Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Trading Arrangement: Trading Arrangement [Axis] Maximum Maximum [Member] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Buildings and leasehold improvements Building and Leasehold Improvements [Member] Long-lived, depreciable structure held for productive use and any addition or improvement to assets held under the lease arrangement (including addition or improvement to asset held by lessee under operating lease arrangement). Domestic Income Tax Jurisdiction, Domestic Federal [Member] Title of 12(b) Security Title of 12(b) Security Subsequent event Subsequent Event [Member] Reported Value Measurement Carrying Amount Reported Value Measurement [Member] Adjustment to Compensation, Amount Adjustment to Compensation Amount Schedule of Unrecognized Tax Benefits Roll Forward Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] Segment Reporting [Abstract] Segment Reporting [Abstract] Internal Re-organization Effective Income Tax Rate Reconciliation, Other Adjustments, Internal Re-organization, Percent Effective Income Tax Rate Reconciliation, Other Adjustments, Internal Re-organization, Percent Accrued employee compensation Employee-related Liabilities, Current Litigation settlement, amount accrued Loss Contingency Accrual Deferred income tax expense: Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] Derivative Instrument Risk [Axis] Derivative Instrument [Axis] Fair Value by Measurement Frequency [Axis] Measurement Frequency [Axis] Proceeds from business divestiture Proceeds from Divestiture of Businesses Total Current Current Income Tax Expense (Benefit) Debt Instrument, Convertible, Conversion Price Debt Instrument, Convertible, Conversion Price Authorized Share Capital Common and Preferred Stock Value Authorized Share Capital Common and Preferred Stock Value This element represents the value of authorized share capital consisting of common and preferred stock. Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Effective Income Tax Rate Reconciliation, Percent [Abstract] Effective Income Tax Rate Reconciliation, Percent [Abstract] Unrecorded Unconditional Purchase Obligation, Due within Five Years Unrecorded Unconditional Purchase Obligation, to be Paid, Year Five Dr. John C. Morris [Member] Dr. John C. Morris Leases [Abstract] Leases [Abstract] Intangible Asset, Finite-Lived, Acquired [Line Items] Intangible Asset, Finite-Lived, Acquired [Line Items] Effect of rates different than statutory Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount Schedule of Cash and Cash Equivalents Schedule of Cash and Cash Equivalents [Table Text Block] Ordinary shares, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Discount on trade receivables sold Continuing Involvement With Continued To Be Recognized Transferred Financial Assets, Discount Continuing Involvement With Continued To Be Recognized Transferred Financial Assets, Discount Number of shares, nonvested at the beginning of the period Number of shares, nonvested at the end of the period Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Share-based Compensation Award, Tranche One Share-Based Payment Arrangement, Tranche One [Member] Non-U.S.  Deferred Foreign Income Tax Expense (Benefit) Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Number of Reportable Segments Number of Reportable Segments Total current liabilities Liabilities, Current Work-in-process Inventory, Work in Process, Net of Reserves The Netherlands NETHERLANDS Entity Address, City or Town Entity Address, City or Town Number of shares, granted Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Senior note 4.091 percent due June 2029 Senior note 4.091 percent due June 2029 [Member] Senior note 4.091 percent due June 2029 Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Capital loss carryforward Capital Loss Carryforward, Amount Capital Loss Carryforward, Amount Inventory, Net [Abstract] Inventory, Net [Abstract] Significant Other Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Other comprehensive loss Other Comprehensive Income (Loss), Net of Tax Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] United States UNITED STATES Maximum amount of contribution per employee made by the employer per year Defined Contribution Plan, Maximum Annual Contributions Per Employee, Amount Subsequent Event Type [Axis] Subsequent Event Type [Axis] Government Assistance, Income, Increase (Decrease), Statement of Income or Comprehensive Income [Extensible Enumeration] Government Assistance, Income, Increase (Decrease), Statement of Income or Comprehensive Income [Extensible Enumeration] Concentration Risk by Type [Axis] Concentration Risk Type [Axis] Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Revenue Recognition, Sales Returns and Allowances, and Sales Incentive Programs Revenue from Contract with Customer [Policy Text Block] Total other comprehensive (loss) income, net of tax Other comprehensive loss Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Capital Addition Purchase Commitments Capital Addition Purchase Commitments [Member] Thailand THAILAND Lessee, Operating Lease, Liability, Maturity Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Document Period End Date Document Period End Date Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Aggregate principal amount Debt Instrument, Face Amount Equity Incentive Plan 2022 Equity Incentive Plan 2022 [Member] Equity Incentive Plan 2022 Debt Securities, Available-for-Sale, Realized Loss Debt Securities, Available-for-Sale, Realized Loss Debt Instrument, Interest Rate, Effective Percentage Debt Instrument, Interest Rate, Effective Percentage U.S. Income Tax Paid, Federal, after Refund Received Convertible Debt Convertible Debt Unrecorded Unconditional Purchase Obligation, Due within Two Years Unrecorded Unconditional Purchase Obligation, to be Paid, Year Two Aggregate fair value of nonvested shares vested Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Shell Company Entity Shell Company Singapore SINGAPORE Other individually immaterial items Effective Income Tax Rate Reconciliation, Other Adjustments, Amount Operating Lease, Liability, Current Operating Lease, Liability, Current Schedule of Product Warranty Liability Schedule of Product Warranty Liability [Table Text Block] Earnings Per Share Earnings Per Share [Text Block] Repairs and replacements Standard Product Warranty Accrual, Decrease for Payments Net income per share: Earnings Per Share [Abstract] Document Fiscal Period Focus Document Fiscal Period Focus Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Total Liabilities Liabilities Trading Symbol Trading Symbol Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items] Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items] Acquisition of property, equipment and leasehold improvements Payments to Acquire Property, Plant, and Equipment Cash and cash equivalents and short-term investments Cash and Cash Equivalents and Short-term Investments, Fair Value Disclosure Cash and Cash Equivalents and Short-term Investments, Fair Value Disclosure Company Selected Measure Name Company Selected Measure Name Cash, Cash Equivalent, and Restricted Cash Restrictions on Cash and Cash Equivalents [Table Text Block] Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Medium-Term Note Medium-Term Note [Member] Accrued expenses, income taxes and warranty Increase (Decrease) in Other Accrued Liabilities Changes in unrecognized tax benefits Effective Income Tax Rate Reconciliation, Tax Contingency, Percent Credit Facility [Domain] Credit Facility [Domain] OPERATING ACTIVITIES Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Supplier Finance Program, Obligation, Statement of Financial Position [Extensible Enumeration] Supplier Finance Program, Obligation, Statement of Financial Position [Extensible Enumeration] Non-U.S. Income (Loss) from Continuing Operations before Income Taxes, Foreign Vendor receivables Other Receivables, Net, Current Dividends payable Dividends Payable, Current Performance Awards Market Condition Performance Awards Market Condition [Member] Performance awards granted to employees under the share-based compensation arrangement, subject to market-based conditions and attaining the service criteria. Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Recorded Unconditional Purchase Obligation [Table] Recorded Unconditional Purchase Obligation [Table] U.S. Federal Internal Revenue Service (IRS) [Member] Useful life in years Property, Plant, and Equipment, Useful Life Schedule of Other Current Assets Schedule of Other Current Assets [Table Text Block] Disposal Group Name [Domain] Disposal Group Name [Domain] Other assets Deferred Tax Assets, Other Total Deferred Deferred Income Taxes and Tax Credits Net operating loss carryforwards Operating Loss Carryforwards Percentage of options to be vested on first anniversary of vesting commencement date (as a percent) Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage Tax Credit Carryforward, Amount, Not Subject To Expiration Tax Credit Carryforward, Amount, Not Subject To Expiration Tax Credit Carryforward, Amount, Not Subject To Expiration Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Other assets and liabilities Operating inflow Increase (Decrease) in Other Operating Assets and Liabilities, Net Operating Lease, Payments Operating Lease, Payments Deferred tax assets Components of Deferred Tax Assets [Abstract] Award Timing Predetermined Award Timing Predetermined [Flag] Lessee, Operating Lease, Liability, Payments, Due after Rolling Year Five Lessee, Operating Lease, Liability, to be Paid, after Rolling Year Five Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Share-based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Quoted Prices in Active Markets for Identical Instruments (Level 1) Fair Value, Inputs, Level 1 [Member] Customer 2 Customer 2 [Member] Customer 2 Effective Tax Rate Effective Income Tax Rate Reconciliation, Percent Financial Instruments Remeasurement Fair Value of Financial Instruments, Policy [Policy Text Block] Employee equity award plans Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Repurchases of ordinary shares Capped calls related to the issuance of exchangeable notes Stock Repurchased and Retired During Period, Value Net unrealized (losses) gains arising during the period Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax Preferred shares, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Depreciation Expense Depreciation Vesting [Domain] Vesting [Domain] Plan Name [Domain] Plan Name [Domain] Scenario [Domain] Scenario [Domain] Operating lease, ROU asset Operating Lease, Right-of-Use Asset Concentration Risk Type [Domain] Concentration Risk Type [Domain] Intevac, Inc. Intevac, Inc. [Member] Intevac, Inc. Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Income tax holiday tax incentive income tax benefits per share (in dollars per share) Income Tax Holiday, Income Tax Benefits Per Share Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Dividends to shareholders Payments of Ordinary Dividends, Common Stock Expiration Date Trading Arrangement Expiration Date Non-U.S.  Current Foreign Tax Expense (Benefit) 2030 Long-Term Debt, Maturity, Year Four Disposal Group, Including Discontinued Operations [Line Items] Disposal Group, Including Discontinued Operations [Line Items] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Net income per share attributable to Seagate Technology plc ordinary shareholders: Earnings Per Share Reconciliation [Abstract] Current portion of holdback amount Disposal Group, Including Discontinued Operation, Consideration, Indemnification Receivable, Current Disposal Group, Including Discontinued Operation, Consideration, Indemnification Receivable, Current INVESTING ACTIVITIES Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Entity Voluntary Filers Entity Voluntary Filers Internal Re-organization Effective Income Tax Rate Reconciliation, Other Adjustments, Internal Re-organization, Amount Effective Income Tax Rate Reconciliation, Other Adjustments, Internal Re-organization, Amount Unrecognized compensation cost Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Document Financial Statement Error Correction [Flag] Document Financial Statement Error Correction [Flag] Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Per share weighted average price of shares purchased (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Per Share Weighted Average Price of Shares Purchased Interest Rate Swap Interest Rate Swap [Member] Property, Equipment and Leasehold Improvements Property, Plant, and Equipment [Policy Text Block] Debt Debt Disclosure [Text Block] Scenario [Axis] Scenario [Axis] Disposal Group Classification [Domain] Disposal Group Classification [Domain] Debt Issuance Costs, Net Debt issuance costs Debt Issuance Costs, Net Divesture Mergers, Acquisitions and Dispositions Disclosures [Text Block] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Government Assistance, Type [Axis] Government Assistance, Type [Axis] Total operating expenses Costs and Expenses Thereafter Long-Term Debt, Maturity, after Year Five Stated interest rate (as a percent) Stated interest rate (as a percent) Debt Instrument, Interest Rate, Stated Percentage Dividends to shareholders Dividends, Common Stock, Cash Total Shareholders’ Equity (Deficit) Total Seagate Technology plc Shareholders' Equity, Starting Balance Total Seagate Technology plc Shareholders' Equity, Ending Balance Equity, Attributable to Parent NOL subject to annual limitation on use Net Operating Losses Subject to Annual Limitation on Use The amount of net operating losses (NOL) subject to an annual limitation on the use to reduce future taxable income. Disposal Group, Disposed of by Sale, Not Discontinued Operations Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] ASSETS Assets [Abstract] Research credit Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount Swing Line Loans Swing Line Loans [Member] Swing Line Loans Insider Trading Policies and Procedures [Line Items] Nonvested share activity Schedule of Nonvested Share Activity [Table Text Block] SoC Operations SoC Operations [Member] SoC Operations Performance Shares Performance Shares [Member] Deferred income taxes Deferred Income Tax Expense (Benefit) Balance Sheet Information Supplemental Balance Sheet Disclosures [Text Block] Other Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Amount Net tangible assets acquired Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Tangible Assets, Net Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Tangible Assets, Net Revenue from external customers and long-lived assets Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items] Potential common shares excluded from the computation of diluted net income (loss) per share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Auditor Location Auditor Location Entity Central Index Key Entity Central Index Key Less: accumulated depreciation and amortization Property, Plant, and Equipment, Accumulated Depreciation, Depletion, and Amortization Ordinary shares and additional paid-in capital Additional Paid in Capital, Common Stock 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] Provision at statutory rate Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Unsecured Senior Notes Issued By Seagate HDD Cayman Unsecured Senior Notes Issued By Seagate HDD Cayman [Member] Unsecured Senior Notes Issued By Seagate HDD Cayman Legal, Environmental and Other Contingencies Legal Matters and Contingencies [Text Block] Net gain from termination of interest rate swap Gain (Loss) On Termination Of Interest Rate Swap, Net Gain (Loss) On Termination Of Interest Rate Swap, Net Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] intellectual property indemnification obligations intellectual property indemnification obligations intellectual property indemnification obligations Other foreign jurisdictions Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential And Other Foreign Tax Rate Impacts, Percent Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential And Other Foreign Tax Rate Impacts, Percent Schedule of Provision For (Benefits From) Income Taxes Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract] Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract] Other accrued expenses Other Liabilities, Miscellaneous, Noncurrent Other Liabilities, Miscellaneous, Noncurrent Summary of Operations by Geographic Area Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Table Text Block] Accumulated Other Comprehensive Loss AOCI Attributable to Parent [Member] All Individuals All Individuals [Member] Finished goods Inventory, Finished Goods, Net of Reserves Employee service share-based compensation, nonvested awards, total compensation cost not yet recognized, period for recognition Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Accumulated Other Comprehensive Income (Loss) [Roll Forward] Accumulated Other Comprehensive Income (Loss) [Roll Forward] Accumulated Other Comprehensive Income (Loss) Statement [Line Items] Statement [Line Items] Total Assets Assets Schedule of Deferred Tax Assets and Liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Losses (gains) reclassified into earnings Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax Convertible Debt Convertible Debt [Member] 4.091% Senior Notes due June 2029 Senior Notes 4.091 Percent due June 2029 [Member] Senior Notes 4.091 Percent due June 2029 Weighted average fair value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Interest expense Interest Expense, Nonoperating Equity Securities without Readily Determinable Fair Value, Amount Equity Securities without Readily Determinable Fair Value, Amount Share-based Compensation Share-Based Payment Arrangement [Text Block] Effect of Rates different than statutory Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent Other comprehensive loss before reclassifications OCI, before Reclassifications, Net of Tax, Attributable to Parent PEO PEO [Member] Total future principal payments on short-term and long-term debt Debt, Long-Term and Short-Term, Combined Amount 2028 Long-Term Debt, Maturity, Year Two Prat S. Bhatt [Member] Prat S. Bhatt Other accruals and deferred items Deferred Tax Assets, Tax Deferred Expense, Other Other non-current liabilities Other non-current liabilities Other Liabilities, Noncurrent Other intangible assets Goodwill Goodwill Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Commitments Disclosure [Abstract] Commitments Disclosure [Abstract] -- None. No documentation exists for this element. -- Capitalized research expenses Deferred Tax Assets, Tax Deferred Expense, Capitalized Research Expense Deferred Tax Assets, Tax Deferred Expense, Capitalized Research Expense Changes in unrecognized tax benefits Effective Income Tax Rate Reconciliation, Tax Contingency, Amount Non-current lease liabilities Operating Lease, Liability, Noncurrent Accumulated Deficit Retained Earnings [Member] Unremitted earnings of certain non-U.S. entities Deferred Tax Liabilities, Undistributed Foreign Earnings Money market funds Money Market Funds [Member] Revolving Credit Facility Revolving Credit Facility [Member] Impairment charge Operating Lease, Impairment Loss Fair Value, Policy Fair Value Measurement, Policy [Policy Text Block] Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member] Ordinary shares, outstanding (in shares) Common Stock, Shares, Outstanding Increase (Decrease) in Stockholders' Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Award Timing Disclosures [Line Items] Accumulated Foreign Currency Adjustment Attributable to Parent Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Diluted (in dollars per share) Decrease in diluted earnings per share (in dollars per share) Diluted net income per share (in dollars per share) Earnings Per Share, Diluted Unsecured Senior Notes Issued By Seagate Data Storage Technology Pte. Ltd Unsecured Senior Notes Issued By Seagate Data Storage Technology Pte. Ltd [Member] Unsecured Senior Notes Issued By Seagate Data Storage Technology Pte. Ltd Capitalized Interest Interest Costs Capitalized Accrued employee compensation Increase (Decrease) in Employee Related Liabilities Intangible Asset, Finite-Lived, Amortization Expense Intangible Asset, Finite-Lived, Amortization Expense 9.625% Senior Notes due December 2032 Senior note 5.75 percent due December 2034 [Member] Senior note 5.75 percent due December 2034 [Member] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Share-Based Payment Arrangement [Abstract] Revenue Revenue from Contract with Customer, Excluding Assessed Tax Lessee, Operating Lease, Liability, Payments, Due in Rolling Year Two Lessee, Operating Lease, Liability, to be Paid, Rolling Year Two Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Remaining consideration Disposal Group, Including Discontinued Operation, Consideration, Indemnification Receivable Disposal Group, Including Discontinued Operation, Consideration, Indemnification Receivable Amortized cost, due in 1 to 5 years Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Amortized Cost Construction in progress Construction in Progress [Member] Debt Conversion, Converted Instrument, Shares Issued Debt Conversion, Converted Instrument, Shares Issued Net loss from debt transactions Net loss from debt transactions Gain (Loss) on Repurchase of Debt Instrument Other accrued expenses Other Accrued Liabilities Accrued warranty Product Warranty Accrual, Current Gianluca Romano [Member] Gianluca Romano Debt Instrument, Redemption, Amount Debt Instrument, Redemption, Amount Debt Instrument, Redemption, Amount Full Value Share Awards Full Value Share Awards [Member] Represents the restricted share bonus awards, restricted share units, performance share bonus awards or performance share units. Future principal payments on long-term debt Schedule of Maturities of Long-Term Debt [Table Text Block] Contract with Customer, Sales Channel [Axis] Contract with Customer, Sales Channel [Axis] Other Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Percent Non-U.S. Foreign Income Tax Jurisdiction, Foreign [Member] Auditor Firm ID Auditor Firm ID Income from operations Operating Income (Loss) Non-U.S. Income Tax Paid, Foreign, after Refund Received Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Senior Notes 9.625 Percent due December 2032 2 Senior Notes 9.625 Percent due December 2032 2 [Member] Senior Notes 9.625 Percent due December 2032 2 Shares purchased in period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Purchased for Award Net gains (losses) from investment under measurement alternative Net gains (losses) from investment under measurement alternative Net gains (losses) from investment under measurement alternative Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] 3.125% Senior Notes due July 2029 Senior Notes 5.875 Percent due July 2030 [Member] Senior Notes 5.875 Percent due July 2030 Audit Information [Abstract] Audit Information [Abstract] Accounts receivable, net Increase (Decrease) in Accounts Receivable Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Matching contributions Defined Contribution Plan, Cost Termination Date Trading Arrangement Termination Date Subsequent Events [Abstract] Subsequent Events [Abstract] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Table] Fair Value, Recurring and Nonrecurring [Table] Debt Conversion, Original Debt, Amount Debt Conversion, Original Debt, Amount Acquired identifiable intangible asset, finite-lived, Amount Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived Domestic federal statutory rate (as a percent) Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax Offering period for Stock Purchase Plan (in months) Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period Accrued expenses Accrued expenses, total Accrued Liabilities, Current Entity Public Float Entity Public Float Other Other Countries [Member] Other Countries [Member] Fair Value as of Grant Date Award Grant Date Fair Value Tax credit carryforwards Tax Credit Carryforward, Amount Product warranty period term (in years) Product Warranty Period Term Represents the product warranty term. Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Share Repurchase Program, Remaining Authorized, Amount Share Repurchase Program, Remaining Authorized, Amount Arrangement Duration Trading Arrangement Duration Entity Registrant Name Entity Registrant Name Entity Address, Postal Zip Code Entity Address, Postal Zip Code Basis of Presentation and Summary of Significant Accounting Policies Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount 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] Interest Expense Effective Income Tax Rate Reconciliation, Nondeductible Expense, Interest Expense, Amount Effective Income Tax Rate Reconciliation, Nondeductible Expense, Interest Expense, Amount Outstanding at the beginning of the period Outstanding at the end of the period Supplier Finance Program, Obligation Equity Award [Domain] Award Type [Domain] Fair Value Fair Value Disclosures [Text Block] Significant Unobservable Inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Expected term (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations Geographical [Axis] Geographical [Axis] Concentration of Credit Risk Concentration Risk, Credit Risk, Policy [Policy Text Block] Interest Expense, Debt Interest Expense, Debt Cash, cash equivalents and restricted cash at the beginning of the year Cash, cash equivalents and restricted cash at the end of the year Total cash, cash equivalents, and restricted cash shown in the Statements of Cash Flows Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Non-NEOs Non-NEOs [Member] Schedule of Debt Schedule of Debt [Table Text Block] Customer [Domain] Customer [Domain] Inventories Schedule of Inventory, Current [Table Text Block] Lessee, Operating Leases Lessee, Operating Leases [Text Block] 2027 Long-Term Debt, Maturity, Year One 9.625% Senior Notes due December 2032 Senior Notes 4.125 Percent Due January 2031 1 [Member] Senior Notes 4.125 Percent Due January 2031 Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Repurchases of ordinary shares Payments for Repurchase of Common Stock Range [Axis] Statistical Measurement [Axis] Award Type [Axis] Award Type [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] 3.375% Senior Notes due July 2031 Senior Notes 8.50 percent due July 2031 1 [Member] Senior Notes 8.50 percent due July 2031 1 Accumulated deficit Retained Earnings (Accumulated Deficit) Litigation settlement, number of third-party audits Loss Contingency Settlement Number Of Internal Audits Loss Contingency Settlement Number Of Internal Audits Effects of derivative instruments Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Lessee, Operating Lease, Liability, Payments, Due in Rolling Year Three Lessee, Operating Lease, Liability, to be Paid, Rolling Year Three Schedule of Fiscal Years [Table] Schedule of Fiscal Years [Table] Schedule of Fiscal Years [Table] Common Stock Common Stock [Member] Operating Lease, Cost Operating Lease, Cost Expected dividend rate Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate Derivative Contract Type [Domain] Derivative Contract [Domain] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Total Liabilities and Shareholders’ Equity (Deficit) Liabilities and Equity Variable Lease, Cost Variable Lease, Cost Employee Stock Option Share-Based Payment Arrangement, Option [Member] Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Table] Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Table] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Tabular List, Table Tabular List [Table Text Block] Vesting [Axis] Vesting [Axis] Gain on sale-leaseback transactions Sale and Leaseback Transaction, Gain (Loss), Net Weighted-average volatility Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Weighted Average Volatility Rate Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities Name Awards Close in Time to MNPI Disclosures, Individual Name 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] Depreciation Deferred Tax Liabilities, Depreciation Deferred Tax Liabilities, Depreciation Weighted-average assumptions used to determine the fair value Schedule of Share-based Payment Award, Stock Option and Employee Stock Purchase Plan Valuation Assumptions and Fair Value Disclosures [Table Text Block] Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options and employee stock purchase plans, including, but not limited to: (a) expected term, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. Also includes disclosure of the weighted average fair value of nonvested and performance shares. Property, Plant and Equipment, Type [Domain] Long-Lived Asset, Class [Domain] Government Assistance, Asset, Decrease, Statement of Financial Position [Extensible Enumeration] Government Assistance, Asset, Decrease, Statement of Financial Position [Extensible Enumeration] Senior Notes 4.125 Percent Due January 2031 2 Senior Notes 4.125 Percent Due January 2031 2 [Member] Senior Notes 4.125 Percent Due January 2031 2 Property, Plant, and Equipment [Table] Property, Plant, and Equipment [Table] Adjustment to Compensation: Adjustment to Compensation [Axis] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Cash paid for interest Interest Paid, Excluding Capitalized Interest, Operating Activity Credit Facility [Axis] Credit Facility [Axis] Total assets Assets, Fair Value Disclosure Capped calls related to the issuance of exchangeable notes Adjustments To Additional Paid In Capital, Capped Call Options, Issuance Of Convertible Notes Adjustments To Additional Paid In Capital, Capped Call Options, Issuance Of Convertible Notes Name Measure Name Senior Notes 8.50 percent due July 2031 2 Senior Notes 8.50 percent due July 2031 2 [Member] Senior Notes 8.50 percent due July 2031 2 Pay vs Performance Disclosure [Line Items] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Hierarchy and NAV [Domain] Commitments Commitments Disclosure [Text Block] Deferred tax liabilities Components of Deferred Tax Liabilities [Abstract] Debt Instrument [Line Items] Debt Fair Value Disclosures Debt Instrument [Line Items] U.S.  Income (Loss) from Continuing Operations before Income Taxes, Domestic Additional Paid-in Capital Additional Paid-in Capital [Member] Equipment Equipment [Member] Changes in liability for pre-existing warranties, including expirations Standard Product Warranty Accrual, Increase (Decrease) for Preexisting Warranties Name Trading Arrangement, 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Tax Jurisdiction, Foreign, Other [Member] Weighted-average grant-date fair value, granted (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Accrued warranty Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Warranty Reserves Subsequent Event Type [Domain] Subsequent Event Type [Domain] Payables and Accruals [Abstract] Payables and Accruals [Abstract] Weighted-average grant-date fair value, forfeitures (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] intellectual property indemnification obligations Indemnifications obligations to Officers and Directors Indemnifications obligations to Officers and Directors 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Arrangements All Trading Arrangements [Member] Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Current Fiscal Year End Date Current Fiscal Year End Date Maximum number of shares per offering period Share-based Compensation Arrangement by Share-based Payment Award, Maximum Number of Shares Per Offering Period Represents the maximum number of shares to be issued under the Stock Purchase Plan per offering period. 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(Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Property, equipment and leasehold improvements Property, Plant, and Equipment, before Accumulated Depreciation, Depletion, and Amortization Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Senior note 3.50 percent due June 2028 Senior note 3.50 percent due June 2028 [Member] Senior note 3.50 percent due June 2028 Executive Category: Executive Category [Axis] LIABILITIES AND SHAREHOLDERS’ EQUITY (DEFICIT) Liabilities and Equity [Abstract] Inventories, net Total Inventory Inventory, Net Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Movement in Standard Product Warranty Accrual [Roll Forward] Movement in Standard Product Warranty Accrual [Roll Forward] Gains reclassified into earnings Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax Supplemental Disclosure of Cash Flow Information 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Allowance for Credit Loss Documents Incorporated by Reference Documents Incorporated by Reference [Text Block] UNITED KINGDOM UNITED KINGDOM Senior Notes 3.375 Percent due July 2031 2 Senior Notes 3.375 Percent due July 2031 2 [Member] Senior Notes 3.375 Percent due July 2031 2 Concentration risk, percentage of revenue Concentration Risk, Percentage Equity Awards Adjustments Equity Awards Adjustments [Member] Total net deferred tax assets Total net deferred tax assets Deferred Tax Assets, Net Plan Name [Axis] Plan Name [Axis] Income Tax Jurisdiction [Domain] Income Tax Jurisdiction [Domain] Legal settlement Loss Contingency Accrual, Loss (Reversal of Loss) Other, net Other Nonoperating Income (Expense) Accrued Expenses Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] STX 2012 EIP Equity Incentive Plan 2012 [Member] Represents the Seagate Technology plc 2012 Equity Incentive Plan. 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