The Company and Its Significant Accounting Policies Property, Plant and Equipment (Details)	12 Months Ended
	Sep. 25, 2011
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life, maximum (in years)	30
Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life, maximum (in years)	15
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life, maximum (in years)	15
Buildings on Leased Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life, maximum (in years)	20
Other Property, Plant and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life, maximum (in years)	25
Property, plant and equipment, useful life, minimum (in years)	2