Pension, Postretirement, and Postemployement Obligations (Tables)

9 Months Ended

Jun. 24, 2012

Pension Postretirement And Postemployment Defined Benefit Plans [Abstract]

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

The net periodic cost (benefit) components of our pension and postretirement medical plans are as follows:

PENSION PLANS	13 Weeks Ended				39 Weeks Ended
(Thousands of Dollars)	June 24 2012		June 26 2011		June 24 2012		June 26 2011
Service cost for benefits earned during the period	7		42		21		163
Interest cost on projected benefit obligation	1,994		2,088		5,982		6,229
Expected return on plan assets	(2,223	)	(2,433	)	(6,669	)	(7,226	)
Amortization of net loss	593		203		1,779		629
Amortization of prior service benefit	(34	)	(34	)	(102	)	(103	)
	337		(134	)	1,011		(308	)
POSTRETIREMENT MEDICAL PLANS	13 Weeks Ended				39 Weeks Ended
(Thousands of Dollars)	June 24 2012		June 26 2011		June 24 2012		June 26 2011
Service cost for benefits earned during the period	182		232		546		715
Interest cost on projected benefit obligation	277		350		831		1,278
Expected return on plan assets	(532	)	(563	)	(1,596	)	(1,675	)
Amortization of net gain	(613	)	(598	)	(1,839	)	(1,872	)
Amortization of prior service benefit	(365	)	(380	)	(1,095	)	(1,091	)
Curtailment gains	—		(3,974	)	—		(16,137	)
	(1,051	)	(4,933	)	(3,153	)	(18,782	)