Restructuring And Related Charges (Summary Of Costs Incurred And Cumulative Costs By Cost Type) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 28, 2020	Jun. 30, 2019	Jun. 28, 2020	Jun. 30, 2019
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	$ 12.2	$ 20.7	$ 61.6	$ 42.2
Cumulative costs	113.9		113.9
Future costs to be incurred	74.8		74.8
Termination Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	0.5	4.0	11.9	7.6
Cumulative costs	19.1		19.1
Future costs to be incurred	3.5		3.5
Other Costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	11.7	$ 16.7	49.7	$ 34.6
Cumulative costs	94.8		94.8
Future costs to be incurred	$ 71.3		$ 71.3