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Income Taxes - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Income Taxes [Line Items]        
Reconciliation of income taxes 35.00%      
Net effect of rate changes on deferred taxes $ (3.0) $ (0.2) $ (2.9)  
Unrecognized tax benefits that would impact effective tax rate 23.4      
Reasonably possible decrease in unrecognized tax benefits, minimum (2.5)      
Reasonably possible decrease in unrecognized tax benefits, maximum (3.5)      
Unrecognized tax benefits, interest and penalty benefit recognized 0.2 1.7 1.4  
Unrecognized tax benefits, accrued interest and penalties 9.9 10.2    
Deferred tax assets, net operating losses and other tax carryforwards 25.5 32.7    
Undistributed earnings of foreign subsidiaries 156.1      
Tax liability associated with remittance of certain foreign earnings   12.4   9.1
Expire In Twenty Thirteen Through Twenty Nineteen
        
Income Taxes [Line Items]        
Deferred tax assets, net operating losses and other tax carryforwards $ 1.4 $ 1.4    
Minimum
        
Income Taxes [Line Items]        
Deferred tax assets, remaining net operating losses and other tax carryforwards expiration period 2020