2.2.0.7 false Reconciliation of Income Taxes at the U.S. Statutory Federal Rate as compared to the Income Tax Expense recorded in our Consolidated Statements of Income (Detail) 146 - Disclosure - Reconciliation of Income Taxes at the U.S. Statutory Federal Rate as compared to the Income Tax Expense recorded in our Consolidated Statements of Income (Detail) true false false false 1 USD false false iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 iso4217_USD_per_shares Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares 0 pure Standard http://www.xbrl.org/2003/instance pure 0 shares Standard http://www.xbrl.org/2003/instance shares 0 $ false 2 USD false false iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 shares Standard http://www.xbrl.org/2003/instance shares 0 iso4217_USD_per_shares Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares 0 pure Standard http://www.xbrl.org/2003/instance pure 0 $ 5 U.S. statutory rate 3 us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate us-gaap true na duration No definition available. false false false false false false false false false false false false 1 false true false false 0.350 0.350 false false false 2 false true false false 0.350 0.350 false false false us-types:percentItemType pure The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate shall be the regular tax rate if there are alternative tax systems. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 47 false 6 Increases (reductions) resulting from: 3 us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 7 Legislative changes 4 us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate us-gaap true na duration No definition available. false false false false false false false false false false false false 1 false true false false 0.012 0.012 false false false 2 false true false false 0.004 0.004 false false false us-types:percentItemType pure The portion of the difference between total income tax expense (benefit) as reported in the Income Statement and the expected income tax expense (benefit) that is attributable to changes in the income tax laws or rates. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 45 -Subparagraph g false 8 State taxes, net of federal benefit 4 us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes us-gaap true na duration No definition available. false false false false false false false false false false false false 1 false true false false 0.045 0.045 false false false 2 false true false false 0.035 0.035 false false false us-types:percentItemType pure The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate that can be explained by the state and local income tax expense (benefit), net of the federal tax benefit (expense) thereon, recorded during the period. No authoritative reference available. false 9 Domestic production activities deduction 4 us-gaap_EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities us-gaap true na duration No definition available. false false false false false false false false false false false false 1 false true false false -0.004 -0.004 false false false 2 false true false false -0.007 -0.007 false false false us-types:percentItemType pure The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to the deduction for qualified production activities received under enacted tax laws. No authoritative reference available. false 10 Non-deductible goodwill 4 us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOther us-gaap true na duration No definition available. false false false false false false false false false false false false 1 false true false false 0.009 0.009 false false false 2 false false false false 0 0 false false false us-types:percentItemType pure The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to nondeductible expenses under enacted tax laws, or differences in the methodologies used to determine expense amounts for financial statements prepared in accordance with generally accepted accounting principles, not otherwise listed in the existing taxonomy. No authoritative reference available. false 11 Other, net 4 us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments us-gaap true na duration No definition available. false false false false false false false false false false false false 1 false true false false -0.009 -0.009 false false false 2 false true false false -0.021 -0.021 false false false us-types:percentItemType pure The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to all other items not otherwise listed in the existing taxonomy. No authoritative reference available. false 12 Effective tax rate 4 us-gaap_EffectiveIncomeTaxRateContinuingOperations us-gaap true na duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 0.403 0.403 false false false 2 false true false false 0.361 0.361 false false false us-types:percentItemType pure A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 47 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Subparagraph 2 -Article 4 true 2 8 false UnKnown UnKnown UnKnown false true