Debt Additional Details (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				3 Months Ended		12 Months Ended			3 Months Ended			3 Months Ended				3 Months Ended			3 Months Ended
	Dec. 30, 2012	Jan. 01, 2012	Dec. 30, 2012 Senior Notes [Member]	Sep. 30, 2012 Senior Notes [Member]	Dec. 30, 2012 Revolving Credit Facility [Member]	Sep. 30, 2012 Revolving Credit Facility [Member]	Sep. 30, 2012 Unsecured Debt [Member]	Dec. 30, 2012 Secured Debt [Member]	Sep. 30, 2012 Secured Debt [Member]	Dec. 30, 2012 Notes 6.375% due 2020 [Member]	Dec. 30, 2012 Notes 6.375% due 2020 [Member] Unsecured Debt [Member]	Sep. 30, 2012 Notes 6.375% due 2020 [Member] Unsecured Debt [Member]	Dec. 30, 2012 Senior Notes [Member]	Jan. 01, 2012 Senior Notes [Member]	Dec. 30, 2012 6.75% Notes [Member] Unsecured Debt [Member]	Sep. 30, 2012 6.75% Notes [Member] Unsecured Debt [Member]	Dec. 30, 2012 Notes 6.625% due 2022 [Member]	Dec. 30, 2012 Notes 6.625% due 2022 [Member] Unsecured Debt [Member]	Sep. 30, 2012 Notes 6.625% due 2022 [Member] Unsecured Debt [Member]	Dec. 30, 2012 Canada, Dollars Senior Notes [Member]
Debt Instrument [Line Items]
Secured Debt								$ 950,000	$ 950,000
Unsecured Debt											520,000	0			300,000	300,000		570,000	0
Additional Borrowings, Par Value										520,000			800,000				570,000			100,000
Debt Issuance Cost	43,590	4,020			323					12,860			16,327				14,080
Line of Credit Facility, Maximum Borrowing Capacity					400,000	300,000
Payments of Debt Extinguishment Costs														2,421
Write off debt issuance costs	4,600	0											5,485
Payments of Financing Costs														18,748
Senior Notes			799,056	370,175
Percentage of Holders Needed to Accelerate Bonds							25.00%
Line of Credit Facility, Current Borrowing Capacity					133,267
Line of Credit Lender Restrictions					7,942
Letters of Credit Outstanding, Amount	$ 25,412