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Basis of Presentation (Details 4) (USD $)
In Millions, unless otherwise specified
9 Months Ended 1 Months Ended
Sep. 30, 2012
Jan. 31, 2012
S&P Clever
Mar. 31, 2012
CarbonWrap Solutions, L.L.C
Acquisitions      
Purchase price   $ 58.1 $ 5.5
Cash paid for acquisition   57.5 5.3
Contingent consideration payable   0.6 0.2
Maximum period for payment of contingent consideration   3 years  
Cash and cash equivalent   6.8  
Other current assets   9.9  
Non-current assets   54.2  
Current liabilities   12.6  
Non-current liabilities   0.2  
Goodwill   26.1 3.6
Intangible assets   $ 15.0 $ 1.6
Maximum period for payment for adjustments to provisional fair value measurements 1 year