Stockholders' Equity (Share Based Expense Allocation) (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 02, 2015	Oct. 03, 2014	Sep. 27, 2013
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based Compensation	$ 99.8	$ 86.0	$ 71.7
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	29.3	25.6	21.4
Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Capitalized Amount	2.3	1.7	2.1
Cost of Sales [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	14.5	11.3	10.2
Research and Development Expense [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	45.4	36.2	28.2
General and Administrative Expense [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	$ 39.9	$ 38.5	$ 33.3