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Composition Of Certain Financial Statement Captions (Narrative) (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
Mar. 30, 2012
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Apr. 01, 2011
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Mar. 30, 2012
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Apr. 01, 2011
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| Composition Of Certain Financial Statement Captions [Abstract] | ||||
| Raw materials inventory included in noncurrent assets | $ 8.8 | $ 8.8 | ||
| Revenue from material customer | $ 37.4 | $ 37.8 | $ 69.2 | $ 66.3 |
| Percentage of revenue from significant customer | 14.00% | 15.00% | 14.00% | 13.00% |