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v3.19.1

Defined Benefit Plans (Tables) | 3 Months Ended
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Mar. 31, 2019
Components of Net Periodic Benefit Cost for Pension and Postretirement Benefits | The components of net periodic benefit cost for pension and postretirement benefits for the three months ended March 31, 2019 and 2018 were as follows:
|  | Three Months Ended March 31, |
|  | Pension Benefits |  |  | Postretirement Benefits |
(In millions) |  | 2019 |  |  | 2018 |  |  | 2019 |  |  | 2018 |
Service cost |  | $ | 0.1 |  |  | $ | 0.2 |  |  | $ | — |  |  | $ | — |
Interest cost |  |  | 8.2 |  |  |  | 7.6 |  |  |  | — |  |  |  | — |
Expected return on plan assets |  |  | (8.8 | ) |  |  | (10.3 | ) |  |  | — |  |  |  | — |
Net periodic benefit income |  | $ | (0.5 | ) |  | $ | (2.5 | ) |  | $ | — |  |  | $ | — |

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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=108410482&loc=d3e1928-114920 + Details
Name: | us-gaap_ScheduleOfNetBenefitCostsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration