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Cisco Systems Inc. [Member] Cisco Systems Inc. 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Non-current liabilities Liabilities, Noncurrent [Abstract] Schedule of Reconciliation between Taxes that Would Arise by Applying Statutory Tax Rate of Country of Principal Operations to Effective Tax Charge Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Award granted vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Accounts Receivable, Allowance for Credit Loss [Roll Forward] Accounts Receivable, Allowance for Credit Loss [Roll Forward] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Preferred shares, shares authorized (in shares) Preferred Stock, Shares Authorized Repurchase of ordinary shares Payments for Repurchase of Common Stock Adoption Date Trading Arrangement Adoption Date Contract assets Contract with Customer, Asset, after Allowance for Credit Loss Certificates of deposit and time deposits Interest-Bearing Deposits [Member] Customer [Axis] Customer [Axis] Operating income Operating Income (Loss) Line of credit Line of Credit [Member] Annual leave Compensation Related Costs, Policy [Policy Text Block] Retained earnings Retained Earnings (Accumulated Deficit) 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] Unrealized Gains (Losses) on Derivative Instruments Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] Employees maximum contribution to 401 (K) Plan Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Others Deferred Tax Liabilities, Other Retirement Plan Type [Axis] Retirement Plan Type [Axis] Statement [Table] Statement [Table] Other income (expense), net Other Nonoperating Income (Expense) Deferred Deferred Income Tax Expense (Benefit) 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 [Abstract] Cash flows from financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Revenue Revenue Benchmark [Member] All Adjustments to Compensation All Adjustments to Compensation [Member] Amendment Flag Amendment Flag Tax effect on share-based compensation expense Share-Based Payment Arrangement, Expense, Tax Benefit Other Comprehensive Income Location [Axis] Other Comprehensive Income Location [Axis] Shares authorized for future issuance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized Schedule of Weighted-Average Remaining Life of Intangible Assets Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block] Less: Treasury shares (3,874,078 shares and 3,312,220 shares as of June 27, 2025 and June 28, 2024, respectively) Treasury Stock, Common, Value Customer Warrant Customer Warrant Policy [Policy Text Block] Customer Warrant Policy Termination Date Trading Arrangement Termination Date Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Weighted-average discount rate Operating Lease, Weighted Average Discount Rate, Percent Weighted average number of ordinary shares outstanding, basic (in shares) Weighted-average number of ordinary shares outstanding Weighted Average Number of Shares Outstanding, Basic Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table] Contract  Liabilities Change in Contract with Customer, Liability [Abstract] Segment Reporting [Abstract] Segment Reporting [Abstract] Cost of revenues Cost of revenues Cost of Revenue Interest and penalties recorded Income Tax Examination, Penalties and Interest Expense Amounts reclassified from AOCI Total amounts reclassified from AOCI Reclassification from AOCI, Current Period, before Tax, Attributable to Parent Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] Trade accounts receivable Accounts Receivable, before Allowance for Credit Loss Auditor Information [Abstract] Auditor Information Restructuring and Related Activities [Abstract] Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Consolidated Entities [Axis] Consolidated Entities [Axis] Ordinary shares, par value (in USD per share) Common Stock, Par or Stated Value Per Share Others Other Non-Optical Communications [Member] Other Non-Optical Communications Use of estimates Use of Estimates, Policy [Policy Text Block] Services Services [Policy Text Block] Services Tax effects Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent Schedule of Financial Instruments Measured at Fair Value on Recurring Basis Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] Insider Trading Arrangements [Line Items] 2023 credit facility agreement 2023 Credit Facility Agreement [Member] 2023 Credit Facility Agreement Raw materials Inventory, Raw Materials, Gross Total Liabilities Liabilities Currency [Axis] Currency [Axis] Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Product Concentration Risk Product Concentration Risk [Member] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Additions during the year Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Grant date fair value per share (in USD per share) Class Of Warrant Or Right, Grant Date Fair Value Per Share Class Of Warrant Or Right, Grant Date Fair Value Per Share Derivatives gain (loss) recognized in other comprehensive income (loss): Derivatives Gain (Loss) Recognized Into Other Comprehensive Income [Abstract] Derivatives gain(loss) recognized into other comprehensive income [Abstract] Schedule of Restricted Share Unit Activity Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block] Others North America, Other [Member] North America, Other Service coverage ratio, minimum at payment of a dividend Debt Instrument, Covenant, Service Coverage Ratio, Minimum At Payment of A Dividend Debt Instrument, Covenant, Service Coverage Ratio, Minimum At Payment of A Dividend Debt securities, available-for-sale Debt Securities, Available-for-Sale Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Underfunded status Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position Corporate debt securities Corporate Debt Securities [Member]