pension and
Postretirement
Benefit
Adjustments,
Net of Tax		   Accumulated
Other
Comprehensive
Loss		  
 
   (in millions)
  

Balance as of December 31, 2012

   $ 21.0   $ (0.2 ) $ (22.3 ) $ (1.5 )

Current-year change

     (17.8 )   0.4     12.2     (5.2 )
                   
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Balance as of December 31, 2013

   $ 3.2   $ 0.2   $ (10.1 ) $ (6.7 )
                   
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