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Pension Expense | 6 Months Ended
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Jun. 15, 2013
Compensation And Retirement Disclosure [Abstract] |
Pension Expense |
9. | PENSION EXPENSE
A summary of net pension and Supplemental Executive Retirement Plan expense recognized by the Company is as follows:
|  | 12 Weeks Ended |  |  | 24 weeks Ended |
|  | June 15, 2013 |  |  | June 16, 2012 |  |  | June 15, 2013 |  |  | June 16, 2012 |
Service cost pertaining to benefits earned during the period |  | $ | 2.1 |  |  | $ | 1.8 |  |  | $ | 4.2 |  |  | $ | 3.5 |
Interest cost on projected benefit obligations |  |  | 4.3 |  |  |  | 3.3 |  |  |  | 8.7 |  |  |  | 6.6 |
Expected return on pension assets |  |  | (4.8 | ) |  |  | (3.4 | ) |  |  | (9.7 | ) |  |  | (6.9 | )
Net amortization loss |  |  | 7.0 |  |  |  | 4.8 |  |  |  | 14.0 |  |  |  | 9.7 |
Net pension expense |  | $ | 8.6 |  |  | $ | 6.5 |  |  | $ | 17.2 |  |  | $ | 12.9 |

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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 Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 + Details
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