v2.4.0.6

Fair Value Measurements - Estimated Fair Values of Convertible Notes (Detail) (USD $) In Thousands, unless otherwise specified | Mar. 30, 2013 | Sep. 29, 2012
--- | --- | ---
Estimated Fair Value Of Financial Instruments [Line Items] |  |
Estimated fair values of debt instruments | $ 1,859,900 | $ 1,767,900
2007 Notes [Member] |  |
Estimated Fair Value Of Financial Instruments [Line Items] |  |
Estimated fair values of debt instruments | 407,100 | 771,600
2010 Notes [Member] |  |
Estimated Fair Value Of Financial Instruments [Line Items] |  |
Estimated fair values of debt instruments | 541,100 | 505,600
2012 Notes [Member] |  |
Estimated Fair Value Of Financial Instruments [Line Items] |  |
Estimated fair values of debt instruments | 524,100 | 490,700
2013 Notes [Member] |  |
Estimated Fair Value Of Financial Instruments [Line Items] |  |
Estimated fair values of debt instruments | $ 387,600 |

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- Definition Longterm Debt Fair Value Disclosure + References No definition available. + Details
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