Postretirement Obligations (Tables) (Other Postretirement Benefit Plans, Defined Benefit [Member])

12 Months Ended

Sep. 30, 2012

Other Postretirement Benefit Plans, Defined Benefit [Member]

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

The net periodic postretirement benefit cost components for our postretirement plans are as follows:

(Thousands of Dollars)	2012		2011		2010
Service cost for benefits earned during the year	728		927		361
Interest cost on projected benefit obligation	1,109		1,600		2,971
Expected return on plan assets	(2,129	)	(2,248	)	(2,274	)
Amortization of net actuarial gain	(2,451	)	(2,467	)	(2,447	)
Amortization of prior service benefit	(1,459	)	(1,455	)	(1,994	)
Curtailment gains	—		(16,137	)	(43,008	)
Net periodic postretirement benefit	(4,202	)	(19,780	)	(46,391	)

Schedule of Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets [Table Text Block]

Changes in benefit obligations and plan assets are as follows:

(Thousands of Dollars)	2012		2011
Benefit obligation, beginning of year	26,472		50,482
Service cost	728		927
Interest cost	1,109		1,600
Actuarial (gain) loss	5,269		(2,311	)
Benefits paid, net of premiums received	(2,965	)	(2,922	)
Changes in plan provisions	—		(5,931	)
Curtailment gains	—		(15,535	)
Medicare Part D subsidies	115		162
Benefit obligation, end of year	30,728		26,472
Fair value of plan assets, beginning of year	38,529		41,447
Actual return on plan assets	2,127		19
Employer contributions (reimbursements)	(690	)	1,347
Benefits paid, net of premiums and Medicare Part D subsidies received	(2,851	)	(2,760	)
Benefits paid for active employees	(2,852	)	(1,524	)
Fair value of plan assets at measurement date	34,263		38,529
Funded status - benefit obligation less than plan assets	(3,535	)	(12,057	)

Schedule of Amounts Recognized in Balance Sheet [Table Text Block]

Disaggregated amounts recognized in the Consolidated Balance Sheets are as follows:

(Thousands of Dollars)	September 30 2012	September 25 2011
Noncurrent assets	7,551	14,934
Postretirement benefit obligations	4,016	2,877
Accumulated other comprehensive income (before income tax benefit)	30,344	42,379

Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]

Amounts recognized in accumulated other comprehensive income are as follows:

(Thousands of Dollars)	September 30 2012	September 25 2011
Unrecognized net actuarial gain	16,570	27,145
Unrecognized prior service benefit	13,774	15,234
	30,344	42,379

Schedule of Assumptions Used [Table Text Block]

Weighted-average assumptions used to determine benefit obligations are as follows:

(Percent)	September 30 2012	September 25 2011
Discount rate	3.85	4.4
Expected long-term return on plan assets	4.5	5.75

Weighted-average assumptions used to determine net periodic benefit cost are as follows:

(Percent)	2012	2011	2010
Discount rate	4.4	4.8	5.5
Expected long-term return on plan assets	5.75	5.75	5.75

Schedule of Health Care Cost Trend Rates [Table Text Block]

Assumed health care cost trend rates are as follows:

(Percent)	September 30 2012	September 25 2011
Health care cost trend rates	9.0	9.0
Rate to which the cost trend rate is assumed to decline (the “Ultimate Trend Rate”)	5.0	5.0
Year in which the rate reaches the Ultimate Trend Rate	2020	2019

Schedule of Effect of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates [Table Text Block]

A one percentage point change in assumed health care cost trend rates would have the following annualized effects on reported amounts for 2012:

	One Percentage Point
(Thousands of Dollars)	Increase	Decrease
Effect on net periodic postretirement benefit	53	(48	)
Effect on postretirement benefit obligation	1,452	(1,306	)

Schedule of Allocation of Plan Assets [Table Text Block]

The weighted-average asset allocation of our postretirement assets is as follows:

(Percent)		Actual Allocation
Asset Class	Current Policy Allocation	September 30 2012	September 25 2011
Equity securities	10-30	21	8
Debt securities	70-90	75	85
Cash and cash equivalents	—	2	7
Receivables, net	—	2	—

Schedule of Changes in Fair Value of Plan Assets [Table Text Block]

The fair value hierarchy of postretirement assets at September 30, 2012 is as follows:

(Thousands of Dollars)	Level 1	Level 2	Level 3
Cash and cash equivalents	692	—	—
Receivables, net	803	—	—
Domestic equity securities	4,385	2,069	—
International equity securities	—	671	—
Debt securities	—	25,643	—

Schedule of Expected Benefit Payments [Table Text Block]

We anticipate future benefit payments to be paid either with future contributions to the plan or directly from plan assets, as follows:

(Thousands of Dollars)	Gross Payments	Less Medicare Part D Subsidy		Net Payments
2013	3,280	(220	)	3,060
2014	3,080	(230	)	2,850
2015	2,980	(230	)	2,750
2016	2,960	(230	)	2,730
2017	2,900	(230	)	2,670
2018-2022	13,280	(1,100	)	12,180