XML 42 R31.htm IDEA: XBRL DOCUMENT
v3.19.2

Pension and Other Postretirement Employee Benefit Plans - (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2019
Retirement Benefits [Abstract] |
Components of Net Periodic Cost of Pension and Other Postretirement Employee Benefit Plans | The following table details the components of net periodic cost of our company-sponsored pension and other postretirement employee benefit, or OPEB, plans for the periods presented:
| Three Months Ended June 30,
(In thousands) | 2019 |  | 2018 |  | 2019 |  | 2018
| Pension Benefit Plans |  | Other Postretirement Employee Benefit Plans
Service cost | $ | 669 |  |  | $ | 461 |  |  | $ | 20 |  |  | $ | 20 |
Interest cost | 3,102 |  |  | 3,010 |  |  | 752 |  |  | 611 |
Expected return on plan assets | (4,132 | ) |  | (4,247 | ) |  | — |  |  | — |
Amortization of prior service cost (credit) | — |  |  | — |  |  | — |  |  | (419 | )
Amortization of actuarial loss (gain) | 1,776 |  |  | 2,458 |  |  | 33 |  |  | (226 | )
Net periodic cost (benefit) | $ | 1,415 |  |  | $ | 1,682 |  |  | $ | 805 |  |  | $ | (14 | )
| Six Months Ended June 30,
(In thousands) | 2019 |  | 2018 |  | 2019 |  | 2018
| Pension Benefit Plans |  | Other Postretirement Employee Benefit Plans
Service cost | $ | 1,219 |  |  | $ | 895 |  |  | $ | 45 |  |  | $ | 68 |
Interest cost | 6,223 |  |  | 6,010 |  |  | 1,399 |  |  | 1,218 |
Expected return on plan assets | (8,267 | ) |  | (8,501 | ) |  | — |  |  | — |
Amortization of prior service cost (credit) | — |  |  | — |  |  | — |  |  | (838 | )
Amortization of actuarial loss (gain) | 3,685 |  |  | 5,028 |  |  | (195 | ) |  | (451 | )
Net periodic cost (benefit) | $ | 2,860 |  |  | $ | 3,432 |  |  | $ | 1,249 |  |  | $ | (3 | )

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://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=118255775&loc=d3e1928-114920 + Details
Name: | us-gaap_ScheduleOfNetBenefitCostsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration