Fair Value (Schedule Of Financial Instruments Measured At Fair Value On Recurring Basis) (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Millions	Jan. 01, 2016	Oct. 02, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	$ 644.6	$ 464.6
Auction rate security	2.3	2.3
Foreign currency derivative assets	3.3	3.3
Total	650.2	470.2
Purchase obligation recorded for business combinations	75.7	75.4
Foreign currency derivative liabilities	2.7	2.8
Business Combination, Contingent Consideration, Liability	0.5	0.5
Total	78.9	78.7
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	644.6	464.6
Auction rate security	0.0	0.0
Foreign currency derivative assets	0.0	0.0
Total	644.6	464.6
Purchase obligation recorded for business combinations	0.0	0.0
Foreign currency derivative liabilities	0.0	0.0
Business Combination, Contingent Consideration, Liability	0.0	0.0
Total	0.0	0.0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	0.0	0.0
Auction rate security	0.0	0.0
Foreign currency derivative assets	0.0	0.0
Total	0.0	0.0
Purchase obligation recorded for business combinations	0.0	0.0
Foreign currency derivative liabilities	0.0	0.0
Business Combination, Contingent Consideration, Liability	0.0	0.0
Total	0.0	0.0
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	0.0	0.0
Auction rate security	2.3	2.3
Foreign currency derivative assets	3.3	3.3
Total	5.6	5.6
Purchase obligation recorded for business combinations	75.7	75.4
Foreign currency derivative liabilities	2.7	2.8
Business Combination, Contingent Consideration, Liability	0.5	0.5
Total	$ 78.9	$ 78.7