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v2.4.1.9

Schedule of Reconciliation of Effective Tax Rate (Detail) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Income Tax Disclosure [Line Items] |  |  |
U.S. statutory federal tax rate | 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate | 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate | 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Foreign taxes | (58.10%)us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential | (11.40%)us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential | (10.50%)us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential
Goodwill impairment | 36.30%us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLosses |  |
U.S. research and development credit | (7.90%)us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch | (7.20%)us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch |
Uncertain tax positions | 7.90%us-gaap_EffectiveIncomeTaxRateReconciliationTaxContingencies | 4.20%us-gaap_EffectiveIncomeTaxRateReconciliationTaxContingencies | (1.20%)us-gaap_EffectiveIncomeTaxRateReconciliationTaxContingencies
Other permanent items | 3.40%us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOther | (0.10%)us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOther | (2.80%)us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOther
Valuation allowance |  | 0.40%us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance | (0.50%)us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
State income taxes, net of federal tax benefit | (0.10%)us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes | 0.10%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes | (1.70%)us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
Other, net | (1.70%)us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments | (2.70%)us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments | 0.10%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments
Effective tax rate, Total | 14.80%us-gaap_EffectiveIncomeTaxRateContinuingOperations | 18.30%us-gaap_EffectiveIncomeTaxRateContinuingOperations | 18.40%us-gaap_EffectiveIncomeTaxRateContinuingOperations

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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Subparagraph 2 -Article 4 + Details
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