Restructuring and Other Charges (Schedule of Restructuring and Other Charges) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2016	Oct. 02, 2015	Oct. 03, 2014
Restructuring Reserve [Roll Forward]
Restructuring Reserve, beginning balance	$ 0.4	$ 0.5	$ 1.0
Current Charges	4.8	3.4	0.3
Cash Payments	(2.8)	(3.5)	(0.8)
Restructuring Reserve, ending balance	2.4	0.4	0.5
FY13 Restructuring Programs [Member] | Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve, beginning balance	0.1	0.3	0.6
Current Charges	0.0	0.0	0.3
Cash Payments	(0.1)	(0.2)	(0.6)
Restructuring Reserve, ending balance	0.0	0.1	0.3
Other Restructuring [Member] | Severance Lease and Other [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve, beginning balance	0.3	0.2	0.4
Current Charges	0.0	3.4	0.0
Cash Payments	(0.3)	(3.3)	(0.2)
Restructuring Reserve, ending balance	0.0	0.3	$ 0.2
FY16 Restructuring Programs [Member] | Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve, beginning balance	0.0
Current Charges	4.8
Cash Payments	(2.4)
Restructuring Reserve, ending balance	$ 2.4	$ 0.0