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[Abstract] Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] Less: Income attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Changes in assets and liabilities: Changes In Assets And Liabilities Net Of Acquisitions [Abstract] Changes in assets and liabilities net of acquisitions. Gain/(loss) on foreign currency derivative contracts(a) Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net Supplier Finance Program [Domain] Supplier Finance Program [Domain] Entity Small Business Entity Small Business Common stock: [Abstract] Common stock: [Abstract] Common stock: Comprehensive income attributable to ITT Inc. Comprehensive Income (Loss), Net of Tax, Attributable to Parent 2028 Lessee, Operating Lease, Liability, to be Paid, Year Three Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation Property, Plant, and Equipment [Line Items] Property, Plant, and Equipment [Line Items] Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Inventory Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Inventory 2025 Credit Agreement Term Loan 2025 Credit Agreement Term Loan [Member] 2025 Credit Agreement Term Loan Net change in postretirement benefit plans, net of tax impacts of $0.3, $0.4, $0.5, and $0.7, respectively Net change in postretirement benefit plans, net of tax Net change in postretirement benefit plans, net of tax Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax Payments Accrual for Environmental Loss Contingencies, Payments Other non-current assets Other non-current assets Other Assets, Noncurrent Financing Activities Cash Provided by (Used in) Financing Activity, Continuing Operation [Abstract] Document Type Document Type Acquisitions, net of cash acquired Net assets acquired Payments to Acquire Businesses, Net of Cash Acquired Gain (Loss) on Extinguishment of Debt Gain (Loss) on Extinguishment of Debt Auto and rail Automotive and rail [Member] Automotive and rail [Member] Accrued and other current liabilities Accrued and other current liabilities Accrued Liabilities, Current Operating Activities [Axis] Operating Activities [Axis] Site Contingency [Line Items] Site Contingency [Line Items] Schedule of Goodwill [Table] Goodwill [Table] Other Other Assets, Miscellaneous, Current Contract liabilities Business Combination, Recognized Liability Assumed, Deferred Revenue, Current Stock Repurchase Program, Remaining Authorized Repurchase Amount Share Repurchase Program, Remaining Authorized, Amount Net foreign currency translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax Subsequent Event [Line Items] Subsequent Event [Line Items] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Long-term debt issued, net of debt issuance costs Proceeds from Issuance of Long-Term Debt Local Phone Number Local Phone Number Non-current contract liabilities Contract with Customer, Liability, Noncurrent Work in process Inventory, Work in Process, Gross Consolidation Items [Axis] Consolidation Items [Axis] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] Income before income tax expense Income from continuing operations before income tax Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest 2023 Share Repurchase Program 2023 Share Repurchase Program [Member] 2023 Share Repurchase Program Supplier Finance Program [Axis] Supplier Finance Program [Axis] Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, Tax Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, Tax Finite-lived intangible total Intangible Asset, Finite-Lived, before Accumulated Amortization Revenue Revenue Revenues Debt Instrument, Redemption, Period [Domain] Debt Instrument, Redemption, Period [Domain] Plant, property and equipment, gross Property, Plant, and Equipment, before Accumulated Depreciation, Depletion, and Amortization Property, Plant, and Equipment, before Accumulated Depreciation, Depletion, and Amortization 2030 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Four Machinery and Equipment [Member] Machinery and Equipment [Member] Receivable Type [Axis] Receivable Type [Axis] Shares repurchased aggregate value under settlement of employee tax withholding obligations Shares Repurchased Aggregate Value Under Settlement Of Employee Tax Withholding Obligations Shares repurchased aggregate value under settlement of employee tax withholding obligations. Goodwill [Roll Forward] Goodwill [Roll Forward] Furniture and Fixtures [Member] Furniture and Fixtures [Member] Intangible Asset, Finite-Lived, Class [Domain] Intangible Asset, Finite-Lived, Class [Domain] Interest income Interest Income, Operating and Nonoperating Trade name Trade Names [Member] Confirmed obligations outstanding at the beginning of the year Confirmed obligations outstanding at the end of period Supplier Finance Program, Obligation Inventories Inventories Inventory, Net Award Type [Domain] Award Type [Domain] Supplemental Disclosures of Cash Flow and Non-Cash Information: Supplemental Cash Flow Information [Abstract] 2027 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year One Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Geographical [Axis] Geographical [Axis] Change in accrued expenses Increase (Decrease) in Accrued Liabilities Schedule of Reclassification Adjustment Schedule of Reclassification Adjustment [Table Text Block] Schedule of Reclassification Adjustment Schedule of Short-term Debt [Table] Short-Term Debt [Table] Property, Plant and Equipment, Type [Axis] Long-Lived Asset, Class [Axis] Entity Tax Identification Number Entity Tax Identification Number Aggregate Eliminations Corp And Other Aggregate Eliminations Corp And Other [Member] Total eliminations corporate and other. Cash payments Payments for Restructuring Business Combination, Intangible Asset, Acquired, Finite-Lived and Indefinite-Lived Business Combination, Intangible Asset, Acquired, Finite-Lived and Indefinite-Lived [Table Text Block] Schedule of Finite-Lived Intangible Assets [Table] Intangible Asset, Finite-Lived [Table] Change in accounts payable Increase (Decrease) in Accounts Payable Other Other Accrued Liabilities, Current Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Base Rate Base Rate [Member] Shareholders' Equity, Dollars [Abstract] Common Stock, Dollars [Abstract] Common Stock, Dollars Comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Debt Instrument [Axis] Debt Instrument [Axis] Subsequent Event [Table] Subsequent Event [Table] Other liabilities Business Combination, Recognized Liability Assumed, Other Liability, Noncurrent Equity-based compensation Share-Based Payment Arrangement, Noncash Expense 2028 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Two Land and improvements Land Schedule of Debt Table Schedule of Debt [Table Text Block] Inventories, Net Table Schedule of Inventory, Current [Table Text Block] Lessee, Operating Leases Lessee, Operating Leases [Text Block] Long-Term Debt, Type [Domain] Long-Term Debt, Type [Domain] Basic Earnings Per Share, Basic Equity, Class of Treasury Stock [Line Items] Equity, Class of Treasury Stock [Line Items] Summary of Long-Term Incentive Plan Award Grants Table Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block] 2026 DDTL Credit Agreement 2026 DDTL Credit Agreement [Member] 2026 DDTL Credit Agreement Current contract liabilities Contract with Customer, Liability, Current Share repurchases under repurchase plan Payments for Repurchase of Common Stock Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Supplier Finance Program [Table] Supplier Finance Program [Table] Derivative Instruments, Gain (Loss) Derivative Instruments, Gain (Loss) [Table Text Block] Cost of revenue Costs of revenue(a) Cost of Revenue Award Type [Axis] Award Type [Axis] Number Of Active Environmental Investigation And Remediation Sites Number Of Active Environmental Investigation And Remediation Sites Number of active environmental investigation and remediation sites. Retained earnings Retained Earnings (Accumulated Deficit) Schedule of Commercial Paper Schedule of Short-Term Debt [Table Text Block] Restructuring and Related Activities [Abstract] Restructuring and Related Activities [Abstract] Product and Service [Axis] Product and Service [Axis] Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Accounts payable and accrued liabilities Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Accounts payable and accrued liabilities Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Accounts payable and accrued liabilities Short-term Debt [Line Items] Short-Term Debt [Line Items] Common Stock [Member] Common Stock [Member] Severance and other employee-related Employee Severance [Member] Cover [Abstract] Cover [Abstract] Acquired Accrual for Environmental Loss Contingencies, Increase (Decrease) for Acquisitions and Divestitures Reclassification, Comparability Adjustment Reclassification, Comparability Adjustment [Policy Text Block] Business Combination Backlog Amortization in Pro Forma Business Combination Backlog Amortization in Pro Forma Business Combination Backlog Amortization in Pro Forma Weighted Average Interest Rate Short-Term Debt, Weighted Average Interest Rate, at Point in Time Foreign exchange translation Goodwill, Foreign Currency Translation, Gain (Loss) Total liabilities and shareholders’ equity Liabilities and Equity Short-term borrowings Total short-term borrowings Debt, Current Noncontrolling interests Equity, Attributable to Noncontrolling Interest Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles Segments [Axis] Segments [Axis] Plan Name [Axis] Plan Name [Axis] Total restructuring costs Restructuring Charges Receivables, Net by Type Table Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Segment Operating Margin Segment Operating Margin [Table Text Block] Segment Operating Margin Table detailing operating margin for each segment. Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Amortization of prior service benefit, net of tax expense of $0.2, $0.4, $0.4, and $0.7 respectively Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, after Tax Business Combination, Consideration Transferred, Equity Interest Business Combination, Consideration Transferred, Equity Interest [Table Text Block] Other non-operating (income) expense, net Other Nonoperating Income (Expense) 2029 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Three Remainder of 2026 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Remainder of Fiscal Year Shareholders’ equity: Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Open Forward Foreign Currency Contract Open Forward Foreign Currency Contract [Table Text Block] Non-current assets: Assets, Noncurrent [Abstract] General and administrative expenses General and Administrative Expense Property, Plant and Equipment, Type [Domain] Long-Lived Asset, Class [Domain] Derivatives and Fair Value Derivatives and Fair Value [Text Block] Raw materials Inventory, Raw Materials and Supplies, Gross Rollforward of Environmental Liability and Related Assets Table Rollforward Of Environmental Liability Table [Table Text Block] Rollforward Of Environmental Liability Table [Table Text Block] Receivables, net Receivables, net Receivables, Net, Current Property, Plant, and Equipment [Table] Property, Plant, and Equipment [Table] New Accounting pronouncements, Not Yet Adopted New Accounting pronouncements, Not Yet Adopted [Policy Text Block] New Accounting pronouncements, Not Yet Adopted Foreign currency and other Foreign exchange translation The effect of foreign currency translation. Share Repurchase Program [Axis] Share Repurchase Program [Axis] Class of Stock [Domain] Class of Stock [Domain] Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Prepaid income taxes Prepaid Taxes Cash paid for interest Interest Paid, Excluding Capitalized Interest, Operating Activity Capital expenditures Payments to Acquire Productive Assets Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Extinguishment of Debt, Amount Extinguishment of Debt, Amount Credit Facility [Axis] Credit Facility [Axis] RESTRUCTURING ACTIONS Restructuring and Related Activities Disclosure [Text Block] Nutrition and health Nutrition and Health [Member] Nutrition and Health Schedule of Repurchase Agreements Schedule of Repurchase Agreements [Table Text Block] Non-current maturities of long-term debt Long-Term Debt and Lease Obligation INCOME TAXES Income Tax Disclosure [Text Block] Accounts payable Accounts Payable, Current Other non-cash charges, net Other Noncash Income (Expense) 2030 Lessee, Operating Lease, Liability, to be Paid, Year Five General industrial General industrial [Member] General industrial [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit Corporate and Other(c) Corporate Segment and Other Operating Segment [Member] Total purchase consideration Business Combination, Consideration Transferred Additional Paid-in Capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Payments to Acquire Business Two, Net of Cash Acquired Payments to Acquire Business Two, Net of Cash Acquired Intangible Asset, Indefinite-Lived, Class [Axis] Intangible Asset, Indefinite-Lived, Class [Axis] Restatement [Axis] Revision of Prior Period [Axis] Cash and cash equivalents Cash and Cash Equivalent Basis of Accounting Basis of Accounting [Text Block] Environmental liabilities and other legal matters Accrued Environmental And Litigation Liabilities Current Accrued environmental and litigation liabilities current. Foreign exchange translation and other Restructuring Reserve, Foreign Currency Translation Gain (Loss) Line of Credit Facility, Incremental Borrowing Capacity Maximum Line of Credit Facility, Incremental Borrowing Capacity Maximum Line of Credit Facility, Incremental Borrowing Capacity Maximum LTIP Net Share Settlement of Stock Incentive Plans LTIP Net Share Settlement of Stock Incentive Plans [Table Text Block] LTIP Net Share Settlement of Stock Incentive Plans Depreciation and amortization Depreciation & Amortization Depreciation, Depletion and Amortization Business Combination, Inventory Step-Up to Fair value Business Combination, Inventory Step-Up to Fair value Business Combination, Inventory Step-Up to Fair value - Nonrecurring fair value adjustment for inventory at acquisition date attributable to business combination included in reported pro forma earnings. Entity Number of Employees Entity Number of Employees Secured Overnight Financing Rate (SOFR) Secured Overnight Financing Rate (SOFR) [Member] Entity Address, Address Line Two Entity Address, Address Line Two Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Accounts and Financing Receivables [Table] Net income Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Business Combination, Price Per Share Business Combination, Price Per Share Assets Assets, Current [Abstract] Revenue Business Combination, Pro Forma Information, Pro Forma Revenue Entity Address, Address Line One Entity Address, Address Line One Line of Credit Facility, Fair Value of Amount Outstanding Line of Credit Facility, Fair Value of Amount Outstanding Income tax expense Income Tax Expense (Benefit) Net income Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest Developed technology Technology-Based Intangible Assets [Member] Net change in cash and cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Other assets Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Other assets Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Other assets Deferred tax liability Business Combination, Recognized Liability Assumed, Deferred Tax Liability Receivables, gross Receivables Gross Current This element represents the gross amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer) for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, unbilled receivable amounts, and other miscellaneous receivable amounts. Accounting Standards Update and Change in Accounting Principle [Text Block] Accounting Standards Update and Change in Accounting Principle [Text Block] Net income attributable to ITT Inc. Net Income (Loss) Attributable to Parent Long-Term Debt, Type [Axis] Long-Term Debt, Type [Axis] Unamortized Debt Issuance Expense Unamortized Debt Issuance Expense Statement [Table] Statement [Table] Proceeds from the exercise of stock options Proceeds from Stock Options Exercised Flow Technologies Flow Technologies [Member] Flow Technologies, formerly Industrial process. Interest income Investment Income, Interest Supplier Finance Program Supplier Finance Program [Table Text Block] Net Contract Assets and Liabilities Table Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Change in receivables Increase (Decrease) in Receivables Net income attributable to ITT Inc. Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Fair value of foreign currency derivative contracts(a) Foreign Currency Derivative Instruments Not Designated as Hedging Instruments at Fair Value, Net Foreign currency and other Allowance for Credit Loss, Foreign Currency and Other Allowance for Credit Loss, Foreign Currency and Other Other Current and Non Current Assets Table Schedule of Other Assets [Table Text Block] Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Property, Plant, and Equipment Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Property, Plant, and Equipment Payments applied towards invoices Supplier Finance Program, Obligation, Settlement Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract]