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Income Taxes - Reconciliation of Effective Tax Rate on Income or Loss and Statutory Tax Rate (Detail)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Income Tax Disclosure [Abstract]      
Statutory U.S. tax rate 35.00% 35.00% 35.00%
State income taxes, net of U.S. tax benefit 0.90% (0.80%) (0.80%)
Federal and State tax credits, net of U.S. tax benefit 22.60% 0.00% 0.00%
Expenses with no tax benefit (15.30%) (0.90%) 0.20%
Foreign income taxed at other than U.S. statutory rate (5.10%) 2.00% (1.00%)
Effect of foreign rate changes (4.20%) 0.00% (0.50%)
Foreign tax credit 9.40% (1.20%) 0.00%
Basis differences of intangibles with an indefinite life (4.10%) 1.30% (1.00%)
Release of prepaid taxes on intercompany profit 0.00% 0.00% (24.00%)
Change in deferred tax valuation allowance (76.80%) (37.70%) (98.60%)
Reversal of previously accrued taxes 0.00% 0.10% 0.00%
Accrual for interest and income taxes related to uncertain tax positions (0.10%) 0.80% (0.60%)
Other (4.30%) (2.80%) 0.90%
Effective tax rate (42.00%) (4.20%) (90.40%)