Property, Plant and Equipment (Schedule of Property, Plant and Equipment) (Details) - USD ($) $ in Millions	Sep. 25, 2015	Sep. 26, 2014
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 1,870.6	$ 1,669.0
Less: accumulated depreciation	(879.3)	(782.2)
Property, plant and equipment, net	991.3	886.8
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	49.8	47.3
Buildings
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	333.7	289.4
Capitalized Software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	120.2	94.5
Machinery and Equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,220.0	1,041.6
Construction in Progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 146.9	$ 196.2