DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION (Policies)	6 Months Ended
	Jun. 29, 2024
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 energy 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 reportable segments: Motion Technologies (MT), consisting of friction and shock and vibration equipment; Industrial Process (IP), consisting of industrial flow equipment and services; and Connect & Control Technologies (CCT), 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. Business Combination On January 19, 2024, we completed the acquisition of Svanehøj Group A/S (Svanehøj) for a purchase price of $407.6, net of cash acquired. Subsequent to the acquisition, Svanehøj’s results are reported within our IP segment. Refer to Note 18, Acquisitions and Divestitures, for more information. Divestiture of Wolverine Business On July 22, 2024, the Company completed the sale of its Wolverine business to an unrelated third party for approximately $171. The disposal group met the criteria for classification as held for sale in accordance with Accounting Standards Codification (ASC) 360, “Property, Plant, and Equipment”. Accordingly, we presented the assets and liabilities associated with the disposal group separately as held for sale within our Consolidated Balance Sheet for the period ended June 29, 2024. The Company evaluates all disposal transactions to determine whether such disposal qualifies as discontinued operations in accordance with ASC 205-20, “Discontinued Operations”. We concluded that the divestiture does not qualify as a discontinued operation. Refer to Note 18, Acquisitions and Divestitures, for more 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, 2023, presented herein, has been derived from our audited balance sheet included in our Annual Report on Form 10-K (2023 Annual Report) for the year ended December 31, 2023, but does not include all disclosures required by accounting principles generally accepted in the United States (GAAP). We consistently applied the accounting policies described in the 2023 Annual Report in preparing these unaudited financial statements. These financial statements should be read in conjunction with the financial statements and notes thereto included in our 2023 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, 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, inventory valuation, and assets held for sale. 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. ITT’s second quarter for 2024 and 2023 ended on June 29, 2024 and July 1, 2023, respectively. Certain prior year amounts have been reclassified to conform to the current year presentation.