BENEFIT PLANS: (Tables)

3 Months Ended

Mar. 31, 2020

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 three months ended March 31, 2020 and 2019 are as follows (in millions):

(in millions)	2020		2019
Service cost	$	0.4	$	0.3
Interest cost		0.5		0.4
Expected return on plan assets		(0.7)		(0.8)
Amortization of prior service cost / (credit)		(*)		(*)
Amortization of net loss/(gain)		(*)		(*)
Net periodic benefit cost	$	0.2	$	(0.1)

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 three months ended March 31, 2020 and 2019 are as follows (in millions):

(in millions)	2020		2019
Interest cost	$	0.3	$	0.2
Amortization of net loss (gain)		(*)		(*)
Amortization of prior service cost/ (credit)		(*)		(*)
Net periodic benefit cost	$	0.3	$	0.2

(*) amount is lower than $0.1 million