Income Taxes - Reconciliation Between U.S. Federal Income Tax Rate and Effective Tax Rate (Detail)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
U.S. federal income tax rate	35.00%	35.00%	35.00%
Effective Income Tax Rate Reconciliation, Deduction, U.S. Tax Reform	66.60%	0.00%	0.00%
Effective Income Tax Rate Reconciliation, Deduction, Employee Share-Based Payments	(28.00%)	0.00%	0.00%
Taxes on non-U.S. income	(24.60%)	(2.50%)	(2.10%)
Manufacturing deduction	(15.30%)	(1.30%)	(1.60%)
(Benefit) taxes on non-U.S. income - European reorganization	(8.40%)	4.30%	6.90%
State income taxes—U.S.	(6.20%)	1.80%	1.30%
Research and development credit	(4.70%)	(0.60%)	(1.10%)
Valuation allowances	(3.30%)	1.50%	1.70%
Other	(1.60%)	(0.10%)	(0.10%)
Effective income tax rate	9.50%	38.10%	40.00%