Income Taxes - Summary of Income Taxes Reconciled with Federal Statutory Rate (Detail)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Federal income tax rate	35.00%	35.00%	35.00%
State income taxes, net of federal tax benefit	2.10%	(0.50%)	0.70%
Foreign earnings taxed at different rates	15.50%	0.50%	1.40%
Domestic production activities deduction	(2.00%)	(2.70%)	(1.30%)
Non-deductible fines and penalties	0.00%	0.00%	0.20%
Deferred tax adjustments	(0.20%)	(0.30%)	0.10%
Change in tax contingency reserves	(1.50%)	1.20%	3.80%
Foreign tax credits	(1.10%)	(0.60%)	0.00%
Other	0.00%	0.50%	0.30%
Total effective tax rate	47.80%	33.10%	40.20%