Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Additional Information (Detail)

v3.2.0.727
Income Taxes - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Dec. 31, 2013
Schedule Of Income Taxes [Line Items]            
Effective tax rate 22.60% 24.20% 23.00% 24.90%    
U.S. federal and state statutory rate 39.00%   39.00%      
Cash and cash equivalents $ 513,902 $ 414,808 $ 513,902 $ 414,808 $ 466,685 $ 372,011
Repatriation of earnings     82,900      
Non-US [Member]            
Schedule Of Income Taxes [Line Items]            
Cash and cash equivalents $ 233,600   $ 233,600      
Non-US [Member] | GeographicConcentrationRisk[Member]            
Schedule Of Income Taxes [Line Items]            
Percentage of cash and cash equivalents     45.40%      
Minimum [Member]            
Schedule Of Income Taxes [Line Items]            
Effective tax rate     21.00%      
Minimum [Member] | Non-U.S jurisdictions [Member]            
Schedule Of Income Taxes [Line Items]            
Statutory federal rate     0.00%      
Maximum [Member]            
Schedule Of Income Taxes [Line Items]            
Effective tax rate     25.00%      
Maximum [Member] | Non-U.S jurisdictions [Member]            
Schedule Of Income Taxes [Line Items]            
Statutory federal rate     34.00%