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Considered [Text Block] Document Fiscal Period Focus Document Fiscal Period Focus Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Trading Symbol Trading Symbol Schedule of Revenues by Geographic Region [Line Items] Schedule of Revenues by Geographic Region [Line Items] Schedule of Revenues by Geographic Region Geographical [Domain] Geographical [Domain] Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Number of geographic regions Number of Geographic Regions Number of Geographic Regions Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Business Combination, Recognized Asset Acquired and Liability Assumed 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Systems [Member] Systems Other assets Increase (Decrease) in Other Noncurrent Assets Gross profit Gross Profit Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Dilutive effect of common shares from stock options and restricted stock units Weighted Average Number of Shares Outstanding, Diluted, Adjustment CalypsoAI CalypsoAI [Member] CalypsoAI Cash paid for amounts included in the measurement of operating lease liabilities Operating Lease, Payments Cost of net revenues Cost of Revenue [Abstract] Award Timing Predetermined Award Timing Predetermined [Flag] Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Level 1 Fair Value, Inputs, Level 1 [Member] Effective tax rate Effective Income Tax Rate Reconciliation, Percent Total lease payments Lessee, Operating Lease, Liability, to be Paid Sales of investments Proceeds from Sale of Investments Proceeds from Sale of Investments All Executive Categories All 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Policies [Abstract] Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Q1 2025 Restructuring Plan Q1 2025 Restructuring Plan [Member] Q1 2025 Restructuring Plan Total lease liabilities Total lease liabilities Operating Lease, Liability SurePath AI, Inc. SurePath AI, Inc. [Member] SurePath AI, Inc. 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Balance (in shares) Common Stock, Shares, Outstanding Award Timing Disclosures [Line Items] Net income per share — diluted (dollars per share) Diluted net income per share (dollars per share) Earnings Per Share, Diluted Entity Current Reporting Status Entity Current Reporting Status Net cash used in financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Restructuring Charges [Abstract] Restructuring Charges [Abstract] Total Shareholder Return Amount Total Shareholder Return Amount Research and development Research and Development Expense Business Combination, Recognized Asset Acquired, Asset Business Combination, Recognized Asset Acquired, Asset Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Revenue from contract with customer, excluding assessed tax Revenue from Contract with Customer, Excluding Assessed Tax 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[Text Block] Prepaid expenses Prepaid Expense, Current Proceeds from the exercise of stock options and purchases of stock under employee stock purchase plan Proceeds, Issuance of Shares, Share-Based Payment Arrangement, Including Option Exercised Operating lease, number of square feet Operating Lease, Number of Square Feet Operating Lease, Number of Square Feet Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Customer, Extent of Reliance [Line Items] Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Customer, Extent of Reliance [Line Items] Inventories Increase (Decrease) in Inventories Weighted average discount rate Operating Lease, Weighted Average Discount Rate, Percent Segment Reporting [Table] Segment Reporting [Table] Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares 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Asset, Amount Unrecorded Unconditional Purchase Obligation Unrecorded Unconditional Purchase Obligation 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] Office Building Office Building [Member] Stock-based compensation Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Common stock, shares issued Common Stock, Shares, Issued Measure: Measure [Axis] Finished goods Inventory, Finished Goods, Gross Equity Components [Axis] Equity Components [Axis] Accounts receivable Increase (Decrease) in Accounts Receivable Product and Service [Domain] Product and Service [Domain] Beginning Balance Ending Balance Capitalized Contract Cost, Net Additional capitalized 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Measurement [Axis] Statistical Measurement [Axis] Insider Trading Arrangements [Line Items] Award Type Award Type [Axis] Short-term lease expense Short-Term Lease, Cost Sublease income payment remainder of fiscal year Lessor, Operating Lease, Payment to be Received, Remainder of Fiscal Year Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Accounts receivable, net of allowances of $2,788 and $2,877 Accounts Receivable, after Allowance for Credit Loss, Current Class of Treasury Stock Class of Treasury Stock [Table Text Block] Retained earnings Retained Earnings (Accumulated Deficit) Product and Service [Axis] Product and Service [Axis] Equity Securities, FV-NI Equity Securities, FV-NI 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] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Common Stock Common Stock [Member] Operating lease expense Operating Lease, Cost Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover [Abstract] Cover [Abstract] Concentration risk percentage Concentration Risk, Percentage Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Unrecorded Unconditional Purchase Obligation, to be Paid, Year One Unrecorded Unconditional Purchase Obligation, to be Paid, Year One Equity Awards Adjustments Equity Awards Adjustments [Member] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Total liabilities and shareholders' equity Liabilities and Equity Variable lease expense Variable Lease, Cost Interest Income, Other Interest Income, Other Restructuring Charges Restructuring, Impairment, and Other Activities Disclosure [Text Block] Employee Stock Option Share-Based Payment Arrangement, Option [Member] Schedule of Revenues by Geographic Region [Table] Schedule of Long-lived Assets by Geographic Region [Table] Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Table] Segments [Axis] Segments [Axis] Schedule of Product Revenues by Systems and Software Schedule of Product Information [Table Text Block] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Restructuring charges Restructuring Charges Plan Name [Axis] Plan Name [Axis] Tabular List, Table Tabular List [Table Text Block] Equity Securities, FV-NI, Noncurrent Equity Securities, FV-NI, Noncurrent Numerator Numerator [Abstract] Numerator [Abstract] Other income, net Other Nonoperating Income (Expense) Name Awards Close in Time to MNPI Disclosures, Individual Name Purchases of investments Payments to Acquire Investments 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] General and administrative General and Administrative Expense Property, Plant and Equipment, Type [Domain] Long-Lived Asset, Class [Domain] Preferred stock, shares authorized Preferred Stock, Shares Authorized Preferred stock, no par value; 10,000 shares authorized, no shares issued and outstanding Preferred Stock, Value, Issued Adjustment to Compensation: Adjustment to Compensation [Axis] Software Software [Member] Software Share Repurchase Program [Axis] Share Repurchase Program [Axis] Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount October Twenty Six Two Thousand Ten Program October Twenty Six Two Thousand Ten Program [Member] October Twenty Six Two Thousand Ten Program Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Credit Facility [Axis] Credit Facility [Axis] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Name Measure Name Income Taxes Income Tax Disclosure [Text Block] Accounts payable Accounts Payable, Current Pay vs Performance Disclosure [Line Items] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Hierarchy and NAV [Domain] Other Other Noncash Income (Expense) 2031 Lessee, Operating Lease, Liability, to be Paid, Year Five F5, Inc. 2026 Incentive Award Plan [Member] F5, Inc. 2026 Incentive Award Plan [Member] F5, Inc. 2026 Incentive Award Plan Debt Instrument [Line Items] Debt Instrument [Line Items] Other current assets Increase (Decrease) in Other Current Assets Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Entity Filer Category Entity Filer Category Short-Term Investments Short-Term Investments Debt Instrument, Interest Rate, Basis for Effective Rate Debt Instrument, Interest Rate, Basis for Effective Rate Name Trading Arrangement, Individual Name Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalent Maturities of investments Proceeds from Maturity of Investments Proceeds from Maturity of Investments Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Company Selected Measure Amount Company Selected Measure Amount Depreciation and amortization Depreciation, Depletion and Amortization Unrecorded Unconditional Purchase Obligation, to be Paid, Year Four Unrecorded Unconditional Purchase Obligation, to be Paid, Year Four Current assets Assets, Current [Abstract] Insurance Recoveries Insurance Recoveries Weighted average remaining lease term (in years) Operating Lease, Weighted Average Remaining Lease Term Non-PEO NEO Non-PEO NEO [Member] Entity Address, Address Line One Entity Address, Address Line One Right-of-use assets obtained in exchange for lease obligations Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Provision for income taxes Income Tax Expense (Benefit) John Maddison [Member] John Maddison Adjustments to reconcile net income to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Noncash Item [Abstract] Customer Concentration Risk Customer Concentration Risk [Member] Cost of net revenues Cost of Product and Service Sold Award Timing Method Award Timing Method [Text Block] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Michael Montoya [Member] Michael Montoya Net income Net income Net Income (Loss) Attributable to Parent Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Statement [Table] Statement [Table] Restatement Determination Date: Restatement Determination Date [Axis] Taxes paid related to net share settlement of equity awards Cost of Issuance of Treasury Stock Cost of Issuance of Treasury Stock Capitalized Contract Cost, Impairment Loss Capitalized Contract Cost, Impairment Loss Contract with Customer, Asset and Liability Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Net revenues Revenues [Abstract] Unrecorded Unconditional Purchase Obligation, to be Paid, Remainder of Fiscal Year Unrecorded Unconditional Purchase Obligation, to be Paid, Remainder of Fiscal Year Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block]