Interim Condensed Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 27, 2015	Mar. 28, 2014	Mar. 27, 2015	Mar. 28, 2014
Revenue:
Licensing	$ 243,333	$ 258,616	$ 459,931	$ 464,276
Products	22,985	14,563	36,248	32,667
Services	5,632	5,413	10,009	12,926
Total revenue	271,950	278,592	506,188	509,869
Cost of revenue:
Cost of licensing	3,787	3,742	7,268	7,743
Cost of products	18,237	10,293	30,821	24,081
Cost of services	3,125	3,470	6,470	7,063
Total cost of revenue	25,149	17,505	44,559	38,887
Gross margin	246,801	261,087	461,629	470,982
Operating expenses:
Research and development	56,601	44,798	105,195	89,261
Sales and marketing	65,940	64,828	133,958	125,207
General and administrative	45,653	46,457	90,369	88,365
Restructuring charges/(credits)	0	86	(39)	3,301
Total operating expenses	168,194	156,169	329,483	306,134
Operating income	78,607	104,918	132,146	164,848
Other income/expense:
Interest income	1,091	920	1,991	1,574
Interest expense	(31)	(93)	(46)	(205)
Other income/(expense), net	218	(2,823)	110	(2,594)
Total other income/expense	1,278	(1,996)	2,055	(1,225)
Income before income taxes	79,885	102,922	134,201	163,623
Provision for income taxes	(21,353)	(26,373)	(33,732)	(41,828)
Net income including controlling interest	58,532	76,549	100,469	121,795
Less: net (income) attributable to controlling interest	(558)	(681)	(1,138)	(1,412)
Net income attributable to Dolby Laboratories, Inc.			99,331	120,383
Net Income Per Share:
Basic (in usd per share)			$ 0.97	$ 1.18
Diluted (in usd per share)			$ 0.95	$ 1.16
Weighted-Average Shares Outstanding:
Basic (in shares)			102,406	102,021
Diluted (in shares)	103,904	103,934	104,097	103,460
Related party rent expense:
Included in operating expenses	755	346	1,543	692
Included in net income attributable to controlling interest	$ 1,151	$ 1,250	$ 2,304	$ 2,505
Common stock, dividends declared (in dollars per share)	$ 0.10	$ 0.00	$ 0.20	$ 0.00