Number of persons employed by the Entity

No definition available.

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Namespace Prefix:	dei_
Data Type:	xbrli:decimalItemType
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Period Type:	instant

- Definition

Represents the amount we have borrowed against our Revolving Credit Facility

+ References

No definition available.

+ Details

Name:	itt_BorrowingsAgainstRevolvingCreditFacility
Namespace Prefix:	itt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Sales to ITT Corp.

+ References

No definition available.

+ Details

Name:	itt_SalestoITTCorp.
Namespace Prefix:	itt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Total revenue reported by the acquired entity for its previous full fiscal year before the business acquisition.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3213-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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- Details

Name:	us-gaap_BusinessAcquisitionAxis=itt_WolverineAdvancedMaterialsAcquisitionMember
Namespace Prefix:
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Balance Type:
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- Details

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SUBSEQUENT EVENTS Subsequent Events (Details) $ in Millions		9 Months Ended		12 Months Ended
SUBSEQUENT EVENTS Subsequent Events (Details) $ in Millions	Oct. 05, 2015 USD ($) Employees	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Dec. 31, 2014 USD ($)
Subsequent Event [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired		$ 53.5	$ 2.8
Wolverine Advanced Materials Acquisition [Member]
Subsequent Event [Line Items]
Business Acquisition, Revenue Reported by Acquired Entity for Last Annual Period				$ 154.0
Sales to ITT Corp.				$ 17.0
Subsequent Event [Member] \| Wolverine Advanced Materials Acquisition [Member]
Subsequent Event [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	$ 300.0
Borrowings Against Revolving Credit Facility	$ 200.0
Entity Number of Employees \| Employees	500