v2.3.0.15

Related Party Transactions (Details) (USD $)	12 Months Ended
	Sep. 30, 2011	Sep. 24, 2010	Sep. 25, 2009
Related party rent expense included in general and administrative expenses	$ 1,372,000	$ 1,372,000	$ 1,272,000
Distributed to principal stockholder	$ 300,000	$ 300,000	$ 300,000
Dolby Properties, LLC [Member]
Ownership interest	37.50%
Dolby Properties Brisbane, LLC [Member]
Ownership interest	49.00%
Dolby Properties Burbank, LLC [Member]
Ownership interest	49.00%
Dolby Properties United Kingdom, LLC [Member]
Ownership interest	49.00%
Dolby Properties, LP [Member]
Ownership interest	10.00%

X

- Definition

Costs of sales and operating expenses for the period incurred from transactions with related parties.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.2)

-SubTopic 10

-Topic 225

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

+ Details

Name:	us-gaap_CostsAndExpensesRelatedParty
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The amount of cash distributions paid to a common shareholder or unit-holder by a LLC or LP.

+ Details

Name:	us-gaap_DistributionMadeToMemberOrLimitedPartnerCashDistributionsPaid
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ Details

Name:	us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix:	us-gaap
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant