Goodwill and Intangible Assets (Schedule Of Intangible Assets Subject To Amortization) (Details) - USD ($) $ in Millions	6 Months Ended
	Apr. 01, 2016	Oct. 02, 2015
Finite-Lived Intangible Assets [Line Items]
Total intangible assets, Gross Carrying Amount	$ 167.5	$ 158.5
Total intangible assets, Accumulated Amortization	(130.5)	(113.5)
Total intangible assets, Net Carrying Amount	$ 37.0	45.0
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period Remaining (Years)	9 months 18 days
Gross Carrying Amount	$ 57.2	57.2
Accumulated Amortization	(53.2)	(48.7)
Net Carrying Amount	$ 4.0	8.5
Developed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period Remaining (Years)	13 years 2 months 12 days
Gross Carrying Amount	$ 108.7	99.7
Accumulated Amortization	(77.3)	(64.8)
Net Carrying Amount	31.4	34.9
Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Indefinite-Lived Trademarks	1.6	1.6
Nonamortizing intangible assets, Gross Carrying Amount	$ 1.6	$ 1.6