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Pension Expense | 9 Months Ended
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Sep. 07, 2013
Compensation and Retirement Disclosure [Abstract] |
Pension Expense | PENSION EXPENSE A summary of net pension and Supplemental Executive Retirement Plan expense recognized by the Company is as follows:
| 12 Weeks Ended |  | 36 Weeks Ended
| September 7, 2013 |  | September 8, 2012 |  | September 7, 2013 |  | September 8, 2012
Service cost pertaining to benefits earned during the period | $ | 2.0 |  |  | $ | 1.8 |  |  | $ | 6.2 |  |  | $ | 5.3 |
Interest cost on projected benefit obligations | 4.3 |  |  | 3.3 |  |  | 13.0 |  |  | 9.9 |
Expected return on pension assets | (4.8 | ) |  | (3.4 | ) |  | (14.5 | ) |  | (10.3 | )
Net amortization loss | 7.1 |  |  | 4.8 |  |  | 21.1 |  |  | 14.5 |
Net pension expense | $ | 8.6 |  |  | $ | 6.5 |  |  | $ | 25.8 |  |  | $ | 19.4 |

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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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