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Contingencies - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2007
Location
Commitments and Contingencies Disclosure [Line Items]      
Number of countries in which business were sold     18
Other long-term liabilities $ 1,612.6 $ 1,586.9  
Accrued payroll and other liabilities 1,362.8 1,384.9  
Indemnification Agreement
     
Commitments and Contingencies Disclosure [Line Items]      
Other long-term liabilities 49.4 49.6  
Accrued payroll and other liabilities $ 21.2 $ 28.4