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Retirement Plans | 3 Months Ended
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Mar. 31, 2018
Compensation and Retirement Disclosure [Abstract] |
Retirement Plans | RETIREMENT PLANS The following is a summary of net pension and Supplemental Executive Retirement Plan (“SERP”) expense recognized by the Company.
| Quarter Ended
(In millions) | March 31, 2018 |  | April 1, 2017
Service cost pertaining to benefits earned during the period | $ | 1.6 |  |  | $ | 1.8 |
Interest cost on projected benefit obligations | 4.1 |  |  | 4.4 |
Expected return on pension assets | (5.0 | ) |  | (4.9 | )
Net amortization loss | 0.8 |  |  | 2.4 |
Net pension expense | $ | 1.5 |  |  | $ | 3.7 |
The non-service cost components of net pension expense is recorded in the Other expense (income), net line item on the consolidated condensed financial statements.

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