Income Taxes (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
	Jun. 29, 2012	Jun. 29, 2012
Income Tax Examination [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate	35.00%	35.00%
Valuation Allowance, Amount	$ 45.1	$ 45.1
Deferred Taxes, Business Combination, Valuation Allowance, Available to Reduce Income Tax Expense	11.7	11.7
Future Taxable Income to Recognize Deferred Tax Assets	203.1	203.1
Unrecognized Tax Benefits, Increases Resulting from Current Period Tax Positions	4.0
Unrecognized Tax Benefits	52.1	52.1
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	38.3	38.3
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	0.6	0.6
State and Local Jurisdiction [Member]
Income Tax Examination [Line Items]
Valuation Allowance, Amount	31.6	31.6
Foreign Country [Member]
Income Tax Examination [Line Items]
Valuation Allowance, Amount	13.5	13.5
AATI [Member] | State and Local Jurisdiction [Member]
Income Tax Examination [Line Items]
Valuation Allowance, Amount	$ 5.5	$ 5.5