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Description Of Business And Significant Accounting Policies (Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Oct. 01, 2016 | Oct. 03, 2015 | Sep. 27, 2014
Percentage of net sales | 5.00% | 5.00% | 5.00%
Exchange (losses) gains on foreign currency transactions | $ (1.7) | $ 1.3 | $ (0.1)
Fair value of long-term debt | 251.4 | $ 250.2 |
Accounting Standards Update 2015-03 [Member] | Other Noncurrent Assets [Member] |  |  |
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification |  | 1.0 |
Accounting Standards Update 2015-17 [Member] | Other Current Assets [Member] |  |  |
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification |  | 10.7 |
Accounting Standards Update 2015-17 [Member] | Other Noncurrent Liabilities [Member] |  |  |
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification |  | 9.7 |
Interest Rate Swap And Forward Contract [Member] |  |  |
Interest rate swaps and forward contracts treated as cash flow hedges and recorded in accumulated other comprehensive income | $ 9.0 | $ (11.2) | $ 1.6

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