Stockholders' Equity (Share Based Expense Allocation) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Oct. 03, 2014	Sep. 27, 2013	Sep. 28, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based Compensation	$ 86.0	$ 71.7	$ 72.2
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	25.6	21.4	22.2
Cost of Sales [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	11.3	10.2	9.4
Research and Development Expense [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	36.2	28.2	28.0
General and Administrative Expense [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	$ 38.5	$ 33.3	$ 34.8