Employee Stock Plans (Stock Option And RSU Transactions) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Jan. 01, 2012
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, October 2, 2011, Stock Option	45.3
Granted, Stock Option	3.1
Options exercised, Stock Option	(5.5)
Forfeited/expired, Stock Option	(0.7)
Options outstanding, January 1, 2012, Stock Option	42.2
Total unrecognized stock-based compensation expense, net of estimated forfeitures, as of January 1, 2012	$ 63.8
Restricted Stock Units ("RSUs") [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested RSUs, October 2, 2011, RSUs	8.3
Granted, RSUs	3.9
RSUs vested, RSUs	(3.9)
Forfeited/expired, RSUs	(0.2)
Nonvested RSUs, January 1, 2012, RSUs	8.1
Total unrecognized stock-based compensation expense, net of estimated forfeitures, as of January 1, 2012	$ 155.7