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Retirement Plans (Tables) | 9 Months Ended
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Sep. 26, 2020
Retirement Benefits [Abstract] |
Summary of Net Pension and SERP Expense Recognized | The following is a summary of net pension and Supplemental Executive Retirement Plan (“SERP”) expense recognized by the Company.
| Quarter Ended |  | Year-To-Date Ended
(In millions) | September 26, 2020 |  | September 28, 2019 |  | September 26, 2020 |  | September 28, 2019
Service cost pertaining to benefits earned during the period | $ | 1.6 |  |  | $ | 1.3 |  |  | $ | 4.8 |  |  | $ | 4.1 |
Interest cost on projected benefit obligations | 3.6 |  |  | 3.8 |  |  | 10.7 |  |  | 11.4 |
Expected return on pension assets | (4.7) |  |  | (4.4) |  |  | (14.0) |  |  | (13.3) |
Net amortization loss | 1.6 |  |  | 0.7 |  |  | 4.9 |  |  | 2.0 |
Net pension expense | $ | 2.1 |  |  | $ | 1.4 |  |  | $ | 6.4 |  |  | $ | 4.2 |

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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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