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Derivative Financial Instruments (Tables)
3 Months Ended
Mar. 31, 2013
Derivative Financial Instruments  
Schedule of amount of derivative instrument gains and (losses) before taxes

 

 
  For the Three Months
Ended March 31,
 
Cash Flow Hedges
  2012   2013  

Interest rate swaps

  $ (0.1 ) $ 0.3  
           
Schedule of location and fair values of derivative instruments on the Consolidated Balance Sheet

 

Cash Flow Hedges
  December 31,
2012
  March 31,
2013
 

Interest rate swaps(1)

  $ (4.0 ) $ (3.7 )
           

(1)
Presented within Other long-term liabilities.