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v2.4.1.9

Income Taxes - Reconciliation of Tax Provision for Continuing Operations (Detail) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Income Tax Disclosure [Abstract] |  |  |
Tax provision at U.S. statutory rate | 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate | 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate | 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Valuation allowance on deferred tax assets | 8.60%us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance | (191.10%)us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance | 27.70%us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
Tax exempt interest | (10.30%)itt_EffectiveIncomeTaxRateReconciliationTaxBenefitFromForeignPermanentItems | (17.50%)itt_EffectiveIncomeTaxRateReconciliationTaxBenefitFromForeignPermanentItems | (19.70%)itt_EffectiveIncomeTaxRateReconciliationTaxBenefitFromForeignPermanentItems
Tax on undistributed foreign earnings | (8.10%)itt_EffectiveIncomeTaxRateReconciliationTaxOnUndistributedOfForeignEarnings | 6.10%itt_EffectiveIncomeTaxRateReconciliationTaxOnUndistributedOfForeignEarnings | 1.30%itt_EffectiveIncomeTaxRateReconciliationTaxOnUndistributedOfForeignEarnings
Foreign tax rate differential | (6.20%)us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential | (4.80%)us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential | (3.00%)us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential
Audit settlements & unrecognized tax benefits | 0.90%us-gaap_EffectiveIncomeTaxRateReconciliationTaxSettlements | 3.80%us-gaap_EffectiveIncomeTaxRateReconciliationTaxSettlements | (13.20%)us-gaap_EffectiveIncomeTaxRateReconciliationTaxSettlements
U.S. permanent items | (1.00%)itt_EffectiveIncomeTaxRateOnPermanentItems | (1.30%)itt_EffectiveIncomeTaxRateOnPermanentItems | 0.50%itt_EffectiveIncomeTaxRateOnPermanentItems
U.S. tax on foreign earnings | 9.30%itt_EffectiveIncomeTaxRateReconciliationTaxOnForeignEarnings | (0.70%)itt_EffectiveIncomeTaxRateReconciliationTaxOnForeignEarnings | 0.50%itt_EffectiveIncomeTaxRateReconciliationTaxOnForeignEarnings
Other adjustments | (1.30%)us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments | (0.60%)us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments | (3.90%)us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments
Effective Income Tax Rate Reconciliation, Tax Holiday, Amount | (1.30%)us-gaap_EffectiveIncomeTaxRateReconciliationDeductions | (1.00%)us-gaap_EffectiveIncomeTaxRateReconciliationDeductions | 0.00%us-gaap_EffectiveIncomeTaxRateReconciliationDeductions
State and local income tax | 1.60%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes | 0.60%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes | 1.40%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
Effective income tax rate | 27.20%us-gaap_EffectiveIncomeTaxRateContinuingOperations | (171.50%)us-gaap_EffectiveIncomeTaxRateContinuingOperations | 26.60%us-gaap_EffectiveIncomeTaxRateContinuingOperations

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- Definition Effective Income Tax Rate Reconciliation Tax Benefit From Foreign Permanent Items + References No definition available. + Details
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- Definition Effective Income Tax Rate Reconciliation Tax on Foreign Earnings + References No definition available. + Details
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- Definition Effective income tax rate reconciliation tax on undistributed of foreign earnings. + References No definition available. + Details
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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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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + 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 S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 3: 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 + Details
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- Definition Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets. + 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 S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 3: 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 + Details
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- Definition Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to deductions. Including, but not limited to, extraterritorial income exclusion deduction, qualified production activity deduction, dividend deduction, deduction for dividend paid to employee stock ownership plan, Medicare prescription drug benefit subsidy deduction, and other deductions. + 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 S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 3: 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 + Details
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