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Fair Value Measurements - Estimated Fair Values of Convertible Notes (Detail) (USD $)
In Thousands, unless otherwise specified |
Sep. 28, 2013
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Sep. 29, 2012
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|---|---|---|
| Estimated Fair Value Of Financial Instruments [Line Items] | ||
| Estimated fair values of debt instruments | $ 1,820,300 | $ 1,767,900 |
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2007 Notes [Member]
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| Estimated Fair Value Of Financial Instruments [Line Items] | ||
| Estimated fair values of debt instruments | 405,000 | 771,600 |
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2010 Notes [Member]
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| Estimated Fair Value Of Financial Instruments [Line Items] | ||
| Estimated fair values of debt instruments | 510,800 | 505,600 |
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2012 Notes [Member]
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| Estimated Fair Value Of Financial Instruments [Line Items] | ||
| Estimated fair values of debt instruments | 518,800 | 490,700 |
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2013 Notes [Member]
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| Estimated Fair Value Of Financial Instruments [Line Items] | ||
| Estimated fair values of debt instruments | $ 385,700 |