Financing (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Dec. 29, 2012	Sep. 29, 2012
Line of Credit Facility [Abstract]
Line of Credit Facility, Expiration Date	Sep. 01, 2017
Line of credit facility, borrowing capacity	$ 100
Letters of credit outstanding, amount	10.3	10.1
Line of credit facility, remaining borrowing capacity	$ 89.7	$ 89.9