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Income Taxes - Additional Information (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Income Taxes [Line Items]        
Reconciliation of income taxes 35.00%      
Valuation allowances related to state net operating loss carryforwards   $ 4.1    
Increase in effective foreign tax rate 6.00%      
Effective income tax rate impact related to nondeductible acquisition costs $ 2.4      
Unrecognized tax benefits that would impact effective tax rate 27.8      
Unrecognized tax expense (benefits), interest and penalty expense (benefit) recognized 1.0 0.5 $ (0.2)  
Unrecognized tax benefits, accrued interest and penalties 10.2 10.7    
Deferred tax assets, net operating losses and other tax carryforwards 39.9 $ 15.8    
Deferred tax assets, net operating losses and other tax carryforwards 10.1      
Undistributed earnings of foreign subsidiaries 270.1      
Tax liability associated with remittance of certain foreign earnings 1.4     $ 12.4
Minimum [Member]        
Income Taxes [Line Items]        
Reasonably possible decrease in unrecognized tax benefits $ 7.5      
Deferred tax assets, remaining net operating losses and other tax carryforwards expiration period 2021      
Maximum [Member]        
Income Taxes [Line Items]        
Reasonably possible decrease in unrecognized tax benefits $ 12.5