Leases (Details) (USD $)	12 Months Ended
	Sep. 30, 2012	Oct. 02, 2011	Oct. 03, 2010
Leases
Expense associated with operating leases	$ 76,600,000	$ 71,900,000	$ 60,900,000
Operating lease commitments
2013	68,573,000
2014	53,595,000
2015	37,823,000
2016	20,340,000
2017	10,727,000
Beyond	7,710,000
Total	198,768,000
Capital lease commitments
2013	1,246,000
2014	836,000
2015	636,000
2016	376,000
Total	3,094,000
Less: Amounts representing interest	244,000
Net present value	2,850,000
Lease contract termination costs	$ 1,261,000	$ 1,281,000