Retirement benefits (Tables)

9 Months Ended

Sep. 30, 2020

The components of net periodic pension cost for our pension plans were as follows:


	U.S. Plans			Non-U.S. Plans		Total
(In millions)	2020		2019	2020	2019	2020	2019

Three months ended September 30,

Service cost	$	—	—	1.8	2.5	1.8	2.5
Interest cost on projected benefit obligation	6.7		8.5	3.1	2.6	9.8	11.1
Return on assets – expected	(11.6)		(12.6)	(3.1)	(2.5)	(14.7)	(15.1)
Amortization of losses	7.3		4.9	1.4	1.1	8.7	6.0
Amortization of prior service credit	—		—	—	(0.1)	—	(0.1)
Settlement loss	—		—	0.6	0.6	0.6	0.6
Net periodic pension cost	$	2.4	0.8	3.8	4.2	6.2	5.0






Nine months ended September 30,

Service cost	$	—	—	7.7	7.4	7.7	7.4
Interest cost on projected benefit obligation	20.0		25.6	8.4	7.8	28.4	33.4
Return on assets – expected	(34.7)		(38.0)	(8.8)	(7.7)	(43.5)	(45.7)
Amortization of losses	21.4		14.7	3.8	3.1	25.2	17.8

Settlement loss	—		—	1.1	1.5	1.1	1.5
Net periodic pension cost	$	6.7	2.3	12.2	12.1	18.9	14.4

The components of net periodic postretirement cost related to retirement benefits other than pensions were as follows:


	UMWA Plans			Black Lung and Other Plans		Total
(In millions)	2020		2019	2020	2019	2020	2019

Three months ended September 30,


Interest cost on accumulated postretirement benefit obligations	$	3.2	4.1	0.9	0.9	4.1	5.0
Return on assets – expected	(3.3)		(3.4)	—	—	(3.3)	(3.4)
Amortization of losses	4.2		3.9	2.1	1.2	6.3	5.1
Amortization of prior service (credit) cost	(1.2)		(1.2)	—	(0.1)	(1.2)	(1.3)
Net periodic postretirement cost	$	2.9	3.4	3.0	2.0	5.9	5.4

Nine months ended September 30,

Service cost	$	—	—	0.1	0.1	0.1	0.1
Interest cost on accumulated postretirement benefit obligations	9.6		13.2	2.8	2.7	12.4	15.9
Return on assets – expected	(9.8)		(10.0)	—	—	(9.8)	(10.0)
Amortization of losses	12.3		12.8	6.2	3.5	18.5	16.3
Amortization of prior service credit	(3.5)		(3.5)	(0.2)	(0.3)	(3.7)	(3.8)
Net periodic postretirement cost	$	8.6	12.5	8.9	6.0	17.5	18.5