Fair Value (Schedule Of Financial Instruments Measured At Fair Value On Recurring Basis) (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Millions	Oct. 02, 2015	Oct. 03, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market	$ 464.6	$ 444.5
Auction rate security	2.3	2.3
Derivative Asset	3.3	0.7
Total	470.2	447.5
Purchase obligation recorded for business combinations	75.4	74.0
Derivative Liability	2.8	0.7
Contingent consideration liability recorded for business combinations	0.5	0.0
Total	78.7	74.7
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market	464.6	444.5
Auction rate security	0.0	0.0
Derivative Asset	0.0	0.0
Total	464.6	444.5
Purchase obligation recorded for business combinations	0.0	0.0
Derivative Liability	0.0	0.0
Contingent consideration liability recorded for business combinations	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	0.0	0.0
Auction rate security	0.0	0.0
Derivative Asset	0.0	0.0
Total	0.0	0.0
Purchase obligation recorded for business combinations	0.0	0.0
Derivative Liability	0.0	0.0
Contingent consideration liability recorded for business combinations	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	0.0	0.0
Auction rate security	2.3	2.3
Derivative Asset	3.3	0.7
Total	5.6	3.0
Purchase obligation recorded for business combinations	75.4	74.0
Derivative Liability	2.8	0.7
Contingent consideration liability recorded for business combinations	0.5	0.0
Total	$ 78.7	$ 74.7