Consolidated Statements of Comprehensive Income Statement (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 26, 2014	Sep. 27, 2013	Sep. 28, 2012
Statement of Comprehensive Income [Abstract]
Net income including controlling interest	$ 208,720	$ 190,302	$ 265,134
Other comprehensive income/(loss):
Foreign currency translation adjustments, net of tax	(5,004)	(2,037)	3,082
Unrealized gains/(losses) on available-for-sale securities, net of tax	302	(876)	380
Comprehensive income	204,018	187,389	268,596
Less: comprehensive (income) attributable to controlling interest	(2,715)	(991)	(1,140)
Comprehensive income attributable to Dolby Laboratories, Inc.	$ 201,303	$ 186,398	$ 267,456