Stockholders' Equity and Stock-Based Compensation Stockholders' Equity and Stock-Based Compensation (Schedule Of Stock Repurchased Under Stock Repurchased Program) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended				6 Months Ended
	Mar. 29, 2013		Dec. 28, 2012		Mar. 29, 2013		Mar. 30, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock Repurchased (in shares)	382,481		1,674,648		2,057,129
Cost	$ 11,477	[1]	$ 53,956	[1]	$ 65,433	[1]	$ 86,149
Average Price Paid per Share	$ 29.99	[2]	$ 32.20	[2]	$ 29.99	[2]

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

[2] Excludes commission costs.