Income Taxes (Schedule of Deferred Taxes Balance Sheet Location) (Details) - USD ($) $ in Millions	Sep. 25, 2015	Sep. 26, 2014
Income Tax Disclosure [Abstract]
Deferred income taxes (current asset)	$ 142.7	$ 152.3
Other non-current assets	7.0	13.4
Accrued and other current liabilities	(4.7)	0.0
Deferred income taxes (non-current liability)	(3,132.4)	(2,399.6)
Net deferred tax (liability)	$ (2,987.4)	$ (2,233.9)