Retirement Benefits (Tables)

6 Months Ended

Jun. 30, 2020

Schedule Of Defined Benefit Plans Disclosures [Table Text Block]

For the three month periods ended June 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 June 30,						Three months ended June 30,
	2020		2019		2020		2019
Service cost - benefits earned during the year	$	3.1	$	3.1	$	0.6	$	0.4
Interest cost on benefits earned in prior years	21.6		26.4		2.7		3.7
Expected return on plan assets	(33.6)		(32.9)		—		—
Amortization of prior service cost (credit)	0.2		0.1		(1.0)		(0.7)
Amortization of net actuarial loss	18.6		18.4		2.7		3.4
Total retirement benefit expense	$	9.9	$	15.1	$	5.0	$	6.8

For the six month periods ended June 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
	Six months ended June 30,						Six months ended June 30,
	2020		2019		2020		2019
Service cost - benefits earned during the year	$	6.3	$	6.3	$	1.1	$	0.9
Interest cost on benefits earned in prior years	43.1		52.7		5.4		7.4
Expected return on plan assets	(67.2)		(65.7)		—		—
Amortization of prior service cost (credit)	0.4		0.2		(1.9)		(1.4)
Amortization of net actuarial loss	37.2		36.8		5.4		6.7
Total retirement benefit expense	$	19.8	$	30.3	$	10.0	$	13.6