Employee Stock and Benefit Plans (Stock-Based Compensation Expense Recognized in the Consolidated Financial Statements) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 183.2	$ 142.3	$ 153.6
Total related tax benefit	63.4	49.8	54.2
Total capitalized stock-based compensation included in net property, plant and equipment and inventories on the consolidated balance sheets	1.9	1.8	2.0
Options [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	41.8	37.1	46.2
Restricted Stock Units (RSUs) [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 141.4	$ 105.2	$ 107.4