Stockholders' Equity And Stock-Based Compensation (Schedule Of Stock-Based Compensation Expense By Plan) (Details) (USD $) In Thousands | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Sep. 30, 2011 | Sep. 24, 2010 | Sep. 25, 2009 | ||||||||
| Stockholders' Equity And Stock-Based Compensation [Line Items] | ||||||||||
| Share based compensation expense | $ 43,665 | [1] | $ 28,815 | [1] | $ 22,422 | [1] | ||||
| Benefit from income taxes | (14,744) | [1] | (9,805) | [1] | (7,708) | [1] | ||||
| Total stock-based compensation, net of tax | 28,921 | [1] | 19,010 | [1] | 14,714 | [1] | ||||
Stock Option [Member] | ||||||||||
| Stockholders' Equity And Stock-Based Compensation [Line Items] | ||||||||||
| Share based compensation expense | 24,788 | [1],[2] | 18,135 | [1],[2] | 16,643 | [1],[2] | ||||
Restricted Stock Units [Member] | ||||||||||
| Stockholders' Equity And Stock-Based Compensation [Line Items] | ||||||||||
| Share based compensation expense | 18,339 | [1] | 9,560 | [1] | 5,205 | [1] | ||||
Employee Stock Purchase Plan [Member] | ||||||||||
| Stockholders' Equity And Stock-Based Compensation [Line Items] | ||||||||||
| Share based compensation expense | 842 | [1] | 673 | [1] | 529 | [1] | ||||
Stock Appreciation Rights (SARs) [Member] | ||||||||||
| Stockholders' Equity And Stock-Based Compensation [Line Items] | ||||||||||
| Share based compensation expense | $ (304) | [1] | $ 447 | [1] | $ 45 | [1] | ||||
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