Goodwill and Intangible Assets (Schedule Of Intangible Assets Subject To Amortization) (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 01, 2016	Oct. 02, 2015
Indefinite-Lived Intangible Assets [Abstract]
Gross Carrying Amount	$ 158.5	$ 158.5
Accumulated Amortization	(121.9)	(113.5)
Net Carrying Amount	$ 36.6	45.0
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period Remaining (Years)	12 months
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Amount	$ 57.2	57.2
Accumulated Amortization	(51.0)	(48.7)
Net Carrying Amount	$ 6.2	8.5
Developed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period Remaining (Years)	20 months
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Amount	$ 99.7	99.7
Accumulated Amortization	(70.9)	(64.8)
Net Carrying Amount	28.8	34.9
Trademarks [Member]
Indefinite-Lived Intangible Assets [Abstract]
Gross Carrying Amount	1.6	1.6
Net Carrying Amount	$ 1.6	$ 1.6