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 |