Leases (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 27, 2015	Sep. 28, 2014	Sep. 29, 2013
Leases [Abstract]
Sublease income recognized	$ 11.9	$ 13.3	$ 9.3
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	9,641.8	8,581.1
Accumulated depreciation	5,553.5	$ 5,062.1
Assets Held under Financing Leases [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	66.8
Accumulated depreciation	$ 2.5