Consolidated Statements of Stockholders' Equity (USD $) In Thousands	Total		Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Parent [Member]	Noncontrolling Interest [Member]
Beginning balance at Sep. 30, 2011	$ 1,685,350		$ 110	$ 210,681	$ 1,445,189	$ 7,533	$ 1,663,513	$ 21,837
Net income	161,683				161,279		161,279	404
Translation adjustments, net of tax	1,557					1,405	1,405	152
Unrealized gains (losses) on available-for-sale securities, net of tax	192					192	192
Distributions to controlling interest	(13)							(13)
Stock-based compensation expense	23,198			23,198			23,198
Capitalized stock-based compensation expense	338			338			338
Repurchase of common stock	(86,149)		(3)	(86,146)	0		(86,149)
Tax benefit/(deficiency) from stock incentive plans	(2,513)			(2,513)			(2,513)
Class A common stock issued under employee stock plans	6,552			6,552			6,552
Shares repurchased for tax withholdings on vesting of restricted stock units	(3,107)			(3,107)			(3,107)
Exercise of Class B stock options	79			79			79
Ending balance at Mar. 30, 2012	1,787,167		107	149,082	1,606,468	9,130	1,764,787	22,380
Beginning balance at Sep. 28, 2012	1,743,233		103	0	1,709,479	10,687	1,720,269	22,964
Net income	113,716				113,260		113,260	456
Translation adjustments, net of tax	(1,872)					(1,354)	(1,354)	(518)
Unrealized gains (losses) on available-for-sale securities, net of tax	(561)					(561)	(561)
Distributions to controlling interest	(5,039)							(5,039)
Stock-based compensation expense	32,649			32,649			32,649
Repurchase of common stock	(65,433)	[1]	(1)	(29,270)	(36,162)		(65,433)
Cash dividends declared and paid on common stock	(408,206)
Tax benefit/(deficiency) from stock incentive plans	(2,024)			(2,024)			(2,024)
Class A common stock issued under employee stock plans	6,909			6,909			6,909
Shares repurchased for tax withholdings on vesting of restricted stock units	(5,132)			(5,132)			(5,132)
Exercise of Class B stock options	293			293			293
Ending balance at Mar. 29, 2013	$ 1,408,533		$ 102	$ 3,425	$ 1,378,371	$ 8,772	$ 1,390,670	$ 17,863

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