v2.4.0.6
Document And Entity Information
9 Months Ended
Jun. 29, 2012
Jul. 19, 2012
Class A Common Stock [Member]
Jul. 19, 2012
Class B Common Stock [Member]
Entity Registrant Name Dolby Laboratories, Inc.    
Entity Central Index Key 0001308547    
Current Fiscal Year End Date --09-28    
Entity Filer Category Large Accelerated Filer    
Document Type 10-Q    
Document Period End Date Jun. 29, 2012    
Document Fiscal Year Focus 2012    
Document Fiscal Period Focus Q3    
Amendment Flag false    
Entity Common Stock, Shares Outstanding   47,612,218 57,098,489