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Employee Benefits (Tables) | 6 Months Ended
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Jun. 30, 2021
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract] |
Schedule of Net Periodic Costs | The components of net periodic cost for the Domestic Pension Plan, the significant foreign pension plans and the domestic postretirement benefit plan are listed below.
| Domestic Pension Plan |  | Foreign Pension Plans |  | Domestic Postretirement Benefit Plan
Three Months Ended June 30, | 2021 |  | 2020 |  | 2021 |  | 2020 |  | 2021 |  | 2020
Service cost | $ | 0.0 |  |  | $ | 0.0 |  |  | $ | 1.1 |  |  | $ | 1.1 |  |  | $ | 0.0 |  |  | $ | 0.0 |
Interest cost | 0.8 |  |  | 0.9 |  |  | 2.0 |  |  | 2.3 |  |  | 0.1 |  |  | 0.2 |
Expected return on plan assets | (1.4) |  |  | (1.4) |  |  | (5.3) |  |  | (4.6) |  |  | 0.0 |  |  | 0.0 |
Amortization of: |  |  |  |  |  |  |  |  |  |  |
Prior service cost | 0.0 |  |  | 0.0 |  |  | 0.1 |  |  | 0.1 |  |  | 0.0 |  |  | 0.0 |
Unrecognized actuarial losses | 0.3 |  |  | 0.4 |  |  | 1.7 |  |  | 1.3 |  |  | 0.4 |  |  | 0.0 |
Net periodic cost | $ | (0.3) |  |  | $ | (0.1) |  |  | $ | (0.4) |  |  | $ | 0.2 |  |  | $ | 0.5 |  |  | $ | 0.2 |
| Domestic Pension Plan |  | Foreign Pension Plans |  | Domestic Postretirement Benefit Plan
Six Months Ended June 30, | 2021 |  | 2020 |  | 2021 |  | 2020 |  | 2021 |  | 2020
Service cost | $ | 0.0 |  |  | $ | 0.0 |  |  | $ | 2.2 |  |  | $ | 2.3 |  |  | $ | 0.0 |  |  | $ | 0.0 |
Interest cost | 1.5 |  |  | 1.9 |  |  | 4.0 |  |  | 4.6 |  |  | 0.3 |  |  | 0.4 |
Expected return on plan assets | (2.8) |  |  | (2.8) |  |  | (10.5) |  |  | (9.3) |  |  | 0.0 |  |  | 0.0 |
Amortization of: |  |  |  |  |  |  |  |  |  |  |
Prior service cost | 0.0 |  |  | 0.0 |  |  | 0.1 |  |  | 0.1 |  |  | 0.0 |  |  | 0.0 |
Unrecognized actuarial losses | 0.8 |  |  | 0.8 |  |  | 3.4 |  |  | 2.7 |  |  | 0.5 |  |  | 0.1 |
Net periodic cost | $ | (0.5) |  |  | $ | (0.1) |  |  | $ | (0.8) |  |  | $ | 0.4 |  |  | $ | 0.8 |  |  | $ | 0.5 |

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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=123447040&loc=d3e1928-114920 + Details
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