v2.4.0.6
Document And Entity Information
3 Months Ended
Dec. 30, 2011
Jan. 19, 2012
Class A Common Stock [Member]
Jan. 19, 2012
Class B Common Stock [Member]
Document Type 10-Q    
Amendment Flag false    
Document Period End Date Dec. 30, 2011    
Document Fiscal Year Focus 2012    
Document Fiscal Period Focus Q1    
Entity Registrant Name Dolby Laboratories, Inc.    
Entity Central Index Key 0001308547    
Current Fiscal Year End Date --09-28    
Entity Filer Category Large Accelerated Filer    
Entity Common Stock, Shares Outstanding   51,375,078 57,298,654