COMMITMENTS AND CONTINGENCIES Asbestos Matters Textuals (Details) Claim in Thousands, $ in Millions	3 Months Ended
Mar. 31, 2018 USD ($) Claim	Mar. 31, 2017 USD ($)	Dec. 31, 2017 USD ($) Claim	Dec. 31, 2016 USD ($)
Asbestos Related Contingencies [Line Items]
Asbestos Liability Measurement Periods for Claims Pending and Estimated to be Filed	10 years
Asbestos Related Costs, Provision to Maintain 10-Year Forecast Period	$ 12.4	$ 14.9
Gain From Asbestos Insurance Settlement Agreement	32.1	0.0
Asbestos Liability And Related Assets Net Current And Noncurrent	$ 476.0	575.6	$ 508.5	$ 573.7
Asbestos Issue [Member]
Asbestos Related Contingencies [Line Items]
Pending Asbestos Claims \| Claim	25		26
Liability [Member]
Asbestos Related Contingencies [Line Items]
Asbestos Related Costs, Provision to Maintain 10-Year Forecast Period	$ 15.3	17.4
Gain From Asbestos Insurance Settlement Agreement	0.0	0.0
Asbestos Liability And Related Assets Net Current And Noncurrent	870.3	942.9	$ 877.2	954.3
Assets [Member]
Asbestos Related Contingencies [Line Items]
Asbestos Related Costs, Provision to Maintain 10-Year Forecast Period	(2.9)	(2.5)
Gain From Asbestos Insurance Settlement Agreement	32.1	0.0
Asbestos Liability And Related Assets Net Current And Noncurrent	$ (394.3)	$ (367.3)	$ (368.7)	$ (380.6)

Asbestos Liability and Related Assets Net Current and Noncurrent

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Asbestos Liability Measurement Periods for Claims Pending and Estimated to be Filed

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Asbestos Related Contingencies [Line Items]

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- Definition

In addition to the charges associated with our annual measurement, we record a net asbestos charge each quarter to maintain a rolling 10-year forecast period.

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During 2013, ITT executed a final settlement agreement (the 2013 Settlement) with an insurer to settle responsibility for multiple categories of insured claims, including pending and future product liability claims. Under the terms of the 2013 Settlement, the insurer agreed to a specified series of payments over the course of the next five years, resulting in a one-time benefit of $31.0.

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Number of pending claims pertaining to a loss contingency.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14435-108349

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