Consolidated Statements of Comprehensive Income Statement - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2016	Sep. 25, 2015	Sep. 26, 2014
Statement of Comprehensive Income [Abstract]
Net income including controlling interest	$ 186,402	$ 183,240	$ 208,720
Other comprehensive income/(loss):
Foreign currency translation adjustments, net of tax	85	(14,858)	(5,004)
Unrealized gains/(losses) on available-for-sale securities, net of tax	392	(155)	302
Comprehensive income	186,879	168,227	204,018
Less: comprehensive (income) attributable to controlling interest	246	(1,326)	(2,715)
Comprehensive income attributable to Dolby Laboratories, Inc.	$ 187,125	$ 166,901	$ 201,303