Goodwill and Intangible Assets (Schedule Of Intangible Assets) (Details) - USD ($) $ in Millions	Jun. 26, 2015	Sep. 26, 2014
Schedule of Intangible Asset by Major Class [Line Items]
Finite-lived intangible assets, gross	$ 9,164.6	$ 7,278.7
Accumulated amortization	835.3	436.7
Indefinite-lived intangible assets, gross	351.2	270.2
Trademarks
Schedule of Intangible Asset by Major Class [Line Items]
Indefinite-lived intangible assets, gross	35.0	35.0
In-process Research and Development
Schedule of Intangible Asset by Major Class [Line Items]
Indefinite-lived intangible assets, gross	316.2	235.2
Completed Technology
Schedule of Intangible Asset by Major Class [Line Items]
Finite-lived intangible assets, gross	8,860.1	7,040.1
Accumulated amortization	723.0	339.7
Licenses
Schedule of Intangible Asset by Major Class [Line Items]
Finite-lived intangible assets, gross	185.1	185.1
Accumulated amortization	96.7	87.3
Customer Relationships
Schedule of Intangible Asset by Major Class [Line Items]
Finite-lived intangible assets, gross	30.2	33.8
Accumulated amortization	3.6	0.6
Trademarks
Schedule of Intangible Asset by Major Class [Line Items]
Finite-lived intangible assets, gross	82.5	13.0
Accumulated amortization	5.3	4.1
Other
Schedule of Intangible Asset by Major Class [Line Items]
Finite-lived intangible assets, gross	6.7	6.7
Accumulated amortization	$ 6.7	$ 5.0