Indebtedness (Narrative) (Details) - USD ($) $ in Thousands				12 Months Ended
	Feb. 10, 2015	May. 22, 2014	Dec. 19, 2013	Oct. 03, 2015	Sep. 27, 2014	Sep. 28, 2013	Nov. 21, 2014	Mar. 21, 2011
Line of Credit Facility
Applicable margin in interest rate of revolving credit facility, basis points				1.63%
Payments of Premiums on Redemption of Senior Subordinated Notes				$ 0	$ 6,945	$ 0
Pledged Assets, Net Book Value				1,508,996
Unused borrowing capacity				$ 420,193
U.S. revolving credit facility
Line of Credit Facility
Interest rate on other revolving credit facilities				1.80%
Line of Credit Facility, Current Borrowing Capacity		$ 1,100,000						$ 900,000
Expansion option to increase credit facility		$ 200,000
Unused borrowing capacity				$ 408,227
5.25% senior notes
Line of Credit Facility
Debt Instrument, Face Amount							$ 300,000
Debt Instrument, Interest Rate, Stated Percentage							5.25%
Proceeds from Debt, Net of Issuance Costs				$ 294,430
Securitization program
Line of Credit Facility
Interest rate on other revolving credit facilities				0.90%
Maximum credit facility amount that can borrow	$ 100,000
Percentage of borrowing capacity on the Securitization Program	80.00%
Percentage of borrowing base on the Securitization Program	100.00%
Minimum borrowing requirement for the Securitization Program				$ 80,000
7.25% subordinated notes
Line of Credit Facility
Debt Instrument, Interest Rate, Stated Percentage			7.25%
Debt Instrument, Redemption Price, Percentage			103.625%
Early Repayment of Subordinated Debt			$ 200,000
Payments of Premiums on Redemption of Senior Subordinated Notes			6,945
Write off of Deferred Debt Issuance Cost			$ 1,057
Senior debt
Line of Credit Facility
2016				34
2017				100,033
2018				24
2019				675,010
2020				0
Thereafter				$ 300,000
Foreign line of credit
Line of Credit Facility
Interest rate on other revolving credit facilities				1.00%