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BENEFIT PLANS: (Tables)

3 Months Ended

Mar. 31, 2022

Post retirement defined benefit plans and defined contribution plan

Components of net periodic benefit costs

Schedule of the components of net periodic benefit costs

The components of net periodic benefit costs for the first three months of 2022 and 2021 are as follows (in millions):

​

​	​	​	​	​	​	​
(in millions)		2022			2021
Service cost	​	$	0.4	​	$	0.4
Interest cost	​		0.5	​		0.3
Expected return on plan assets	​		(1.0)	​		(0.8)
Amortization of net loss/(gain)	​		0.1	​		0.1
Net periodic benefit cost	​	$	—	​	$	—

Post-retirement Health care plans

Components of net periodic benefit costs

Schedule of the components of net periodic benefit costs

​

The components of net periodic benefit cost for the first three months of 2022 and 2021 are as follows (in millions):

​

​	​	​	​	​	​	​
(in millions)		2022			2021
Interest cost	​	$	0.4	​	$	0.4
Amortization of net loss (gain)	​		(*)	​		(*)
Amortization of prior service cost/ (credit)	​		(*)	​		0.1
Net periodic benefit cost	​	$	0.4	​	$	0.5

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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=123447040&loc=d3e1928-114920

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