XML 345 R100.htm IDEA: XBRL DOCUMENT
v3.25.3

Commitments And Contingencies (Schedule Of Contractual Obligations And Commitments) (Details) $ in Thousands | 12 Months Ended
--- | ---
Sep. 26, 2025 USD ($)
Commitments and Contingencies Disclosure [Abstract] |
Naming rights, Fiscal 2021 | $ 13,472
Naming rights, Fiscal 2022 | 8,534
Naming rights, Fiscal 2023 | 8,642
Naming rights, Fiscal 2024 | 8,751
Naming rights, Fiscal 2025 | 8,862
Naming rights, Thereafter | 18,060
Naming rights, Total | 66,321
Purchase obligations |
Purchase Obligation, Fiscal 2021 | 36,917
Purchase Obligation, Fiscal 2022 | 31,663
Purchase Obligation, Fiscal 2023 | 19,681
Purchase Obligation, Fiscal 2024 | 19,208
Purchase Obligation, Fiscal 2025 | 19,208
Purchase Obligation, Thereafter | 0
Unrecorded Unconditional Purchase Obligation | 126,677
Donation commitments |
Donation commitments, Fiscal 2021 | 183
Donation commitments, Fiscal 2022 | 153
Donation commitments, Fiscal 2023 | 153
Donation commitments, Fiscal 2024 | 153
Donation commitments, Fiscal 2025 | 153
Donation commitments, Thereafter | 431
Donation commitments, Total | 1,226
Total |
Total, due in Fiscal 2021 | 50,572
Total, due in Fiscal 2022 | 40,350
Total, due in Fiscal 2023 | 28,476
Total, due in Fiscal 2024 | 28,112
Total, due in Fiscal 2025 | 28,223
Total, due Thereafter | 18,491
Total due | $ 194,224
Naming Rights |
Other Commitments [Line Items] |
Term of agreement | 20 years
Donation Commitments |
Other Commitments [Line Items] |
Term of agreement | 15 years

X
- Definition Total operating leases and purchase obligations due. + References No definition available. + Details
Name: | dlb_TotalOperatingLeasesAndPurchaseObligationsDue
Namespace Prefix: | dlb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Total operating leases and purchase obligations due in five years. + References No definition available. + Details
Name: | dlb_TotalOperatingLeasesAndPurchaseObligationsDueInFiveYears
Namespace Prefix: | dlb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Total operating leases and purchase obligations due in four years. + References No definition available. + Details
Name: | dlb_TotalOperatingLeasesAndPurchaseObligationsDueInFourYears
Namespace Prefix: | dlb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Total operating leases and purchase obligations due in three years. + References No definition available. + Details
Name: | dlb_TotalOperatingLeasesAndPurchaseObligationsDueInThreeYears
Namespace Prefix: | dlb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Total operating leases and purchase obligations due in two years. + References No definition available. + Details
Name: | dlb_TotalOperatingLeasesAndPurchaseObligationsDueInTwoYears
Namespace Prefix: | dlb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Total operating leases and purchase obligations due thereafter. + References No definition available. + Details
Name: | dlb_TotalOperatingLeasesAndPurchaseObligationsDueThereafter
Namespace Prefix: | dlb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Total operating leases and purchase obligations due within one year. + References No definition available. + Details
Name: | dlb_TotalOperatingLeasesAndPurchaseObligationsDueWithinOneYear
Namespace Prefix: | dlb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Unrecorded Unconditional Donation Obligation + References No definition available. + Details
Name: | dlb_UnrecordedUnconditionalDonationObligation
Namespace Prefix: | dlb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Unrecorded Unconditional Donation Obligation, Due after Five Years + References No definition available. + Details
Name: | dlb_UnrecordedUnconditionalDonationObligationDueafterFiveYears
Namespace Prefix: | dlb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Unrecorded Unconditional Donation Obligation, Due in Next Twelve Months + References No definition available. + Details
Name: | dlb_UnrecordedUnconditionalDonationObligationDueinNextTwelveMonths
Namespace Prefix: | dlb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Unrecorded Unconditional Donation Obligation, Due within Five Years + References No definition available. + Details
Name: | dlb_UnrecordedUnconditionalDonationObligationDuewithinFiveYears
Namespace Prefix: | dlb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Unrecorded Unconditional Donation Obligation, Due within Four Years + References No definition available. + Details
Name: | dlb_UnrecordedUnconditionalDonationObligationDuewithinFourYears
Namespace Prefix: | dlb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Unrecorded Unconditional Donation Obligation, Due within Three Years + References No definition available. + Details
Name: | dlb_UnrecordedUnconditionalDonationObligationDuewithinThreeYears
Namespace Prefix: | dlb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Unrecorded Unconditional Donation Obligation, Due within Two Years + References No definition available. + Details
Name: | dlb_UnrecordedUnconditionalDonationObligationDuewithinTwoYears
Namespace Prefix: | dlb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Unrecorded Unconditional Obligation, Balance on Fifth Anniversary + References No definition available. + Details
Name: | dlb_UnrecordedUnconditionalObligationBalanceOnFifthAnniversary
Namespace Prefix: | dlb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Unrecorded Unconditional Obligation, Balance on Fourth Anniversary + References No definition available. + Details
Name: | dlb_UnrecordedUnconditionalObligationBalanceOnFourthAnniversary
Namespace Prefix: | dlb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Unrecorded Unconditional Obligation, Balance on Second Anniversary + References No definition available. + Details
Name: | dlb_UnrecordedUnconditionalObligationBalanceOnSecondAnniversary
Namespace Prefix: | dlb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Unrecorded Unconditional Obligation, Balance on Third Anniversary + References No definition available. + Details
Name: | dlb_UnrecordedUnconditionalObligationBalanceOnThirdAnniversary
Namespace Prefix: | dlb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Unrecorded Unconditional Obligation, Balance Sheet Amount + References No definition available. + Details
Name: | dlb_UnrecordedUnconditionalObligationBalanceSheetAmount
Namespace Prefix: | dlb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Unrecorded Unconditional Obligation Balance on First Anniversary + References No definition available. + Details
Name: | dlb_UnrecordedUnconditionalObligationBalanceonFirstAnniversary
Namespace Prefix: | dlb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Unrecorded Unconditional Obligation, Due After Five Years + References No definition available. + Details
Name: | dlb_UnrecordedUnconditionalObligationDueAfterFiveYears
Namespace Prefix: | dlb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Unrecorded Unconditional Obligation, Term of Agreement + References No definition available. + Details
Name: | dlb_UnrecordedUnconditionalObligationTermOfAgreement
Namespace Prefix: | dlb_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_OtherCommitmentFiscalYearMaturityAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_OtherCommitmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_PurchaseObligationFiscalYearMaturityAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_UnrecordedUnconditionalPurchaseObligationAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Includes, but is not limited to, lease not yet commenced. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 440 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482648/440-10-50-4 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-3 + Details
Name: | us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Includes, but is not limited to, lease not yet commenced. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 440 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482648/440-10-50-4 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-3 + Details
Name: | us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Includes, but is not limited to, lease not yet commenced. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 440 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482648/440-10-50-4 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-3 + Details
Name: | us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Includes, but is not limited to, lease not yet commenced. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 440 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482648/440-10-50-4 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-3 + Details
Name: | us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Includes, but is not limited to, lease not yet commenced. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 440 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482648/440-10-50-4 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-3 + Details
Name: | us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of unrecorded obligation to transfer funds in future for fixed or minimum amount or quantity of product and service at fixed or minimum price. Includes, but is not limited to, lease not yet commenced and take-or-pay and throughput contracts. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 440 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482648/440-10-50-4 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-3 + Details
Name: | us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Includes, but is not limited to, lease not yet commenced. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 440 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482648/440-10-50-4 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-3 + Details
Name: | us-gaap_UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_OtherCommitmentsAxis=dlb_NamingRightsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_OtherCommitmentsAxis=dlb_DonationCommitmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |