Consolidated Statements Of Stockholders' Equity (USD $) In Thousands	Total		Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Total Dolby Laboratories,Inc.[Member]	Controlling Interest [Member]
Beginning balance at Sep. 28, 2012	$ 1,743,233		$ 103	$ 0	$ 1,709,479	$ 10,687	$ 1,720,269	$ 22,964
Net income	51,477				51,349		51,349	128
Translation adjustments, net of taxes	1,234					1,264	1,264	(30)
Unrealized losses on available-for-sale securities, net of tax	(737)					(737)	(737)
Distributions to controlling interest	(5,039)							(5,039)
Stock-based compensation expense	17,704			17,704			17,704
Repurchase of common stock	(53,956)		(1)	(17,794)	(36,161)		(53,956)
Cash dividends declared and paid on common stock	(408,206)				(408,206)		(408,206)
Tax benefit/(deficiency) from the stock incentive plans	(776)			(776)			(776)
Class A common stock issued under employee stock plans	4,360			4,360			4,360
Shares repurchased for tax witholdings on vesting of restricted stock	(3,636)			(3,636)			(3,636)
Exercise of Class B stock options	142			142			142
Ending balance at Dec. 28, 2012	1,345,800		102	0	1,316,461	11,214	1,327,777	18,023
Beginning balance at Sep. 27, 2013	1,500,026		102	18,812	1,454,382	7,814	1,481,110	18,916
Net income	45,246				44,515		44,515	731
Translation adjustments, net of taxes	(390)					(534)	(534)	144
Unrealized losses on available-for-sale securities, net of tax	105					105	105
Stock-based compensation expense	15,054			15,054			15,054
Repurchase of common stock	(11,660)	[1]		(11,660)			(11,660)
Tax benefit/(deficiency) from the stock incentive plans	(11)			(11)			(11)
Class A common stock issued under employee stock plans	8,089		1	8,088			8,089
Shares repurchased for tax witholdings on vesting of restricted stock	(6,727)			(6,727)			(6,727)
Exercise of Class B stock options	38			38			38
Ending balance at Dec. 27, 2013	$ 1,549,770		$ 103	$ 23,594	$ 1,498,897	$ 7,385	$ 1,529,979	$ 19,791

[1] Cost of share repurchases includes the price paid per share and applicable commissions.