Equity and Cost Investments (Summarized Combined Financial Information of Equity Method Investees) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 27, 2015	Sep. 28, 2014	Sep. 29, 2013
Equity Method Investments and Joint Ventures [Abstract]
Current assets	$ 402.8	$ 701.3
Noncurrent assets	578.8	873.9
Current liabilities	490.0	615.6
Noncurrent liabilities	38.7	79.1
Net revenues	2,688.0	3,461.3	$ 3,018.7
Operating income	426.4	467.7	434.8
Net earnings	$ 392.1	$ 382.6	$ 358.0