Income Taxes - Reconciliation of Income Tax Expense Computed at Statutory Tax Rates Compared to Effective Tax Rates (Detail)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Statutory rate	35.00%	35.00%	35.00%
Federal tax credits	(0.30%)	(1.80%)	(2.80%)
Uncertain tax positions	3.30%	0.40%	2.50%
Foreign rate differential	(4.70%)	(9.00%)	(5.60%)
Foreign deferred tax liability on unremitted earnings	0.50%	8.00%	7.50%
State income taxes, net of Federal benefit	1.90%	2.10%	1.70%
Other	0.40%	0.40%	(0.50%)
Effective income tax rates from continuing operations	36.10%	35.10%	37.80%