Interim Condensed Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017
Revenue:
Licensing	$ 286,325	$ 278,106	$ 817,484	$ 752,422
Products	26,265	22,569	73,863	71,493
Services	4,857	4,990	15,252	15,491
Total revenue	317,447	305,665	906,599	839,406
Cost of revenue:
Cost of licensing	12,111	12,711	31,980	29,628
Cost of products	17,213	14,910	49,851	46,618
Cost of services	5,141	4,504	14,469	12,823
Total cost of revenue	34,465	32,125	96,300	89,069
Gross margin	282,982	273,540	810,299	750,337
Operating expenses:
Research and development	60,357	59,631	176,294	175,490
Sales and marketing	79,834	73,480	224,002	220,275
General and administrative	48,081	44,497	147,113	129,290
Restructuring credits	(82)	0	(446)	0
Total operating expenses	188,190	177,608	546,963	525,055
Operating income	94,792	95,932	263,336	225,282
Other income/expense:
Interest income	5,488	2,511	13,161	6,511
Interest expense	(87)	(31)	(151)	(94)
Other income/(expense), net	(3,603)	(2,109)	(5,439)	(1,546)
Total other income	1,798	371	7,571	4,871
Income before income taxes	96,590	96,303	270,907	230,153
Provision for income taxes	(13,302)	(20,117)	(198,332)	(49,666)
Net income including controlling interest	83,288	76,186	72,575	180,487
Less: net (income) attributable to controlling interest	(143)	(143)	(421)	(480)
Net income attributable to Dolby Laboratories, Inc.	$ 83,145	$ 76,043	$ 72,154	$ 180,007
Net income per share:
Basic (in usd per share)	$ 0.80	$ 0.75	$ 0.70	$ 1.77
Diluted (in usd per share)	$ 0.78	$ 0.73	$ 0.67	$ 1.73
Weighted-average shares outstanding:
Basic (in shares)	103,836	101,905	103,386	101,725
Diluted (in shares)	106,950	104,222	106,943	103,986
Related party rent expense:
Included in operating expenses	$ 1,017	$ 784	$ 2,585	$ 2,359
Included in net income attributable to controlling interest	$ 179	$ 176	$ 535	$ 526
Common stock, dividends declared (in dollars per share)	$ 0.16	$ 0.14	$ 0.48	$ 0.42
Common Stock, Dividends, Per Share, Cash Paid	$ 0.16	$ 0.14	$ 0.48	$ 0.42