Employee Benefit Plans Activity in AOCI related to Pension Plans (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 29, 2012	Oct. 01, 2011
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Balance at beginning of period	$ (234,128)	$ (182,336)
Net actuarial loss during period	(90,463)	(97,899)
Tax effect	32,990	37,290
Net deferral in AOCI of acturial loss	(57,473)	(60,609)
Reclassification from AOCI into earnings	17,969	13,875
Tax effect	(6,792)	(5,058)
Net reclassification from AOCI into earnings	11,177	8,817
Balance at end of period	$ (280,424)	$ (234,128)