v3.6.0.2
Provision for Income Taxes - Reconciliation of Statutory Income Tax Rate (Detail)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Income Tax Disclosure [Abstract]      
Statutory income tax in the Netherlands 25.00% 25.00% 25.00%
Rate differential local statutory rates versus statutory rate of the Netherlands 24.20% (4.30%) (2.50%)
Net change in valuation allowance 72.60% (13.80%) 2.40%
Prior year adjustments 0.10%   0.50%
Non-taxable income 1.70% (0.10%) (0.30%)
Non-deductible expenses/losses (7.00%) 4.00% 5.60%
Sale of non-deductible goodwill   2.70%  
Other taxes and tax rate changes 7.10% 1.00%  
Tax effects of remitted and unremitted earnings and withholding taxes (2.70%) 0.10% 1.30%
Tax on gains related to internal corporate reorganization transactions (10.30%)    
Unrecognized tax benefits (0.50%) 0.10% 0.60%
Netherlands tax incentives 17.90% (18.50%) (21.50%)
Foreign tax incentives 13.00% (3.20%) (4.80%)
Effective tax rate 141.10% (7.00%) 6.30%