Retirement Benefits (Tables)

9 Months Ended

Sep. 30, 2020

Schedule Of Defined Benefit Plans Disclosures [Table Text Block]

For the three month periods ended September 30, 2020 and 2019, the components of pension and other postretirement benefit expense for the Company’s defined benefit plans included the following (in millions):


	Pension Benefits				Other Postretirement Benefits
	Three months ended September 30,				Three months ended September 30,
	2020		2019		2020		2019
Service cost - benefits earned during the year	$	3.2	$	3.2	$	0.6	$	0.5
Interest cost on benefits earned in prior years	21.6		26.4		2.6		3.7
Expected return on plan assets	(33.6)		(32.8)		—		—
Amortization of prior service cost (credit)	0.1		—		(0.9)		(0.7)
Amortization of net actuarial loss	18.6		18.5		2.7		3.4
Total retirement benefit expense	$	9.9	$	15.3	$	5.0	$	6.9

For the nine month periods ended September 30, 2020 and 2019, the components of pension and other postretirement benefit expense for the Company’s defined benefit plans included the following (in millions):


	Pension Benefits				Other Postretirement Benefits
	Nine months ended September 30,				Nine months ended September 30,
	2020		2019		2020		2019
Service cost - benefits earned during the year	$	9.5	$	9.5	$	1.7	$	1.4
Interest cost on benefits earned in prior years	64.7		79.1		8.0		11.1
Expected return on plan assets	(100.8)		(98.5)		—		—
Amortization of prior service cost (credit)	0.5		0.2		(2.8)		(2.1)
Amortization of net actuarial loss	55.8		55.3		8.1		10.1
Total retirement benefit expense	$	29.7	$	45.6	$	15.0	$	20.5