Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Sep. 24, 2021	Sep. 25, 2020	Sep. 27, 2019
Revenue:
Revenue	$ 1,281,256	$ 1,161,792	$ 1,241,620
Total revenue	1,281,256	1,161,792	1,241,620
Cost of revenue:
Total cost of revenue	130,025	146,498	160,854
Gross margin	1,151,231	1,015,294	1,080,766
Operating expenses:
Research and development	253,640	239,045	237,871
Sales and marketing	332,671	335,933	343,835
General and administrative	224,161	219,753	205,425
Gain on sale of assets	(13,871)	0	0
Restructuring charges	(10,240)	(1,821)	(36,558)
Total operating expenses	806,841	796,552	823,689
Operating income	344,390	218,742	257,077
Other income/expense:
Interest income	3,493	12,725	24,919
Interest expense	(479)	(186)	(170)
Other income/(expense), net	7,108	8,434	481
Total other income	10,122	20,973	25,230
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	354,512	239,715	282,307
Provision for income taxes	(36,689)	(8,096)	(26,802)
Net income including controlling interest	317,823	231,619	255,505
Less: net (income) attributable to controlling interest	(7,596)	(256)	(354)
Net income attributable to Dolby Laboratories, Inc.	$ 310,227	$ 231,363	$ 255,151
Net Income Per Share:
Basic (usd per share)	$ 3.07	$ 2.30	$ 2.51
Diluted (usd per share)	$ 2.97	$ 2.25	$ 2.44
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Basic (shares)	101,190	100,564	101,629
Diluted (shares)	104,622	102,944	104,572
Cash dividend declared per common share	$ 0.91	$ 0.88	$ 0.79
Cash dividend paid per common share	$ 0.88	$ 0.88	$ 0.76
Licensing
Revenue:
Revenue	$ 1,214,147	$ 1,078,577	$ 1,107,280
Cost of revenue:
Cost of revenue	55,421	50,822	57,531
Products and services
Revenue:
Revenue	67,109	83,215	134,340
Cost of revenue:
Cost of revenue	$ 74,604	$ 95,676	$ 103,323