Interim Condensed Consolidated Statements of Comprehensive Income Statement - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 26, 2021	Mar. 27, 2020	Mar. 26, 2021	Mar. 27, 2020
Statement of Comprehensive Income [Abstract]
Net income including controlling interest	$ 76,345	$ 88,674	$ 219,035	$ 137,265
Other comprehensive income:
Currency translation adjustments gains/(losses), net of tax expense of ($35), ($40), $(507), and $0	(766)	(10,191)	7,402	(6,571)
Unrealized gains/(losses) on investments, net of tax benefit/(expense) of $44, $54, $46, and $(207)	(195)	273	(360)	(889)
Unrealized loss on cash flow hedges, net of tax benefit/(expense) of ($40), $37, $(330), and $0	(2,364)	(4,008)	(218)	(3,724)
Other Comprehensive Income (Loss), Net of Tax	(3,325)	(13,926)	6,824	(11,184)
Comprehensive income	73,020	74,748	225,859	126,081
Less: comprehensive (income) attributable to controlling interest	(234)	193	(7,889)	178
Comprehensive income attributable to Dolby Laboratories, Inc.	$ 72,786	$ 74,941	$ 217,970	$ 126,259