XML 47 R36.htm IDEA: XBRL DOCUMENT
v3.21.2

Retirement Benefits (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2021
Defined Benefit Pension Plan [Member] |
Net Periodic Benefit Cost For U.S. Employees |
Pension Benefits | Three Months Ended |  | Six Months Ended
| June 30, |  | June 30,
(Dollars in thousands) | 2021 |  | 2020 |  | 2021 |  | 2020
Service cost | $ | 2,738 |  | $ | 2,041 |  | $ | 5,476 |  | $ | 6,052
Interest cost |  | 1,999 |  |  | 2,563 |  |  | 3,998 |  |  | 5,046
Expected return on plan assets |  | (5,580) |  |  | (5,197) |  |  | (11,161) |  |  | (10,394)
Amortization of net (income) loss |  | 2,731 |  |  | 2,462 |  |  | 5,461 |  |  | 3,675
Net periodic benefit cost | $ | 1,888 |  | $ | 1,869 |  | $ | 3,774 |  | $ | 4,379
Post-Retirement Plan [Member] |
Net Periodic Benefit Cost For U.S. Employees |
Other Benefits | Three Months Ended |  | Six Months Ended
| June 30, |  | June 30,
(Dollars in thousands) | 2021 |  | 2020 |  | 2021 |  | 2020
Service cost | $ | 281 |  | $ | 311 |  | $ | 564 |  | $ | 452
Interest cost |  | 181 |  |  | 215 |  |  | 362 |  |  | 429
Amortization of prior service cost |  | (144) |  |  | (176) |  |  | (289) |  |  | (224)
Net periodic benefit cost | $ | 318 |  | $ | 350 |  | $ | 637 |  | $ | 657

X
- Definition Tabular disclosure of the costs related to the various types of retirement plans including defined benefit pension plan cost, defined contribution plan cost, other postretirement benefit plan cost, and net periodic benefit cost. + 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 -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
Name: | us-gaap_ScheduleOfCostsOfRetirementPlansTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=us-gaap_PensionPlansDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |