Income Taxes - Deferred Tax Assets and Liabilities (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Deferred Tax Assets:
Accruals	$ 69.0	$ 64.5
Asbestos	272.6itt_DeferredTaxAssetsAsbestos	272.7itt_DeferredTaxAssetsAsbestos
Employee benefits	109.4	106.6
Credit carryforwards	29.3	47.2
Loss carryforwards	128.0	125.2
Other	36.0us-gaap_DeferredTaxAssetsOther	34.4us-gaap_DeferredTaxAssetsOther
Gross deferred tax assets	644.3us-gaap_DeferredTaxAssetsGross	650.6us-gaap_DeferredTaxAssetsGross
Less: Valuation allowance	147.1	135.3	536.7	480.4
Net deferred tax assets	497.2us-gaap_DeferredTaxAssetsNet	515.3us-gaap_DeferredTaxAssetsNet
Deferred Tax Liabilities:
Undistributed earnings	(61.2)	(82.3)
Intangibles	(58.7)	(58.8)
Accelerated depreciation	(26.0)	(25.8)
Investment	(0.4)itt_DeferredTaxLiabilitiesInvestment	(0.4)itt_DeferredTaxLiabilitiesInvestment
Total deferred tax liabilities	(146.3)us-gaap_DeferredTaxLiabilities	(167.3)us-gaap_DeferredTaxLiabilities
Net deferred tax assets	$ 350.9us-gaap_DeferredTaxAssetsLiabilitiesNet	$ 348.0us-gaap_DeferredTaxAssetsLiabilitiesNet

Deferred Tax Assets, Asbestos

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Deferred tax liabilities investments.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences not separately disclosed.

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The tax effect as of the balance sheet date of the amount of future tax deductions arising from all unused tax credit carryforwards which have been reduced by a valuation allowance.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from compensation and benefits costs.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from reserves and accruals.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Amount of deferred tax liability attributable to taxable temporary differences net of deferred tax asset attributable to deductible temporary differences and carryforwards after valuation allowances.

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Amount of deferred tax liability attributable to taxable temporary differences from intangible assets other than goodwill.

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Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment.

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Amount of deferred tax liability attributable to taxable temporary differences from undistributed earnings of subsidiaries and other recognized entities not within the country of domicile of the entity.

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