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BENEFIT PLANS: (Tables)

6 Months Ended

Jun. 30, 2019

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 six months ended June 30, 2019 and 2018 are as follows (in millions):

​

​	​	​	​	​	​	​
(in millions)		2019			2018
Service cost	​	$	0.5	​	$	0.5
Interest cost	​		0.9	​		0.8
Expected return on plan assets	​		(1.7)	​		(1.8)
Amortization of prior service cost / (credit)	​		0.1	​		0.1
Amortization of net loss/(gain)	​		0.1	​		0.1
Net periodic benefit cost	​	$	(0.1)	​	$	(0.3)

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 six months ended June 30, 2019 and 2018 are as follows (in millions):

​

​	​	​	​	​	​	​
(in millions)		2019			2018
Interest cost	​	$	0.5	​	$	0.5
Amortization of net loss (gain)	​		(0.1)	​		(0.1)
Amortization of prior service cost/ (credit)	​		(*)	​		(*)
Net periodic benefit cost	​	$	0.4	​	$	0.4

(*) amount is lower than $0.1 million

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- Definition

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+ References

No definition available.

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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=118255775&loc=d3e1928-114920

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