Income Taxes (Provision for Income Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 01, 2017	Oct. 02, 2016	Sep. 27, 2015
Income Tax Disclosure [Abstract]
Current taxes: U.S. federal	$ 931.0	$ 704.1	$ 801.0
Current taxes: U.S. state and local	170.8	166.5	150.1
Current taxes: Foreign	216.6	218.5	172.2
Total current taxes	1,318.4	1,089.1	1,123.3
Deferred taxes: U.S. federal	121.2	351.3	56.5
Deferred taxes: U.S. state and local	14.2	25.8	4.0
Deferred taxes: Foreign	(21.2)	(86.5)	(40.1)
Total deferred taxes	114.2	290.6	20.4
Total income tax expense	$ 1,432.6	$ 1,379.7	$ 1,143.7