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Additional Paid in Capital, Common Stock All Adjustments to Compensation All Adjustments to Compensation [Member] Corporate expense Corporate Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] Business Combination [Axis] Business Combination [Axis] Equity [Abstract] Equity [Abstract] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Net cash provided by (used in) operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Payments for civil penalty Payments for Legal Settlements Remaining performance obligation Revenue, Remaining Performance Obligation, Percentage Income Statement [Abstract] Income Statement [Abstract] Document Transition Report Document Transition Report Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Derivatives designated as hedging instruments: Designated as Hedging Instrument [Member] Inter-segment Eliminations Intersegment Eliminations [Member] Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Schedule of Carrying Value of Acquired Finite-Lived Intangible Assets Intangible Asset, Finite-Lived [Table Text Block] Shares Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward] 2.75% Fixed Rate Senior Notes due April 2031 2.75% Unsecured Senior Notes due April 2031 [Member] 2.75% Unsecured Senior Notes due April 2031 City Area Code City Area Code Amortization of net prior service cost (income) Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member] Restricted Stock Restricted Stock [Member] Accumulated Other Comprehensive Income (Loss) Total AOCI Attributable to Parent [Member] All Individuals All Individuals [Member] Net gain (loss) recognized in other income and expense, net—Foreign Exchange Contracts Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), Adjustments, after Tax Name Forgone Recovery, Individual Name Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Weighted Average Fair Value per Share Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Statement [Line Items] Statement [Line Items] Total Assets Total Teledyne identifiable assets Assets Reserves for environmental remediation obligations Accrual for Environmental Loss Contingencies Instrumentation Instrumentation [Member] Instrumentation. 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Schedule of Purchase Price Goodwill Acquired, and Intangible Assets Acquired Business Combination [Table Text Block] Research and development Research and development Research and Development Expense Adjustments to reconcile net income (loss) including noncontrolling interest to net cash provided by (used in) operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Expected reclassification of gain (loss) over the next 12 months Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Financing Activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Net sales Revenue from Contract with Customer, Excluding Assessed Tax Available balance Line of Credit Facility, Remaining Borrowing Capacity Interest cost on benefit obligation Defined Benefit Plan, Interest Cost Fair Value Asset Derivative Asset Intangible Asset, Finite-Lived, Class [Axis] Intangible Asset, Finite-Lived, Class [Axis] Exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Goodwill and Acquired Intangible Assets Intangible Asset and Goodwill [Text Block] Underlying Securities Award Underlying Securities Amount Less: Comprehensive income (loss) attributable to noncontrolling interest Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Total acquired intangible assets Intangible Asset, Excluding Goodwill, before Accumulated Amortization Revenue Recognition and Contract Balances Revenue from Contract with Customer [Text Block] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Schedule of Effect of Derivative Instruments Designated as Cash Flow Hedges Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block] Other investing, net Payment for (Proceeds from) Other Investing Activity Inventories Increase (Decrease) in Inventories Segment Reporting [Table] Segment Reporting [Table] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] All Trading Arrangements All Trading Arrangements [Member] Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Operating income (loss) Operating Income (Loss) Remaining performance obligation Revenue, Remaining Performance Obligation, Amount Current Fiscal Year End Date Current Fiscal Year End Date Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Derivative [Line Items] Derivative [Line Items] Asia Asia [Member] Business Acquisitions Business Combination [Text Block] Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Entity File Number Entity File Number Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Service cost—benefits earned during the period Defined Benefit Plan, Service Cost Net gain (loss) reclassified from AOCI into revenue/cost of sales—Foreign Exchange Contracts Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax Weighted Average Exercise Price Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Common stock, shares issued (in shares) Common Stock, Shares, Issued Measure: Measure [Axis] Finished goods Inventory, Finished Goods, Gross Treasury stock (in shares) Treasury Stock, Common, Shares Contract with Customer, Basis of Pricing [Axis] Contract with Customer, Basis of Pricing [Axis] Accumulated Other Comprehensive Income (Loss) Comprehensive Income (Loss) Note [Text Block] Repaid Fixed Fate Senior Notes Debt Instrument, Repaid, Principal Equity Components [Axis] Equity Components [Axis] Stock-based compensation Stock or Unit Option Plan Expense Product and Service [Domain] Product and Service [Domain] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Entity Interactive Data Current Entity Interactive Data Current Less: Net income (loss) attributable to noncontrolling interest Net Income (Loss) Attributable to Noncontrolling Interest Long-term deferred tax liabilities Deferred Income Tax Liabilities, Net Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Entity Small Business Entity Small Business Comprehensive income (loss) attributable to Teledyne Comprehensive Income (Loss), Net of Tax, Attributable to Parent Termination Date Trading Arrangement Termination Date Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Other assets, net Other Assets, Noncurrent Document Type Document Type Purchases of businesses, net of cash acquired Cash consideration, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Accrued liabilities Accrued Liabilities, Current Fixed-price contracts Fixed-Price Contract [Member] Fair Value as of Grant Date Award Grant Date Fair Value Schedule of Carrying Value of Acquired Indefinite-Lived Intangible Assets Intangible Asset, Indefinite-Lived [Table Text Block] Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Earnings Per Share, Basic, by Common Class, Including Two-Class Method [Table] Schedule of Goodwill [Table] Goodwill [Table] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Remaining available repurchase authorization Share Repurchase Program, Remaining Authorized, Amount Arrangement Duration Trading Arrangement Duration Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Local Phone Number Local Phone Number Other long-term liabilities Contract with Customer, Liability, Noncurrent Acquisition Standard Product Warranty Accrual, Increase from Business Combination 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 Net Investment Hedging Net Investment Hedging [Member] Income (loss) before income taxes Income (loss) before income taxes Total before tax Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Commitments and contingencies (see Note 15) Commitments and Contingencies Gross Carrying Amount Intangible Asset, Finite-Lived, before Accumulated Amortization Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Axis] Qioptiq Optical Systems And Advanced Electronics Systems Businesses (Qioptiq) [Member] Optical Systems And Advanced Electronics Systems Businesses (Qioptiq) Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Executive Category: Executive Category [Axis] Deferred taxes and income taxes receivable (payable), net Increase (Decrease) In Deferred And Income Taxes Payable Increase (Decrease) In Deferred And Income Taxes Payable Goodwill [Roll Forward] Goodwill [Roll Forward] Recognized at a point in time Transferred at Point in Time [Member] Liabilities, Redeemable Noncontrolling Interest and Stockholders’ Equity Liabilities and Equity [Abstract] Intangible Asset, Finite-Lived, Class [Domain] Intangible Asset, Finite-Lived, Class [Domain] Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Inventories, net Total inventories, net Inventory, Net Award Type [Domain] Award Type [Domain] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Fair Value Measurement Fair Value Disclosures [Text Block] Movement in Standard Product Warranty Accrual [Roll Forward] Movement in Standard Product Warranty Accrual [Roll Forward] Test and Measurement Instrumentation Test and Measurement Instrumentation [Member] Test and Measurement Instrumentation [Member] U.S. Govt. United States Government [Member] United States Government [Member] PEO Name PEO Name Geographical [Axis] Geographical [Axis] Accrued expenses and other liabilities Increase (Decrease) in Accrued Liabilities Non-service retirement benefit income (expense), net Non-service retirement benefit income Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component Total contract liabilities Contract with Customer, Liability Cash Flow Hedges Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] 2.50% Fixed Rate Senior Notes due August 2030 2.50% Unsecured Senior Notes due 2030 [Member] 2.50% Unsecured Senior Notes due 2030 Proceeds from (payments on) other debt Proceeds from (Repayments of) Other Debt Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Entity Tax Identification Number Treasury stock repurchased, including excise tax Treasury Stock, Value, Acquired, Cost Method Product concentration Product Concentration Risk [Member] Exercised (in USD per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Cash and cash equivalents—beginning of period Cash and cash equivalents—end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Treasury stock issued Stock Issued During Period, Value, Treasury Stock Reissued Schedule of Finite-Lived Intangible Assets [Table] Intangible Asset, Finite-Lived [Table] Accounts payable Increase (Decrease) in Accounts Payable Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Schedule of Reclassification out of Accumulated Other Comprehensive Income Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [Member] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Comprehensive income (loss) including noncontrolling interest Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Debt Instrument [Axis] Debt Instrument [Axis] Customer [Domain] Customer [Domain] Schedule of Inventory Schedule of Inventory, Current [Table Text Block] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Schedule of Notional Amounts of Outstanding Foreign Currency Contracts Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Basic earnings per common share (in USD per share) Earnings Per Share, Basic Accrued liabilities Contract with Customer, Liability, Current Purchases of treasury stock, including excise tax Payments for Repurchase of Common Stock Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Insider Trading Arrangements [Line Items] Long-term debt, net of current portion Total long-term debt, net of current portion Long-Term Debt, Excluding Current Maturities Other debt Other Debt [Member] Other Debt Net gain (loss) recognized in AOCI Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax Award Type [Axis] Award Type [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Accounts receivable, net Accounts Receivable, after Allowance for Credit Loss, Current Retained earnings Retained Earnings (Accumulated Deficit) Product and Service [Axis] Product and Service [Axis] Hedge activity, net of tax Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Redeemable Noncontrolling Interest Temporary Equity, Including Noncontrolling Interest Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Aerospace and Defense Electronics Aerospace and Defense Electronics [Member] Aerospace and Defense Electronics. Common Stock Common Stock [Member] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover page. Cover [Abstract] Derivative Contract Type [Domain] Derivative Contract [Domain] Net sales fixed price contracts percent (as a percent) Concentration Risk, Percentage Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Equity Awards Adjustments Equity Awards Adjustments [Member] Hedging Relationship [Domain] Hedging Relationship [Domain] Number of acquisitions Business Combination, Number of Businesses Acquired Total Liabilities, Redeemable Noncontrolling Interest and Stockholders’ Equity Liabilities and Equity Stock Options Share-Based Payment Arrangement, Option [Member] Segments [Axis] Segments [Axis] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Tabular List, Table Tabular List [Table Text Block] Other income (expense), net Other income (expense), net Other Nonoperating Income (Expense) Name Awards Close in Time to MNPI Disclosures, Individual Name Stockholders’ Equity Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Forfeited/Canceled (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Raw materials and supplies Inventory, Raw Materials and Supplies, Gross Preferred stock, $0.01 par value; outstanding shares—none Preferred Stock, Value, Issued Adjustment to Compensation: Adjustment to Compensation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Hedging Designation [Axis] Hedging Designation [Axis] Reconciliation to Income (loss) before income taxes Segment Reporting, Income (Loss) before Income Tax [Abstract] Total 2026 Acquisitions [Member] 2026 Acquisitions Credit Facility [Axis] Credit Facility [Axis] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Total assets recorded at fair value Assets, Fair Value Disclosure Name Measure Name Income Taxes Income Tax Disclosure [Text Block] Accounts payable Accounts Payable, Current Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Debt Instrument [Line Items] Debt Instrument [Line Items] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Consideration Transferred Business Combination, Consideration Transferred Additional Paid-in Capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Indefinite-lived Intangible Assets [Axis] Intangible Asset, Indefinite-Lived, Class [Axis] Name Trading Arrangement, Individual Name Cross-currency swap agreements Cross-currency swaps Currency Swap [Member] Cash and cash equivalents Cash and Cash Equivalent Proposed charges settled Loss Contingency, Claims Settled, Number SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Company Selected Measure Amount Company Selected Measure Amount Effect of offset Derivative, Fair Value, Amount Offset Derivative, Fair Value, Amount Offset Derivatives not designated as hedging instruments: Not Designated as Hedging Instrument [Member] Net income (loss) including noncontrolling interest Net income (loss) including noncontrolling interest Net income (loss) including noncontrolling interest Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Current Assets Assets, Current [Abstract] Fair Value Liability Derivative Liability DD-Scientific DD Scientific [Member] DD Scientific Non-PEO NEO Non-PEO NEO [Member] Senior Notes Senior Notes [Member] Entity Address, Address Line One Entity Address, Address Line One Vested (in USD per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Provision (benefit) for income taxes Income tax impact Income Tax Expense (Benefit) Cost of sales Cost of sales Cost of Product and Service Sold Award Timing Method Award Timing Method [Text Block] 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 Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Amortization of net actuarial loss (gain) Defined Benefit Plan, Amortization of Gain (Loss) Accumulated Other Comprehensive Income (Loss) [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Net income (loss) attributable to Teledyne Net income (loss) Total Net Income (Loss) Attributable to Parent Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Statement [Table] Statement [Table] Restatement Determination Date: Restatement Determination Date [Axis] Proceeds from exercise of stock options Proceeds from Stock Options Exercised Schedule of Changes in AOCI by Component Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Options exercisable at end of period (in USD per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price Other Commercial And Other [Member] Commercial And Other [Member] Schedule of Contract Liabilities Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Derivative asset, fair value Derivative Asset, Subject to Master Netting Arrangement, before Offset General Basis of Presentation and Significant Accounting Policies [Text Block] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract]