v3.10.0.1
Income Taxes - Reconciliation of Statutory Income Tax Rate (Detail)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
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 0.80% (4.50%) 24.20%
Net change in valuation allowance 0.40% 1.10% 72.60%
Non-deductible expenses/losses 2.70% 2.20% (7.00%)
Sale of non-deductible goodwill 0.00% 3.80% 0.00%
The U.S. Tax Cuts and Jobs Act (0.10%) [1] (42.30%) 0.00%
Tax on gains related to internal corporate reorganization transaction 0.00% 0.00% (10.30%)
Netherlands tax incentives (10.60%) (7.50%) 17.90%
Foreign tax incentives (3.70%) (4.70%) 13.00%
Adjustments of prior years' income taxes (3.50%) (0.30%) 0.10%
Other differences (3.60%) (0.60%) 5.60%
Effective tax rate 7.40% (27.80%) 141.10%
[1] This is only relating to the 2017 income tax provision.