Goodwill and Intangible Assets (Schedule of Intangible Assets Excluding Goodwill) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2016	Oct. 02, 2015
Intangible Assets Excluding Goodwill [Line Items]
Gross carrying amount	$ 213.9	$ 158.5
Accumulated amortization	(146.9)	(113.5)
Net carrying amount	67.0	45.0
Trademarks [Member]
Intangible Assets Excluding Goodwill [Line Items]
Indefinite-lived trademarks, gross carrying amounts	1.6	1.6
Indefinite-lived intangible assets, net carrying amount	$ 1.6	1.6
Customer Relationships [Member]
Intangible Assets Excluding Goodwill [Line Items]
Weighted average amortization period remaining (years)	4 years 2 months 12 days
Gross carrying amount	$ 78.5	57.2
Accumulated amortization	(57.7)	(48.7)
Net carrying amount	$ 20.8	8.5
Developed Technology and Other [Member]
Intangible Assets Excluding Goodwill [Line Items]
Weighted average amortization period remaining (years)	5 years 9 months 18 days
Gross carrying amount	$ 133.8	99.7
Accumulated amortization	(89.2)	(64.8)
Net carrying amount	$ 44.6	$ 34.9