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Postretirement benefits other than pensions (Other Postretirement Benefit Plans, Defined Benefit) | 12 Months Ended
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Dec. 30, 2012
Other Postretirement Benefit Plans, Defined Benefit |
Defined Benefit Plan Disclosure [Line Items] |
Pension and Other Postretirement Benefits Disclosure | NOTE 9 Postretirement benefits other than pensions The company provides health care and life insurance benefits to certain retired employees who meet age and service requirements. Most of the company’s retirees contribute to the cost of these benefits and retiree contributions are increased as actual benefit costs increase. The cost of providing retiree health care and life insurance benefits is actuarially determined and accrued over the service period of the active employee group. The company’s policy is to fund benefits as claims and premiums are paid. The company eliminated postretirement medical and life insurance benefits for most U.S. employees under 50 years of age effective Jan. 1, 2006. The company uses a Dec. 31 measurement date for these plans. Postretirement benefit cost for health care and life insurance included the following components:
In thousands of dollars
| 2012 | 2011 | 2010
Service cost – benefits earned during the period | $ | 545 |  | $ | 611 |  | $ | 713 |
Interest cost on net benefit obligation | 7,744 |  | 9,205 |  | 10,606 |
Amortization of prior service credit | (19,190 | ) | (19,510 | ) | (19,377 | )
Amortization of actuarial loss | 1,943 |  | 5,444 |  | 4,949 |
Net periodic postretirement benefit | $ | (8,958 | ) | $ | (4,250 | ) | $ | (3,109 | )
The table below provides a reconciliation of benefit obligations and funded status of the company’s postretirement benefit plans:
In thousands of dollars
| Dec. 30, 2012 | Dec. 25, 2011
Change in benefit obligations |  |
Net benefit obligations at beginning of year | $ | 184,131 |  | $ | 191,282 |
Service cost | 545 |  | 611 |
Interest cost | 7,744 |  | 9,205 |
Plan participants’ contributions | 10,362 |  | 10,896 |
Actuarial (gain) loss | (5,877 | ) | 2,482 |
Gross benefits paid | (29,245 | ) | (32,386 | )
Federal subsidy on benefits paid | 1,932 |  | 2,041 |
Net benefit obligations at end of year | $ | 169,592 |  | $ | 184,131 |
Change in plan assets |  |
Fair value of plan assets at beginning of year | $ | — |  | $ | — |
Employer contributions | 18,883 |  | 21,490 |
Plan participants’ contributions | 10,362 |  | 10,896 |
Gross benefits paid | (29,245 | ) | (32,386 | )
Fair value of plan assets at end of year | $ | — |  | $ | — |
Benefit obligation at end of year | $ | 169,592 |  | $ | 184,131 |
Accrued postretirement benefit cost: |  |
Current | $ | 19,655 |  | $ | 20,432 |
Noncurrent | $ | 149,937 |  | $ | 163,699 |
Net actuarial losses recognized in accumulated other comprehensive loss were $23.5 million in 2012 and $30.8 million in 2011. Prior service credits recognized in accumulated other comprehensive loss were $24.9 million as of Dec. 30, 2012 and $44.1 million as of Dec. 25, 2011. The actuarial loss and prior service credit estimated to be amortized from accumulated other comprehensive loss into net periodic benefit cost in 2013 are $1.9 million and $9.2 million, respectively. Other changes in plan assets and benefit obligations recognized in other comprehensive (loss) consist of the following:
In thousands of dollars
| 2012
Current year actuarial gain | $ | 5,364 |
Amortization of actuarial loss | 1,943 |
Amortization of prior service credit | (19,190 | )
Total | $ | (11,883 | )
Postretirement benefit costs: The following assumptions were used to determine postretirement benefit cost:
| 2012 | 2011 | 2010
Discount rate | 4.75 | % | 5.30 | % | 5.80 | %
Health care cost trend rate assumed for next year | 6.50 | % | 6.50 | % | 6.50 | %
Ultimate trend rate | 5.00 | % | 5.00 | % | 5.00 | %
Year that ultimate trend rate is reached | 2016 |  | 2015 |  | 2014 |
Benefit obligations and funded status: The following assumptions were used to determine the year-end benefit obligation:
| Dec. 30, 2012 | Dec. 25, 2011
Discount rate | 3.80 | % | 4.75 | %
Health care cost trend rate assumed for next year | 6.50 | % | 6.50 | %
Ultimate trend rate | 5.00 | % | 5.00 | %
Year that ultimate trend rate is reached | 2016 |  | 2015 |
Assumed health care cost trend rates have an effect on the amounts reported for the health care plans. The effect of a 1% change in the health care cost trend rate would result in a change of approximately $7.0 million in the 2012 postretirement benefit obligation and a $0.3 million change in the aggregate service and interest components of the 2012 expense. Cash flows: The company expects to make the following benefit payments, which reflect expected future service, and to receive the following federal subsidy benefits as appropriate:
In thousands of dollars | Benefit Payments | Subsidy Benefits
2013 | $ | 19,655 |  | $ | 4,360 |
2014 | $ | 19,154 |  | $ | 3,626 |
2015 | $ | 18,559 |  | $ | 3,592 |
2016 | $ | 17,751 |  | $ | 3,501 |
2017 | $ | 16,927 |  | $ | 3,439 |
2018-2022 | $ | 69,422 |  | $ | 15,361 |
The amounts above exclude the participants’ share of the benefit cost. The company’s policy is to fund benefits as claims and premiums are paid.

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- Definition The entire disclosure for pension and other postretirement benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 7, 21, 22 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS106-2 -Paragraph 20, 21, 22 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Implementation Guide (Q and A) -Number FAS88 -Paragraph 63 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 106 -Paragraph 518 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5, 6, 7, 8 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 8 -Subparagraph m -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 264 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 30 -Paragraph 26 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 03-2 -Paragraph 8 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 12: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph h -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 13: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 14: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph q -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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