Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Number of shares used in per share calculations: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Trading Arrangement: Trading Arrangement [Axis] Senior Unsecured Revolving Credit Facility Senior Unsecured Revolving Credit Facility [Member] Senior Unsecured Revolving Credit Facility Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Capped Call Transaction Capped Call Transaction [Member] Capped Call Transaction Title of 12(b) Security Title of 12(b) Security Subsequent event Subsequent Event [Member] Reported Value Measurement Carrying Amount Reported Value Measurement [Member] Document Fiscal Year Focus Document Fiscal Year Focus Adjustment to Compensation, Amount Adjustment to Compensation Amount Commitments Disclosure [Abstract] Commitments Disclosure [Abstract] -- None. No documentation exists for this element. -- Segment Reporting [Abstract] Segment Reporting [Abstract] Taxes paid related to net share settlement of equity awards Payment, Tax Withholding, Share-Based Payment Arrangement Accrued employee compensation Employee-related Liabilities, Current Litigation settlement, amount accrued Loss Contingency Accrual Restatement Determination Date Restatement Determination Date 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 Amendment Flag Amendment Flag Current liabilities: Liabilities, Current [Abstract] Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Swing Line Loans Swing Line Loans [Member] Swing Line Loans Unrecorded Unconditional Purchase Obligation, Due within Five Years Unrecorded Unconditional Purchase Obligation, to be Paid, Year Five Litigation Settlement, Amount Paid By Insurance Litigation Settlement, Amount Paid By Insurance Litigation Settlement, Amount Paid By Insurance Leases [Abstract] Leases [Abstract] Pratik Bhatt [Member] Pratik Bhatt Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Schedule of Cash and Cash Equivalents Schedule of Cash and Cash Equivalents [Table Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Ordinary shares, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Assets: Assets, Fair Value Disclosure [Abstract] Derivative notional amount Derivative, Notional Amount Basic (in shares) Total shares for purposes of calculating basic net income per share attributable to Seagate Technology plc Weighted Average Number of Shares Outstanding, Basic Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Total current liabilities Liabilities, Current Schedule of Investments [Abstract] Work-in-process Inventory, Work in Process, Net of Reserves The Netherlands NETHERLANDS Entity Address, City or Town Entity Address, City or Town Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Litigation settlement, number of third-party audits Loss Contingency Settlement Number Of Internal Audits Loss Contingency Settlement Number Of Internal Audits Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return 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] Line of credit facility, maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Other comprehensive loss Other Comprehensive Income (Loss), Net of Tax Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Current portion of long-term debt Current portion of long-term debt Less: current portion of long-term debt, net of debt issuance costs Long-Term Debt, Current Maturities United States UNITED STATES Subsequent Event Type [Axis] Subsequent Event Type [Axis] Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Recent Accounting Pronouncements and Recently Issued Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Other comprehensive loss, net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Debt, net of debt issuance costs Long-Term Debt Document Period End Date Document Period End Date Changes in operating assets and liabilities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Net cash used in investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Unrecognized tax benefits Unrecognized Tax Benefits Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Aggregate principal amount Debt Instrument, Face Amount Shareholders' Equity Equity [Text Block] Security Exchange Name Security Exchange Name James C. Lee [Member] James C. Lee Recorded Unconditional Purchase Obligation [Line Items] Recorded Unconditional Purchase Obligation [Line Items] Fiscal Year Fiscal Period, Policy [Policy Text Block] Convertible Debt Convertible Debt Unrecorded Unconditional Purchase Obligation, Due within Two Years Unrecorded Unconditional Purchase Obligation, to be Paid, Year Two Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Shell Company Entity Shell Company Singapore SINGAPORE Schedule of Product Warranty Liability Schedule of Product Warranty Liability [Table Text Block] Property, Equipment and Leasehold Improvements, net Property, Plant, and Equipment [Table Text Block] Earnings Per Share Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Repairs and replacements Standard Product Warranty Accrual, Decrease for Payments Net income per share: Earnings Per Share [Abstract] Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] 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 Geographical [Domain] Geographical [Domain] Acquisition of property, equipment and leasehold improvements Payments to Acquire Property, Plant, and Equipment Debt Instrument, Leverage, Period Two Debt Instrument, Leverage, Period Two [Member] Debt Instrument, Leverage, Period Two 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] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Litigation settlement payments, quarterly installments amount Loss Contingency Settlement Quarterly Installments Amount Loss Contingency Settlement Quarterly Installments Amount Company Selected Measure Name Company Selected Measure Name Gain (Loss) from Litigation Settlement Gain (Loss) from Litigation Settlement 8.25% Senior Notes due December 2029 Senior Notes 8.25 Percent due December 2029 [Member] Senior Notes 8.25 Percent due December 2029 Cash, Cash Equivalent, and Restricted Cash Restrictions on Cash and Cash Equivalents [Table Text Block] Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Unrecorded Unconditional Purchase Obligation, Due within Three Years Unrecorded Unconditional Purchase Obligation, to be Paid, Year Three Weighted-average effect of dilutive securities: Weighted Average Number of Shares Outstanding, Diluted, Adjustment [Abstract] Medium-Term Note Medium-Term Note [Member] 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. Long-Term Debt, Gross Long-Term Debt, Gross Accrued expenses, income taxes and warranty Increase (Decrease) in Other Accrued Liabilities Credit Facility [Domain] Credit Facility [Domain] OPERATING ACTIVITIES Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Vendor receivables Other Receivables, Net, Current Starting balance (in shares) Ending balance (in shares) Shares, Issued Compensation Amount Outstanding Recovery Compensation Amount Dividends Payable, Current Dividends Payable, Current Individual: Individual [Axis] Diluted (in shares) Total shares for purpose of calculating diluted net income per share attributable to Seagate Technology plc Weighted Average Number of Shares Outstanding, Diluted Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Entity Emerging Growth Company Entity Emerging Growth Company Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Recorded Unconditional Purchase Obligation [Table] Recorded Unconditional Purchase Obligation [Table] Schedule of Other Current Assets Schedule of Other Current Assets [Table Text Block] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Distributors Distributors [Member] Distributors [Member] Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Gianluca Romano [Member] Gianluca Romano Other assets and liabilities Increase (Decrease) in Other Operating Assets and Liabilities, Net Award Timing Predetermined Award Timing Predetermined [Flag] Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] APIC, Share-Based Payment Arrangement, Increase for Cost Recognition 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] 4.125% Senior Notes due January 2031 Senior Notes 4.125 Percent Due January 2031 [Member] Senior Notes 4.125 Percent Due January 2031 Employee equity award plans Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements 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 All Executive Categories All Executive Categories [Member] Repurchases of ordinary shares Dollar value of shares repurchased during the period Stock Repurchased and Retired During Period, Value Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Preferred shares, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Debt Instrument, Redemption, Gain (Loss) Debt Instrument, Redemption, Gain (Loss) Debt Instrument, Redemption, Gain (Loss) Scenario [Domain] Scenario [Domain] 9.625% Senior Notes due December 2032 Senior Notes 9.625 Percent due December 2032 [Member] Senior Notes 9.625 Percent due December 2032 Schedule of computation of basic and diluted net income (loss) per share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Business Segment Segment Reporting [Text Block] 3.125% Senior Notes due July 2029 Senior Notes 3.125 Percent due July 2029 [Member] Senior Notes 3.125 Percent due July 2029 Dividends to shareholders Payments of Ordinary Dividends, Common Stock Expiration Date Trading Arrangement Expiration Date 2030 Long-Term Debt, Maturity, Year Four Balance, beginning of period Balance, end of period Standard Product Warranty Accrual Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Gain Contingencies [Table] Gain Contingencies [Table] 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] 8.50% Senior Notes due July 2031 Senior Notes 8.50 percent due July 2031 [Member] Senior Notes 8.50 percent due July 2031 Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Debt Instrument, Leverage, Period [Axis] Debt Instrument, Leverage, Period [Axis] Debt Instrument, Leverage, Period Ordinary shares, authorized (in shares) Common Stock, Shares Authorized Net income per share attributable to Seagate Technology plc ordinary shareholders: Earnings Per Share Reconciliation [Abstract] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Schedule of Carrying Values and Estimated Fair Values of Debt Instruments Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block] Exercise Price Award Exercise Price INVESTING ACTIVITIES Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Recurring basis Fair Value, Recurring [Member] Document Quarterly Report Document Quarterly Report Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Thereafter Long-Term Debt, Maturity, After Year Four Long-Term Debt, Maturity, After Year Four Debt Debt Disclosure [Text Block] Scenario [Axis] Scenario [Axis] Redemption and repurchase of debt Repayments of long-term debt Repayments of Long-Term Debt Debt Issuance Costs, Net Debt issuance costs Debt Issuance Costs, Net Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Equity Component [Domain] Equity Component [Domain] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Total operating expenses Costs and Expenses Adoption Date Trading Arrangement Adoption Date 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 Starting balance Ending balance Equity Equity, Attributable to Parent Other expense, net Nonoperating Income (Expense) Debt Instrument, Leverage, Period [Domain] Debt Instrument, Leverage, Period [Domain] Debt Instrument, Leverage, Period [Domain] ASSETS Assets [Abstract] Title Trading Arrangement, Individual Title Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Debt Instrument, Redemption, Amount Debt Instrument, Redemption, Amount Debt Instrument, Redemption, Amount Accounting Policies [Abstract] Accounting Policies [Abstract] Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Insider Trading Policies and Procedures [Line Items] Other financing activities, net Proceeds from (Payment for) Other Financing Activity Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Long-term accrued income taxes Accrued Income Taxes, Noncurrent Deferred income taxes Deferred Income Tax Expense (Benefit) Marketing and administrative Selling, General and Administrative Expense Balance Sheet Information Supplemental Balance Sheet Disclosures [Text Block] Letter of Credit Letter of Credit [Member] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] 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 Operating segment Number of Operating Segments 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 All Adjustments to Compensation All Adjustments to Compensation [Member] 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 operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Legal, Environmental and Other Contingencies Legal Matters and Contingencies [Text Block] Remainder of 2027 Long-Term Debt, Maturity, Remainder of Fiscal Year Income Statement [Abstract] Income Statement [Abstract] Seagate Technology plc shareholders' equity: Equity, Attributable to Parent [Abstract] Document Transition Report Document Transition Report Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Other assets, net Deferred Income Tax Assets, Net Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] City Area Code City Area Code Restructuring and other, net Restructuring Expense (Benefit) Restructuring Expense (Benefit) Accumulated Other Comprehensive Loss AOCI Attributable to Parent [Member] All Individuals All Individuals [Member] Subsequent Events Subsequent Events [Text Block] Litigation settlement amount Loss Contingency Settlement Amount Loss Contingency Settlement Amount Name Forgone Recovery, Individual Name Finished goods Inventory, Finished Goods, Net of Reserves Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Statement [Line Items] Statement [Line Items] Total Assets Assets Tax Adjustments, Settlements, and Unusual Provisions Tax Adjustments, Settlements, and Unusual Provisions Retailers Retail [Member] Preferred Stock, Shares Issued Preferred Stock, Shares Issued Convertible Debt Convertible Debt [Member] Interest expense Interest Expense, Nonoperating Long-term Purchase Commitment, Category of Item Purchased [Domain] Long-Term Purchase Commitment, Category of Item Purchased [Domain] Warranties issued Standard Product Warranty Accrual, Increase for Warranties Issued Significant Accounting Policies Policy Text Block [Abstract] 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 Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] Number of shares repurchased, during the period (in shares) Stock Repurchased and Retired During Period, Shares Measurement Basis [Axis] Measurement Basis [Axis] Other non-current liabilities Other non-current liabilities Other Liabilities, Noncurrent Other intangible assets Goodwill Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount 3.375% Senior Notes due July 2031 Senior Notes 3.375 Percent due July 2031 [Member] Senior Notes 3.375 Percent due July 2031 Subsequent Event Type [Domain] Subsequent Event Type [Domain] Payables and Accruals [Abstract] Payables and Accruals [Abstract] Non-current lease liabilities Operating Lease, Liability, Noncurrent Accumulated Deficit Retained Earnings [Member] Money market funds Money Market Funds [Member] Revolving Credit Facility Revolving Credit Facility [Member] Fair Value, Policy Fair Value Measurement, Policy [Policy Text Block] Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] 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] Diluted (in dollars per share) Diluted net income per share (in dollars per share) Earnings Per Share, Diluted Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Entity Current Reporting Status Entity Current Reporting Status Net cash used in financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Total Shareholder Return Amount Total Shareholder Return Amount Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation Liabilities: Liabilities, Fair Value Disclosure [Abstract] Accrued employee compensation Increase (Decrease) in Employee Related Liabilities Product development Research and Development Expense 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] 2029 Long-Term Debt, Maturity, Year Three FINANCING ACTIVITIES Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Revenue Revenue from Contract with Customer, Excluding Assessed Tax Property, equipment and leasehold improvements, net Total property, equipment and leasehold improvements, net Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization Numerator: Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Derivative asset Derivative Asset Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Underlying Securities Award Underlying Securities Amount Estimate of Fair Value Measurement Estimate of Fair Value Measurement [Member] Revenue Revenue from Contract with Customer [Text Block] Derivative Asset, Statement of Financial Position [Extensible Enumeration] Derivative Asset, Statement of Financial Position [Extensible Enumeration] Proceeds from issuance of ordinary shares under employee stock plans Proceeds, Issuance of Shares, Share-Based Payment Arrangement, Including Option Exercised Capped call transaction (in usd per share) Capped Call Transaction, Price Per Share Capped Call Transaction, Price Per Share Inventories, net Increase (Decrease) in Inventories Shares issued for debt conversion (in shares) Debt Conversion, Converted Instrument, Shares Issued Net loss from debt transactions Gain (Loss) on Repurchase of Debt Instrument Other accrued expenses Other Accrued Liabilities Accrued warranty Product Warranty Accrual, Current 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] Guarantees [Abstract] Guarantees [Abstract] Other current assets Total Other Assets, Current 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] Income from operations Operating Income (Loss) Current Fiscal Year End Date Current Fiscal Year End Date Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Convertible Senior note 3.50 percent due June 2028 Convertible Senior note 3.50 percent due June 2028 [Member] Convertible Senior note 3.50 percent due June 2028 Litigation settlement, number of internal audits Litigation Settlement, Number Of Internal Audits Litigation Settlement, Number Of Internal Audits 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] Common stock, dividends, per share, declared (in dollars per share) Cash dividends declared per ordinary share (in dollars per share) Common Stock, Dividends, Per Share, Declared Entity File Number Entity File Number Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Issuance of ordinary shares under employee stock plans Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Gain Contingencies [Line Items] Gain Contingencies [Line Items] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Current and noncurrent debt including short-term borrowings Senior Notes Measure: Measure [Axis] Equity Components [Axis] Equity Components [Axis] Equity Components [Axis] Accounts receivable, net Increase (Decrease) in Accounts Receivable Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] 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 Entity Interactive Data Current Entity Interactive Data Current New Credit Agreement New Credit Agreement [Member] New Credit Agreement Q3'25 Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Entity Small Business Entity Small Business Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent 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] Converted debt Debt Conversion, Original Debt, Amount 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] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Guarantees Product Warranty Disclosure [Text Block] Total Assets Other Assets, Noncurrent Document Type Document Type Assets and liabilities measured at fair value on a recurring basis Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Net loss from debt transactions Gain (Loss) on Extinguishment of Debt Accrued expenses Accrued expenses, total Accrued Liabilities, Current Fair Value as of Grant Date Award Grant Date Fair Value Other current assets Other Assets, Miscellaneous, Current 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 Litigation settlement, number of audits Loss Contingency Settlement Number Of Audits Loss Contingency Settlement Number Of Audits Subsequent Event [Line Items] Subsequent Event [Line Items] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Local Phone Number Local Phone Number Deferred contract liabilities Contract with Customer, Liability, Noncurrent 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] Income before income taxes 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] Revenue Revenues 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] Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount OEMs OEMs [Member] OEMs [Member] Executive Category: Executive Category [Axis] BIS settlement penalty Increase (Decrease) In Accrual For Loss Contingency Increase (Decrease) In Accrual For Loss Contingency LIABILITIES AND SHAREHOLDERS’ EQUITY Liabilities and Equity [Abstract] 4.091% Senior Notes due June 2029 Senior Notes 4.091 Percent due June 2029 [Member] Senior Notes 4.091 Percent due June 2029 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] Supplier Finance Program, Obligation Supplier Finance Program, Obligation Inventories, net Total Inventory Inventory, Net All Award Types Award Type [Domain] Other accrued expenses Other Liabilities, Miscellaneous, Noncurrent Other Liabilities, Miscellaneous, Noncurrent Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Fair Value Fair Value Disclosures [Text Block] Movement in Standard Product Warranty Accrual [Roll Forward] Movement in Standard Product Warranty Accrual [Roll Forward] Significant Unobservable Inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Debt Instrument, Covenant, Leverage Ratio, Minimum Debt Instrument, Covenant, Leverage Ratio, Minimum Debt Instrument, Covenant, Leverage Ratio, Minimum PEO Name PEO Name Geographical [Axis] Geographical [Axis] Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Entity Tax Identification Number Senior Notes 5.875 Percent due July 2030 Senior Notes 5.875 Percent due July 2030 [Member] Senior Notes 5.875 Percent due July 2030 Cash, cash equivalents and restricted cash at the beginning of the period Cash, cash equivalents and restricted cash at the end of the period 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 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] Inventories Inventories [Member] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [Member] Restricted cash included in Other current assets Restricted cash and cash equivalents, current Restricted Cash and Cash Equivalent, Current 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] Fair Value, Measurement Frequency [Domain] Measurement Frequency [Domain] Debt Instrument [Axis] Debt Instrument [Axis] Subsequent Event [Table] Subsequent Event [Table] Share-based compensation Share-Based Payment Arrangement, Noncash Expense Schedule of Debt Schedule of Debt [Table Text Block] Conversion of Exchangeable Senior Notes (in shares) Stock Issued During Period, Shares, Conversion of Convertible Securities Inventories Schedule of Inventory, Current [Table Text Block] Long-Term Debt, Maturity, Year One Long-Term Debt, Maturity, Year One Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Basic (in dollars per share) Basic net income per share (in dollars per share) Earnings Per Share, Basic Payments for Repurchase of Common Stock Payments for Repurchase of Common Stock Total current assets Assets, Current Insider Trading Arrangements [Line Items] Long-term debt, less current portion Long-term debt, less current portion, net of debt issuance costs Long-Term Debt, Excluding Current Maturities Award Type Award Type [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Accounts receivable, net Accounts Receivable, after Allowance for Credit Loss, Current Accumulated deficit Retained Earnings (Accumulated Deficit) Effects of derivative instruments 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] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Common Stock Common Stock [Member] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover [Abstract] Derivative Contract Type [Domain] Derivative Contract [Domain] Equity Awards Adjustments Equity Awards Adjustments [Member] Total Liabilities and Shareholders’ Equity Liabilities and Equity Employee Stock Option Share-Based Payment Arrangement, Option [Member] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Tabular List, Table Tabular List [Table Text Block] BIS settlement penalty 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] Name Awards Close in Time to MNPI Disclosures, Individual Name Shareholders’ Equity: Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Entity Address, Country Entity Address, Country 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] Conversion of Exchangeable Senior Notes Stock Issued During Period, Value, Conversion of Convertible Securities Preferred shares, authorized (in shares) Preferred Stock, Shares Authorized 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 Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Credit Facility [Axis] Credit Facility [Axis] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Total assets Assets, Fair Value Disclosure 5.75% Senior Notes due December 2034 Senior note 5.75 percent due December 2034 [Member] Senior note 5.75 percent due December 2034 [Member] 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 non-cash operating activities, net Other Noncash Income (Expense) Litigation Settlement, Escrow Amount Litigation Settlement, Escrow Amount Litigation Settlement, Escrow Amount Commitments Commitments Disclosure [Text Block] Debt Instrument [Line Items] Debt Fair Value Disclosures Debt Instrument [Line Items] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Additional Paid-in Capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Kian Fatt Chong [Member] Kian Fatt Chong 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 Changes in liability for pre-existing warranties, including expirations Standard Product Warranty Accrual, Increase (Decrease) for Preexisting Warranties Name Trading Arrangement, Individual Name Cash and cash equivalents Cash and Cash Equivalent Raw materials and components Inventory, Raw Materials, Net of Reserves Company Selected Measure Amount Company Selected Measure Amount Investments, Debt and Equity Securities [Abstract] Investments, Debt and Equity Securities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization Long-term accrued warranty Product Warranty Accrual, Noncurrent Unrecorded Unconditional Purchase Obligation, Due within Four Years Unrecorded Unconditional Purchase Obligation, to be Paid, Year Four Issuance of ordinary shares under employee stock plans (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Contract with Customer, Sales Channel [Domain] Contract with Customer, Sales Channel [Domain] Current assets: Assets, Current [Abstract] Litigation settlement, number of years of payment Loss Contingency Settlement Terms Period Of Payments Loss Contingency Settlement Terms Period Of Payments Non-PEO NEO Non-PEO NEO [Member] Senior Notes Senior Notes [Member] Entity Address, Address Line One Entity Address, Address Line One Income tax expense (benefit) Provision for income taxes Income Tax Expense (Benefit) Cost of revenue Cost of Product and Service Sold Award Timing Method Award Timing Method [Text Block] Basis of Presentation and Consolidation Consolidation, Policy [Policy Text Block] (Decrease) Increase in cash, cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Forecast Forecast [Member] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Accumulated Other Comprehensive Income (Loss) [Abstract] Accumulated Other Comprehensive Income (Loss) [Abstract] Accumulated Other Comprehensive Income (Loss) [Abstract] Disclosure Text Block Supplement [Abstract] Disclosure Text Block Supplement [Abstract] Net income Net income Net Income (Loss) Attributable to Parent Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Location, Statement of Financial Position, Balance [Axis] Location, Statement of Financial Position, Balance [Axis] Statement [Table] Statement [Table] 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 Restatement Determination Date: Restatement Determination Date [Axis] Leverage ratio, maximum Debt Instrument, Covenant, Leverage Ratio, Maximum Debt Instrument, Covenant, Leverage Ratio, Maximum Interest income Investment Income, Interest Litigation Settlement, Amount Awarded to Other Party Litigation Settlement, Amount Awarded to Other Party Establishment of Warranty Accruals Standard Product Warranty, Policy [Policy Text Block] Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Category of Item Purchased [Axis] Category of Item Purchased [Axis] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block]