Segment Reporting (Reconciliation Of Total Operating Income To Consolidated Earnings Before Income Taxes) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2013	Apr. 01, 2012	Mar. 31, 2013	Apr. 01, 2012
Operating income	$ 544.1	$ 430.4	$ 1,174.6	$ 986.4
Interest income and other, net	50.8	35.3	48.0	58.5
Interest expense	(6.1)	(8.8)	(12.7)	(17.4)
Earnings before income taxes	588.8	456.9	1,209.9	1,027.5
Reportable Segment [Member]
Operating income	713.2	583.5	1,490.5	1,283.6
Unallocated Amount to Segment [Member]
Operating income	$ (169.1)	$ (153.1)	$ (315.9)	$ (297.2)