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v2.4.1.9

Restructuring (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 27, 2015 | Mar. 28, 2014 | Mar. 27, 2015 | Mar. 28, 2014
Restructuring Reserve [Roll Forward] |  |  |  |
Restructuring charges | $ 0 us-gaap_RestructuringCharges | $ 86 us-gaap_RestructuringCharges | $ (39)us-gaap_RestructuringCharges | $ 3,301 us-gaap_RestructuringCharges
Restructuring Charges [Member] |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |
Restructuring charges |  |  | 3,300 us-gaap_RestructuringCharges / us-gaap_RestructuringPlanAxis = us-gaap_RestructuringChargesMember |
2014 Restructuring Plan [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Number of positions eliminated |  |  | 50 us-gaap_RestructuringAndRelatedCostNumberOfPositionsEliminated / us-gaap_RestructuringPlanAxis = dlb_A2014RestructuringPlanMember |
Restructuring Reserve [Roll Forward] |  |  |  |
Restructuring reserve, beginning balance |  |  | 146 us-gaap_RestructuringReserve / us-gaap_RestructuringPlanAxis = dlb_A2014RestructuringPlanMember |
Restructuring charges |  |  | (39)us-gaap_RestructuringCharges / us-gaap_RestructuringPlanAxis = dlb_A2014RestructuringPlanMember |
Cash payments |  |  | (10)us-gaap_PaymentsForRestructuring / us-gaap_RestructuringPlanAxis = dlb_A2014RestructuringPlanMember |
Non-cash charges and other adjustments |  |  | (97)us-gaap_RestructuringReserveSettledWithoutCash1 / us-gaap_RestructuringPlanAxis = dlb_A2014RestructuringPlanMember |
Restructuring reserve, ending balance | $ 0 us-gaap_RestructuringReserve / us-gaap_RestructuringPlanAxis = dlb_A2014RestructuringPlanMember |  | $ 0 us-gaap_RestructuringReserve / us-gaap_RestructuringPlanAxis = dlb_A2014RestructuringPlanMember |

X
- Definition Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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Balance Type: | credit
Period Type: | duration

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- Definition The number of positions eliminated during the period as a result of restructuring activities. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 + Details
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- Details
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- Definition Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 + Details
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- Details
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Balance Type: | na
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- Definition Amount of consideration other than cash used to fully or partially settle an accrued restructuring cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)(2)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 + Details
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Period Type: | duration

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- Details
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Namespace Prefix: |
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- Details
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