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Pension and Postretirement Health and Life Benefits | 3 Months Ended
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Mar. 31, 2019
Retirement Benefits, Description [Abstract] |
Pension and Postretirement Health and Life Benefits | PENSION AND POSTRETIREMENT HEALTH AND LIFE BENEFITS The components of net periodic benefit (credits) costs for the defined benefit pension plans were as follows (in millions):
| Three Months Ended March 31,
| 2019 |  | 2018
Service costs | $ | 0.8 |  |  | $ | 0.8 |
Interest costs | 7.6 |  |  | 7.2 |
Expected return on plan assets (gains) | (9.1 | ) |  | (10.2 | )
Net periodic benefit (credits) costs | $ | (0.7 | ) |  | $ | (2.2 | )
The components of net periodic benefit costs for the postretirement health and life benefit plans were as follows (in millions):
| Three Months Ended March 31,
| 2019 |  | 2018
Interest costs | $ | 1.5 |  |  | $ | 1.4 |
Net periodic benefit costs | $ | 1.5 |  |  | $ | 1.4 |
The Company reports service costs for its defined benefit pension plans and its postretirement health and life benefit plans in Cost of Sales and Selling, General and Administrative Expenses. The remaining components of net periodic benefit (credits) costs are reported as Nonoperating Components of Net Periodic Benefit Expense (Income).

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- Definition The entire disclosure for pension and other postretirement benefits. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 + Details
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