DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION (Policies)	3 Months Ended
	Mar. 31, 2020
Accounting Policies [Abstract]
Description of Business	Description of Business ITT Inc. is a diversified manufacturer of highly engineered critical components and customized technology solutions for the transportation, industrial, and oil and gas markets. Unless the context otherwise indicates, references herein to “ITT,” “the Company,” and such words as “we,” “us,” and “our” include ITT Inc. and its subsidiaries. ITT operates through three segments: Motion Technologies, consisting of friction and shock and vibration equipment; Industrial Process, consisting of industrial flow equipment and services; and Connect & Control Technologies, consisting of electronic connectors, fluid handling, motion control, composite materials and noise and energy absorption products. Financial information for our segments is presented in Note 3, Segment Information. In March 2020, the World Health Organization declared the outbreak of a novel coronavirus (COVID-19) pandemic, which has spread throughout the world. While most of our businesses are deemed essential, we have experienced certain local government-mandated site closures. The Company continues to face certain risks resulting from COVID-19 including disruption of our operations due to decreased customer demand, temporary plant closures, and elevated standards to keep our employees safe, along with increased risk of customer or supplier bankruptcy and potential challenges in accessing capital markets. All of these may have a material adverse impact on the Company. While the disruption is currently expected to be temporary, there is uncertainty around the duration of these impacts. Therefore, while we expect this matter to negatively impact our business, results of operations, and financial position, the extent of certain future impacts cannot be reasonably estimated at this time. Refer to the section titled “Impact of COVID-19 on our Business” within Part I. Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations for additional information.
Basis of Accounting	Basis of Presentation The unaudited consolidated condensed financial statements have been prepared pursuant to the rules and regulations of the SEC and, in the opinion of management, reflect all known adjustments (which consist primarily of normal, recurring accruals, estimates and assumptions) necessary to state fairly the financial position, results of operations, and cash flows for the periods presented. The Consolidated Condensed Balance Sheet as of December 31, 2019, presented herein, has been derived from our audited balance sheet included in our Annual Report on Form 10-K (2019 Annual Report) for the year ended December 31, 2019 but does not include all disclosures required by GAAP. We consistently applied the accounting policies described in the 2019 Annual Report in preparing these unaudited financial statements, other than those related to new accounting standards adopted during the period. Refer to Note 2, Recent Accounting Pronouncements for further information. These financial statements should be read in conjunction with the financial statements and notes thereto included in our 2019 Annual Report. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenue and expenses during the reporting period. Estimates are revised as additional information becomes available. Estimates and assumptions are used for, but not limited to, asbestos-related liabilities and recoveries from insurers, revenue recognition, unrecognized tax benefits, deferred tax valuation allowances, projected benefit obligations for postretirement plans, accounting for business combinations, goodwill and other intangible asset impairment testing, environmental liabilities and assets, allowance for credit losses and inventory valuation. Actual results could differ from these estimates. ITT’s quarterly financial periods end on the Saturday that is closest to the last day of the calendar quarter, except for the last quarterly period of the fiscal year, which ends on December 31st. For ease of presentation, the quarterly financial statements included herein are described as ending on the last day of the calendar quarter. Certain prior year amounts have been reclassified to conform to the current year presentation.