Goodwill and Intangible Assets - Schedule of Intangible Assets (Detail) (USD $) In Millions, unless otherwise specified	Jun. 28, 2014	Sep. 28, 2013
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 5,348.3	$ 5,388.6
Accumulated Amortization	1,789.6	1,481.9
Developed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	3,969.9	4,009.0
Accumulated Amortization	1,317.6	1,094.5
In-process Research and Development [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	23.0	24.0
Accumulated Amortization	0	0
Customer Relationships and Contracts [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	1,101.9	1,101.9
Accumulated Amortization	362.5	296.5
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	236.8	238.1
Accumulated Amortization	98.8	81.8
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	14.1	13.0
Accumulated Amortization	8.8	8.5
Business Licenses [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	2.6	2.6
Accumulated Amortization	$ 1.9	$ 0.6