Interim Condensed Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 27, 2020	Mar. 29, 2019	Mar. 27, 2020	Mar. 29, 2019
Revenue:
Revenue	$ 351,815	$ 338,258	$ 643,692	$ 640,634
Total revenue	351,815	338,258	643,692	640,634
Cost of revenue:
Total cost of revenue	36,830	36,575	74,145	75,204
Gross margin	314,985	301,683	569,547	565,430
Operating expenses:
Research and development	60,086	58,625	117,736	117,272
Sales and marketing	88,485	92,694	183,603	178,296
General and administrative	60,800	47,416	113,329	98,229
Restructuring charges/(credits)	(331)	18	344	32
Total operating expenses	209,040	198,753	415,012	393,829
Operating income	105,945	102,930	154,535	171,601
Other income/expense:
Interest income	4,721	7,494	9,653	12,679
Interest expense	(25)	(32)	(97)	(77)
Other income/(expense), net	138	(390)	1,142	53
Total other income	4,834	7,072	10,698	12,655
Income before income taxes	110,779	110,002	165,233	184,256
Provision for income taxes	(22,105)	(36,427)	(27,968)	(12,323)
Net income including controlling interest	88,674	73,575	137,265	171,933
Less: net income attributable to controlling interest	(178)	(135)	(16)	(274)
Net income attributable to Dolby Laboratories, Inc.	$ 88,496	$ 73,440	$ 137,249	$ 171,659
Net income per share:
Basic (in usd per share)	$ 0.88	$ 0.72	$ 1.36	$ 1.68
Diluted (in usd per share)	$ 0.86	$ 0.70	$ 1.33	$ 1.63
Weighted-average shares outstanding:
Basic (in shares)	100,854	102,141	100,595	102,409
Diluted (in shares)	102,773	104,587	103,133	105,529
Related party rent expense:
Included in operating expenses	$ 78	$ 768	$ 148	$ 1,648
Included in net income attributable to controlling interest	$ 327	$ 176	$ 221	$ 352
Common stock, dividends declared (in dollars per share)	$ 0.22	$ 0.19	$ 0.44	$ 0.38
Common Stock, Dividends, Per Share, Cash Paid	$ 0.22	$ 0.19	$ 0.44	$ 0.38
Licensing
Revenue:
Revenue	$ 328,865	$ 310,308	$ 586,548	$ 570,587
Cost of revenue:
Cost of revenue	13,243	16,074	25,585	27,471
Products and services
Revenue:
Revenue	22,950	27,950	57,144	70,047
Cost of revenue:
Cost of revenue	$ 23,587	$ 20,501	$ 48,560	$ 47,733