Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 30, 2012	Sep. 30, 2011
ASSETS
Cash and cash equivalents	$ 747,988	$ 551,512
Short-term investments	350,735	391,281
Accounts receivable, net of allowance of $2,466 at September 30, 2011 and $2,098 at March 30, 2012	57,762	61,815
Inventories	16,562	26,244
Deferred taxes	94,859	90,869
Prepaid expenses and other current assets	26,099	36,877
Total current assets	1,294,005	1,158,598
Long-term investments	209,804	272,797
Property, plant and equipment, net	135,517	117,107
Intangible assets, net	44,816	51,573
Goodwill	264,750	263,260
Deferred taxes	20,337	14,779
Other non-current assets	16,171	6,273
Total assets	1,985,400	1,884,387
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	5,444	10,887
Accrued liabilities	108,245	117,035
Income taxes payable	9,391	4,762
Deferred revenue	26,718	26,701
Total current liabilities	149,798	159,385
Long-term deferred revenue	16,332	15,526
Deferred taxes	658	671
Other non-current liabilities	31,445	23,455
Total liabilities	198,233	199,037
Stockholders' equity:
Additional paid-in capital	149,082	210,681
Retained earnings	1,606,468	1,445,189
Accumulated other comprehensive income	9,130	7,533
Total stockholders' equity-Dolby Laboratories, Inc.	1,764,787	1,663,513
Controlling interest	22,380	21,837
Total stockholders' equity	1,787,167	1,685,350
Total liabilities and stockholders' equity	1,985,400	1,884,387
Class A Common Stock [Member]
Stockholders' equity:
Common stock	50	52
Class B Common Stock [Member]
Stockholders' equity:
Common stock	$ 57	$ 58