XML 53 R29.htm IDEA: XBRL DOCUMENT
v3.22.2.2

Pension Plans and Other Postretirement Benefit Plans (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2022
Retirement Benefits, Description [Abstract] |
Components of Net Periodic Benefit Cost | The Company uses a December 31 measurement date for its defined benefit pension and other postretirement benefit plans. The following table sets forth the components of net periodic benefit costs for the three and nine months ended September 30 (dollars in thousands):
|  | Pension Benefits |  |  | Other Postretirement Benefits |
|  | 2022 |  |  | 2021 |  |  | 2022 |  |  | 2021 |
Three months ended September 30: |  |  |  |  |  |  |  |  |  |  |  |
Service cost |  | $ | 5,914 |  |  | $ | 6,412 |  |  | $ | 1,095 |  |  | $ | 1,062 |
Interest cost |  |  | 6,578 |  |  |  | 6,528 |  |  |  | 1,343 |  |  |  | 1,305 |
Expected return on plan assets |  |  | (10,950 | ) |  |  | (9,835 | ) |  |  | (700 | ) |  |  | (509 | )
Amortization of prior service cost |  |  | 75 |  |  |  | 75 |  |  |  | (275 | ) |  |  | (275 | )
Net loss recognition |  |  | 997 |  |  |  | 1,592 |  |  |  | 826 |  |  |  | 777 |
Net periodic benefit cost |  | $ | 2,614 |  |  | $ | 4,772 |  |  | $ | 2,289 |  |  | $ | 2,360 |
Nine months ended September 30: |  |  |  |  |  |  |  |  |  |  |  |
Service cost |  | $ | 17,914 |  |  | $ | 18,912 |  |  | $ | 3,255 |  |  | $ | 2,967 |
Interest cost |  |  | 20,005 |  |  |  | 19,638 |  |  |  | 4,167 |  |  |  | 3,990 |
Expected return on plan assets |  |  | (32,851 | ) |  |  | (29,314 | ) |  |  | (2,100 | ) |  |  | (1,967 | )
Amortization of prior service cost |  |  | 225 |  |  |  | 225 |  |  |  | (825 | ) |  |  | (825 | )
Net loss recognition |  |  | 3,084 |  |  |  | 5,103 |  |  |  | 2,586 |  |  |  | 3,196 |
Net periodic benefit cost |  | $ | 8,377 |  |  | $ | 14,564 |  |  | $ | 7,083 |  |  | $ | 7,361 |

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

X
- Definition Tabular disclosure of the amounts related to pension plans and/or other employee benefit plans in accumulated other comprehensive income or loss that have not yet been recognized as components of net periodic benefit cost, such as the net gain (loss), net prior service cost or credit, and net transition asset or obligation. + 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 (j) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
Name: | us-gaap_ScheduleOfNetPeriodicBenefitCostNotYetRecognizedTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration