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current Contract With Customer, Liability, Percent, Increase (Decrease), Current Contract With Customer, Liability, Percent, Increase (Decrease), Current Restructuring Restructuring and Related Activities Disclosure [Text Block] Assets Assets, Fair Value Disclosure Included in net income attributable to noncontrolling interest Costs and Expenses, Related Party Attributable to Controlling Interest Costs and Expenses, Related Party Attributable to Controlling Interest Name Measure Name Schedule of Earnings Per Share, Basic and Diluted [Table] Schedule of Earnings Per Share, Basic and Diluted [Table] Schedule of Earnings Per Share, Basic and Diluted [Table] Pay vs Performance Disclosure [Line Items] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Hierarchy and NAV [Domain] Additional Paid-In Capital Additional Paid-in Capital [Member] Proceeds from sale of intangible assets Proceeds from Sale of Intangible Assets Naming Rights Naming Rights [Member] Naming Rights Increase in size of stock repurchase program Stock Repurchase Program, Authorized Amount, Additional Stock Repurchase Program, Authorized Amount, Additional Name Trading Arrangement, Individual Name Cash and cash equivalents Cash and Cash Equivalent Company Selected Measure Amount Company Selected Measure Amount Segment Reporting, Reconciliation of Profit (Loss) by Segment to Consolidated Segment Reporting, Reconciliation of Profit (Loss) by Segment to Consolidated [Table Text Block] Related party rent expense: Related Party Transactions, Rent Expense [Abstract] Related Party Transactions, Rent Expense [Abstract] Weighted Average Remaining Contractual Life, Options vested and expected to vest at end of period Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term Unrecognized tax benefits if recognized, would affect our effective tax rate Unrecognized Tax Benefits that Would Impact Effective Tax Rate Potential common shares from ESPP (in shares) Incremental Common Shares Attributable To Employee Stock Purchase Plan Incremental Common Shares Attributable To Employee Stock Purchase Plan Non-PEO NEO Non-PEO NEO [Member] Thereafter Lessee, Operating Lease, Liability, To Be Paid, After Year Four Lessee, Operating Lease, Liability, To Be Paid, After Year Four Purchase period Share-based Compensation Arrangement by Share-based Payment Award, Purchase Period Share-based Compensation Arrangement by Share-based Payment Award, Purchase Period Cost of revenue Cost of Product and Service Sold SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] Award Timing Method Award Timing Method [Text Block] Net increase/(decrease) 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] Net income attributable to Dolby Laboratories, Inc. Net income attributable to Dolby Laboratories, Inc. Net Income (Loss) Attributable to Parent Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Location, Statement of Financial Position, Balance [Axis] Location, Statement of Financial Position, Balance [Axis] Restatement Determination Date: Restatement Determination Date [Axis] Stockholders' Equity And Stock-Based Compensation [Line Items] Stockholders' Equity And Stock-Based Compensation [Line Items] Stockholders' Equity And Stock-Based Compensation [Line Items] Schedule of Accumulated Other Comprehensive Income (Loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Schedule of Stock Repurchase Activity Schedule of Stock Repurchase Activity [Table Text Block] Schedule of Stock Repurchase Activity [Table Text Block] Weighted Average Exercise Price, Options exercisable (in usd per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price Schedule Of Prepaid Expenses And Other Current Assets Schedule of Other Assets [Table Text Block] Contract assets Contract with Customer, Asset, before Allowance for Credit Loss Revenue: Revenues [Abstract] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Weighted-average shares outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Range [Domain] Statistical Measurement [Domain] Document Fiscal Year Focus Document Fiscal Year Focus Expected timing of satisfaction period Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Revenue adjustment Contract with Customer, Liability, Change in Timeframe, Performance Obligation Satisfied, Revenue Recognized Total stock-based compensation, net of tax Share-Based Payment Arrangement, Expense, after Tax Shares Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Due in 1 to 2 years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Two Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Two Common stock Common Stock, Value, Issued Fiscal 2027 Lessee, Operating Lease, Liability, to be Paid, Year One Summary Of Restricted Stock Units Issued To Officers, Directors And Employees Under 2005 Stock Incentive Plan Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Restatement Determination Date Restatement Determination Date Trade accounts receivable Trade Accounts Receivable Trade Accounts Receivable Weighted Average Exercise Price, Options vested and expected to vest (in usd per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Long-term investments: Long-Term Investments [Abstract] Amendment Flag Amendment Flag Current liabilities: Liabilities, Current [Abstract] Provision for credit losses Accounts Receivable, Credit Loss Expense (Reversal) Donation commitments, Fiscal 2028 Unrecorded Unconditional Donation Obligation, Due within Four Years Unrecorded Unconditional Donation Obligation, Due within Four Years Total, due in Fiscal 2028 total operating leases and purchase obligations due in four years Total operating leases and purchase obligations due in four years. Debt Securities, Available-for-sale Debt Securities, Available-for-Sale [Table Text Block] Loss Contingencies [Table] Loss Contingencies [Table] Change (%) Change In Contract With Customer, Assets And Liabilities Percent [Abstract] Change In Contract With Customer, Assets And Liabilities Percent [Abstract] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Property, Plant, and Equipment [Abstract] Property, Plant, and Equipment [Abstract] Entity Address, State or Province Entity Address, State or Province PEO Total Compensation Amount PEO Total Compensation Amount Currency translation adjustments gains/(losses), net of tax benefit/(expense) of $0, $0, $0, and $0 Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Composition Of Financial Statements [Table] Composition Of Financial Statements [Table] Composition Of Financial Statements [Table] Share Repurchase Program [Domain] Share Repurchase Program [Domain] Basic (in shares) Weighted average shares outstanding-basic (in shares) Weighted Average Number of Shares Outstanding, Basic Indemnification asset, expected settlement, period Indemnification Asset, Expected Settlement, Period Indemnification Asset, Expected Settlement, Period Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Loss Contingencies [Line Items] Loss Contingencies [Line Items] Fiscal 2030 Lessee, Operating Lease, Liability, to be Paid, Year Four Additional Stock Approved [Member] Additional Stock Approved [Member] Additional Stock Approved [Member] Term of agreement Unrecorded Unconditional Obligation, Term of Agreement Unrecorded Unconditional Obligation, Term of Agreement Pending Litigation Pending Litigation [Member] Derivative Financial Instruments, Assets, Amortized Cost Basis Derivative Financial Instruments, Assets, Amortized Cost Basis Derivative Financial Instruments, Assets, Amortized Cost Basis Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Vested in period (in shares) Shares, Vested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Class of Stock [Axis] Class of Stock [Axis] Accumulated Amortization Intangible Asset, Finite-Lived, Accumulated Amortization Capitalized stock-based compensation Share-Based Payment Arrangement, Amount Capitalized Recently Issued Accounting Policies New Accounting Pronouncements, Policy [Policy Text Block] Land Land [Member] Contract liabilities Increase (Decrease) in Contract with Customer, Liability Noncontrolling Interest Noncontrolling Interest [Member] Fiscal 2027 Sales-Type and Direct Financing Leases, Payment to be Received, Year One Schedule Of Accrued Liabilities Schedule of Accrued Liabilities [Table Text Block] Derivative Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Derivative Liability, 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Grants in Period, Weighted Average Exercise Price Donation commitments, Thereafter Unrecorded Unconditional Donation Obligation, Due after Five Years Unrecorded Unconditional Donation Obligation, Due after Five Years Fiscal Year Fiscal Period, Policy [Policy Text Block] November 2024 Restructuring Plan November 2024 Restructuring Plan [Member] November 2024 Restructuring Plan Liabilities Liabilities, Fair Value Disclosure Shares authorized under plan Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized Property, Plant, and Equipment Property, Plant, and Equipment [Table Text Block] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Name Outstanding Recovery, Individual Name Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Net current-period other comprehensive income/(loss) Other Comprehensive Income (Loss), After Reclassifications, Net of Tax Other Comprehensive Income (Loss), After Reclassifications, Net of Tax Geographical [Domain] Geographical [Domain] 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] Total undiscounted cash flows Sales-Type and Direct Financing Leases, Payment to be Received Purchase Obligation, Fiscal 2027 Unrecorded Unconditional Purchase Obligation, to be Paid, Year Three Capitalized stock-based compensation expense APIC, Share-Based Payment Arrangement, Increase for Cost Capitalized APIC, Share-Based Payment Arrangement, Increase for Cost Capitalized Non-cash investing activities and financing activities: Noncash Investing and Financing Items [Abstract] Investments Held In Supplemental Retirement Plan Investments Held In Supplemental Retirement Plan [Member] Investments Held In Supplemental Retirement Plan [Member] Asset Class [Domain] Asset Class [Domain] Related Party Transactions [Abstract] Other liabilities Other Sundry Liabilities, Noncurrent Compensation Amount Outstanding Recovery Compensation Amount Individual: Individual [Axis] Percentage acquired Business Combination, Voting Equity Interest Acquired, Percentage Diluted (in shares) Weighted average shares outstanding-diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Entity Emerging Growth Company Entity Emerging Growth Company Related Party Transaction [Line Items] Related Party Transaction [Line Items] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Composition Of Certain Financial Statement Captions [Line Items] Composition Of Certain Financial Statement Captions [Line Items] Composition Of Certain Financial Statement Captions [Line Items]. Less: imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Year End Stock Price (in dollars per share) Year End Stock Price Year end stock price. Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Income tax effect - benefit/(expense) Reclassification From Accumulated Other Comprehensive Income, Current Period, Tax Reclassification From Accumulated Other Comprehensive Income, Current Period, Tax Cost of revenue: Cost of Revenue [Abstract] Intangible Asset, Goodwill and Other [Abstract] Intangible Asset, Goodwill and Other [Abstract] Total, due in Fiscal 2026 Total operating leases and purchase obligations due in two years Total operating leases and purchase obligations due in two years. Donation commitments, Fiscal 2026 Unrecorded Unconditional Donation Obligation, Due within Two Years Unrecorded Unconditional Donation Obligation, Due within Two Years Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Total undiscounted lease payments Lessee, Operating Lease, Liability, to be Paid Litigation Status [Domain] Litigation Status [Domain] Weighted Average Fair Value, Non-vested at beginning of period (in dollars per share) Weighted Average Fair Value, Non-vested at end of period (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value All Executive Categories All Executive Categories [Member] Less: Carrying value of lease receivables Sales-type and Direct Financing Leases, Lease Receivable, Undiscounted Excess Amount Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Performance-Based Restricted Stock Units Performance-Based Restricted Stock Units [Member] Performance-Based Restricted Stock Units [Member] Cash and cash equivalents: Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation [Abstract] Sales and marketing Selling and Marketing Expense Schedule of Earnings Per Share, Basic and Diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Options Granted From June 2008 Options Granted From June Two Thousand Eight Member Options Granted From June 2008 [Member] Operating Segments Segment Reporting [Text Block] Minimum Minimum [Member] Estimated Fair Value Investments, Fair Value Disclosure Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Reportable Segment Reportable Segment [Member] Reportable Segment Effect of foreign exchange rate changes on cash, cash equivalents, and restricted cash Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs, by Report Line [Axis] Location, Statement of Income, Balance [Axis] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Weighted average remaining contractual life Weighted Average Remaining Contractual Life, Options outstanding Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted-Average Remaining Contractual Term Performance-Based Stock Options [Member] Performance-Based Stock Options [Member] Performance-Based Stock Options [Member] Stockholders' Equity And Stock-Based Compensation [Abstract] Stockholders' Equity And Stock-Based Compensation [Abstract] Stockholders Equity And Stock-Based Compensation Abstract 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] Unbilled Receivables, Current Unbilled Receivables, Current Business Combination [Line Items] Business Combination [Line Items] Dividend Payment Dividends, Common Stock Translation adjustments Goodwill, Foreign Currency Translation and Measurement Period Adjustments Common stock, shares authorized (shares) Common Stock, Shares Authorized Naming rights, Fiscal 2028 Unrecorded Unconditional Obligation, Balance on Fourth Anniversary Unrecorded Unconditional Obligation, Balance on Fourth Anniversary Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Accrued compensation and benefits Accrued Employee Benefits, Current Exercise Price Award Exercise Price Restructuring Cost [Table] Restructuring Cost [Table] Leased facility exit costs and other costs Facility Closing [Member] Segment Reporting [Line Items] Segment Reporting [Line Items] Authorization Amount Stock repurchase program, authorized amount Share Repurchase Program, Authorized, Amount 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] Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Proceeds from sales of marketable securities Proceeds from Sale of Debt Securities, Available-for-Sale Total cash, cash equivalents, and investments, Cost Investment Owned, Cost Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Equity Method Investments Equity Method Investments Restructuring reserve, beginning balance Restructuring reserve, ending balance Restructuring Reserve Composition Of Certain Financial Statement Captions [Abstract] Composition Of Certain Financial Statement Captions [Abstract] Composition Of Certain Financial Statement Captions [Abstract] Equity Component [Domain] Equity Component [Domain] Accrued customer refunds Contract with Customer, Refund Liability Accounts receivable and contract assets, gross Accounts Receivable, before Allowance for Credit Loss, Current Adoption Date Trading Arrangement Adoption Date Short-term investments: Short-Term Investments [Abstract] Total other income Nonoperating Income (Expense) Restructuring Type [Axis] Restructuring Type [Axis] Title Trading Arrangement, Individual Title Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Accounting Policies [Abstract] Accounting Policies [Abstract] Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Risk-free interest rate Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Total Debt Securities, Available-for-Sale, Excluding Accrued Interest, Noncurrent Total lease liabilities Operating Lease, Liability Change in property, plant, and equipment purchased, unpaid at period-end Increase (Decrease) in Capital Expenditures Incurred but Not yet Paid Increase (Decrease) in Capital Expenditures Incurred but Not yet Paid Options outstanding to purchase Shares, Options outstanding at beginning of period (in shares) Shares, Options outstanding at end of period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Composition Of Certain Financial Statement Captions Composition Of Certain Financial Statement Captions [Text Block] Composition of Certain Financial Statement Captions [Text Block] Type of Restructuring [Domain] Type of Restructuring [Domain] Business Combination [Domain] Business Combination [Domain] Cash, Cash Equivalents, And Investments, Unrealized Gain Cash, Cash Equivalents, And Investments, Unrealized Gain Cash, Cash Equivalents, And Investments, Unrealized Gain Commitments And Contingencies Commitments and Contingencies Disclosure [Text Block] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Restricted stock units Restricted Stock Units (RSUs) [Member] All Adjustments to Compensation All Adjustments to Compensation [Member] Business Combination [Axis] Business Combination [Axis] Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Remaining performance obligation, percent Revenue, Remaining Performance Obligation, Percentage Income Statement [Abstract] Income Statement [Abstract] Stockholders’ equity: Equity, Attributable to Parent [Abstract] Document Transition Report Document Transition Report Restructuring Plan [Domain] Restructuring Plan [Domain] Operating expenses: Operating Expenses [Abstract] Deferred taxes Deferred Income Tax Assets, Net Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Intangible Asset, Finite-Lived Intangible Asset, Finite-Lived [Table Text Block] Lessor, Lease, Description [Line Items] Lessor, Lease, Description [Line Items] Other Commitments [Domain] Other Commitments [Domain] City Area Code City Area Code Subsequent Event Subsequent Events [Text Block] Amortization of operating lease right-of-use assets Operating Lease, Right-of-Use Asset, Periodic Reduction Unrealized losses Other Comprehensive Income (Loss), Before Reclassification, Before Tax, Excluding Foreign Currency Translation Other Comprehensive Income (Loss), Before Reclassification, Before Tax, Excluding Foreign Currency Translation Name Forgone Recovery, Individual Name Cost Debt Securities, Available-for-Sale, Amortized Cost, Excluding 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Accumulated Gross Unrealized Gain, before Tax, Noncurrent Unrealized gains/(losses) on investments, net of tax benefit/(expense) of $0, $0, $5, and $0 OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax 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 Restructuring Charges [Abstract] Restructuring Charges [Abstract] Total Shareholder Return Amount Total Shareholder Return Amount Tax withholdings on vesting of restricted stock Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation Business Combination Business Combination [Table Text Block] Research and 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] Financing activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Property, plant, and equipment, net Property, plant, and equipment, net Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization Financial Instruments [Domain] Financial Instruments [Domain] Leases Lessor, Sales-type Leases [Text Block] Intangible Asset, Finite-Lived, Class [Axis] Intangible Asset, Finite-Lived, Class [Axis] Acquired patents and technology Acquired Patents And Technology [Member] Acquired Patents And Technology [Member] Goodwill and Intangible Assets Intangible Asset and Goodwill [Text Block] Underlying Securities Award Underlying Securities Amount Less: comprehensive (income) attributable to controlling interest Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Revenue Recognition Revenue from 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