XML 43 R30.htm IDEA: XBRL DOCUMENT
v3.19.1

Retirement Plans (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2019
Retirement Benefits [Abstract] |
Components of Net Periodic Benefit Cost | The components of the net periodic benefit cost for our plans were as follows:
|  | 3 Months Ended March 31,
|  | Defined Benefit Pension Plans |  | Retiree Health Care Plan
|  | 2019 |  | 2018 |  | 2019 |  | 2018
Service cost |  | $ | 2.5 |  |  | $ | 2.8 |  |  | $ | — |  |  | $ | — |
Interest cost |  | 3.1 |  |  | 3.0 |  |  | 0.1 |  |  | 0.1 |
Expected return on assets |  | (2.3 | ) |  | (2.8 | ) |  | — |  |  | — |
Other |  | 0.5 |  |  | 0.4 |  |  | (0.2 | ) |  | (0.2 | )
Total benefit cost (credit) |  | $ | 3.8 |  |  | $ | 3.4 |  |  | $ | (0.1 | ) |  | $ | (0.1 | )

X
- References No definition available. + Details
Name: | us-gaap_CompensationAndRetirementDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_ScheduleOfNetBenefitCostsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration