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Debt - Additional Information (Detail) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($)
Debt Instrument [Line Items] |  |
Commercial Paper | $ 162,400,000 | $ 113,500,000
Short-term loans | 0 | $ 100,000,000.0
ITT 2014 Revolving Credit Agreement [Member] |  |
Debt Instrument [Line Items] |  |
Revolving credit facility | 500,000,000 |
Maximum face amount outstanding on letters of credit | 100,000,000 |
Minimum amount of reduce commitments | 10,000,000 |
Maximum potential increase in credit facility | 200,000,000 |
Maximum potential credit facility outstanding | $ 700,000,000 |
Maximum Leverage Ratio Under Credit Facility | 3.00 |
Minimum leverage ratio under credit facility | 1.00 |
Maximum interest coverage ratio under credit facility | 3.00 |
Minimum interest coverage ratio under credit facility | 1.00 |
Commercial Paper [Member] |  |
Debt Instrument [Line Items] |  |
Short-term Debt, Weighted Average Interest Rate, at Point in Time | 2.09% | 1.14%
Revolving Credit Facility [Member] |  |
Debt Instrument [Line Items] |  |
Short-term Debt, Weighted Average Interest Rate, at Point in Time |  | 1.87%

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- Definition Maximum face amount outstanding on letters of credit. + References No definition available. + Details
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- Definition Maximum interest coverage ratio under credit facility. + References No definition available. + Details
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- Definition Maximum leverage ratio under credit facility. + References No definition available. + Details
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- Definition Maximum potential credit facility outstanding. + References No definition available. + Details
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- Definition Maximum potential increase in credit facility + References No definition available. + Details
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- Definition Minimum amount of reduce commitments. + References No definition available. + Details
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- Definition Minimum interest coverage ratio under credit facility. + References No definition available. + Details
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- Definition Minimum leverage ratio under credit facility. + References No definition available. + Details
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- Definition Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)(a)(3)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(13)(2)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of borrowings classified as other, maturing within one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(a)(7)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Weighted average interest rate of short-term debt outstanding calculated at point in time. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Details
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- Details
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