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Restructuring And Related Charges (Summary Of Costs Incurred And Cumulative Costs By Cost Type) (Details) - USD ($) $ in Millions | 3 Months Ended
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Dec. 30, 2018 | Dec. 31, 2017
Restructuring Cost and Reserve [Line Items] |  |
Restructuring and related charges | $ 9.1 | $ 17.1
Cumulative costs | 98.5 |
Future costs to be incurred | 2.1 |
Termination Benefits [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring and related charges | 1.6 | 1.6
Cumulative costs | 4.9 |
Future costs to be incurred | 0.9 |
Other Costs [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring and related charges | 7.5 | $ 15.5
Cumulative costs | 93.6 |
Future costs to be incurred | $ 1.2 |

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