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Fair Value Measurements (Asset Fair Market Value Adjustments Charged To Earnings) (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | |
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Sep. 30, 2012
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Oct. 02, 2011
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Property, Plant And Equipment [Member]
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| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Carrying value before adjustment | $ 21.5 | $ 8.8 |
| Fair value adjustment | (14.4) | (5.9) |
| Carrying value after adjustment | 7.1 | 2.9 |
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Other Assets [Member]
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| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Carrying value before adjustment | 22.1 | |
| Fair value adjustment | (22.1) | |
| Carrying value after adjustment | $ 0 | |