Income Taxes Narrative (Details) (USD $)	12 Months Ended
	Sep. 28, 2012	Sep. 30, 2011	Oct. 01, 2010
Income Tax Disclosure [Abstract]
Current taxes payable		$ (8,400,000)
Open Tax Years Jurisdiction [Line Items]
Current taxes receivable	3,100,000
Reduction of uncertain tax position		17,000,000
Operating loss carryforwards	30,300,000
Valuation allowance	15,200,000
Unrecognized tax benefits resulting in net operating loss carryforward	8,800,000
Foreign tax credit carryforwards	6,700,000
Current deferred tax assets	77,900,000	93,500,000
Deferred tax liabilities	632,300,000	705,500,000
Gross unrecognized tax benefits	31,977,000	34,040,000	49,274,000
Accrued for interest and penalties	8,400,000	9,600,000
Interest and penalties	$ (1,000,000)	$ (2,500,000)
Number of Significant States and Foreign Taxing Jurisdictions in which Entity Operates	20
Minimum
Open Tax Years Jurisdiction [Line Items]
Open Tax Years	1
Maximum
Open Tax Years Jurisdiction [Line Items]
Open Tax Years	10