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Income Taxes - Additional Information (Detail)
€ in Millions, $ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2015
USD ($)
Mar. 31, 2015
USD ($)
Jun. 30, 2014
Jun. 30, 2015
EUR (€)
Jun. 30, 2015
USD ($)
Jun. 30, 2014
Dec. 31, 2014
EUR (€)
Dec. 31, 2014
USD ($)
Income Taxes [Line Items]                
Settlements       € 4.5 $ 4.9      
Effective tax rate       20.40% 20.40% 25.00%    
Tax settlement   $ 10.5            
Spanish tax settlement [Member]                
Income Taxes [Line Items]                
Effective tax rate 23.10%   24.60%          
Foreign Tax Authority [Member]                
Income Taxes [Line Items]                
Provision for uncertain tax positions $ 15.7       $ 15.7      
Reversal of reserve due to settlement with taxing authority             € 1.9 $ 2.3
2007-2012 [Member] | Minimum [Member]                
Income Taxes [Line Items]                
Income tax examination, years under examination       2005 2005      
2007-2012 [Member] | Maximum [Member]                
Income Taxes [Line Items]                
Income tax examination, years under examination       2014 2014      
Other Liabilities [Member]                
Income Taxes [Line Items]                
Unrecognized tax benefits that would impact effective tax rate 15.0       $ 15.0      
Accrued interest and penalties $ 0.7       $ 0.7