| Component: (Network and Table) | |
|---|---|
| Network | 2403407 - Disclosure - Composition Of Certain Financial Statement Captions (Schedule Of Accounts Receivable) (Details) (http://www.dolby.com/role/CompositionOfCertainFinancialStatementCaptionsScheduleOfAccountsReceivableDetails) |
| Table | Schedule of Accounts, Notes, Loans and Financing Receivable [Table] |
| Reporting Entity [Axis] | 0001308547 (http://www.sec.gov/CIK) |
| Accounts, Notes, Loans and Financing Receivable [Line Items] | Period [Axis] | |||||
|---|---|---|---|---|---|---|
2012-09-28 | 2011-09-30 | |||||
| Accounts, Notes, Loans and Financing Receivable by Receivable Type [Axis] | Accounts, Notes, Loans and Financing Receivable by Receivable Type [Axis] | |||||
| Trade Accounts Receivable [Member] | Patent Administration Program Member | Receivable Type [Domain] | Trade Accounts Receivable [Member] | Patent Administration Program Member | Receivable Type [Domain] | |
Trade accounts receivable | 43,565,000 | 59,831,000 | ||||
Accounts receivable related to patent administration program | 886,000 | 4,450,000 | ||||
Accounts receivable, gross | 44,451,000 | 64,281,000 | ||||
Less: allowance for doubtful accounts | (956,000) | (2,466,000) | ||||
Accounts receivable, net | 43,495,000 | 61,815,000 | ||||