Income Taxes (Components Of Income Before Provision For Income Taxes) (Details) (USD $) In Thousands | 3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Sep. 30, 2011 | Jul. 01, 2011 | Apr. 01, 2011 | Dec. 31, 2010 | Sep. 24, 2010 | Jun. 25, 2010 | Mar. 26, 2010 | Dec. 25, 2009 | Sep. 30, 2011 | Sep. 24, 2010 | Sep. 25, 2009 | |
| Income Taxes [Abstract] | |||||||||||
| U.S. | $ 350,189 | $ 401,936 | $ 357,401 | ||||||||
| Foreign | 90,454 | 35,076 | 14,018 | ||||||||
| Income before provision for income taxes | $ 116,632 | $ 90,451 | $ 122,494 | $ 111,066 | $ 98,622 | $ 98,082 | $ 133,929 | $ 106,379 | $ 440,643 | $ 437,012 | $ 371,419 |