Retirement Plans - Summary of Significant Unobservable Inputs (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 29, 2013	Sep. 30, 2012	Sep. 25, 2011
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Contributions	$ 39,582	$ 38,801	$ 36,475
Pension Plan [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	0	15,167
Contributions	8,587	12,417
Transfer to level 2		(25,944)
Realizied gain		186
Unrealized gain		4,677
Transfers out		(3,361)
Benefit payments	(3,863)	(3,142)
Ending balance		$ 0