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Goodwill and Intangible Assets (Schedule of Intangible Assets Excluding Goodwill) (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Oct. 03, 2014
Sep. 27, 2013
Intangible Assets Excluding Goodwill [Line Items]    
Intangible Assets Gross Excluding Goodwill $ 161.1 $ 175.3
Intangible Assets Excluding Goodwill Accumulated Amortization 86.1 110.5
Intangible Assets, Net (Excluding Goodwill) 75.0 64.8
Customer Relationships [Member]
    
Intangible Assets Excluding Goodwill [Line Items]    
Amortized Intangible Assets, Weighted Average Useful Life 2 years  
Intangible Assets, Gross Carrying Amount 57.2 78.7
Amortized Intangible Assets, Accumulated Amortization 39.4 49.3
Intangible Assets, Net Carrying Amount 17.8 29.4
Developed Technology and Other [Member]
    
Intangible Assets Excluding Goodwill [Line Items]    
Amortized Intangible Assets, Weighted Average Useful Life 2 years 6 months  
Intangible Assets, Gross Carrying Amount 96.2 88.9
Amortized Intangible Assets, Accumulated Amortization 40.6 55.3
Intangible Assets, Net Carrying Amount 55.6 33.6
In-Process Research and Development [Member]
    
Intangible Assets Excluding Goodwill [Line Items]    
Amortized Intangible Assets, Weighted Average Useful Life 0 years  
Intangible Assets, Gross Carrying Amount 6.1 6.1
Amortized Intangible Assets, Accumulated Amortization 6.1 5.9
Intangible Assets, Net Carrying Amount 0 0.2
Trademarks [Member]
    
Intangible Assets Excluding Goodwill [Line Items]    
Indefinite-Lived Trademarks 1.6 1.6
Indefinite-lived Intangible Assets $ 1.6 $ 1.6