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Statutory U.S. Federal Income Tax Rate Reconcilation to Effective Income Tax Rates (Detail)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Income Tax Disclosure [Abstract]      
Statutory U.S. federal income tax rate 35.00% 35.00% 35.00%
State income taxes, net of related federal income tax benefit 1.60% 1.60% 1.30%
Foreign income taxed at different rates (4.90%) (4.80%) (5.10%)
Taxes related to unfavorable lower tax court ruling and audit progression in foreign tax jurisdictions 0.00% 4.10% 0.00%
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Percent (2.30%) (1.20%) (0.50%)
Other, net 1.50% 0.80% 1.20%
Effective income tax rates 30.90% 35.50% 31.90%