Restructuring And Related Charges (Summary Of Costs Incurred And Cumulative Costs By Cost Type) (Details) - USD ($) $ in Millions	3 Months Ended
	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