Pension and Other Post-Retirement Benefits (Tables)

3 Months Ended

Mar. 31, 2019

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Components of pension and other post retirement benefit costs

The following table shows the components of our pension and other post-retirement benefits expense for the three months ended March 31, 2019 and 2018 (in millions):

	2019 Pension Benefits			2018 Pension Benefits			2019 Retiree Health and Life		2018 Retiree Health and Life
Service cost	$	1.7		$	1.9		$	—	$	0.1
Interest cost	3.8			3.7			0.2		0.2
Expected return on plan assets	(5.5		)	(5.6		)	—		—
Amortization of (1):
Unrecognized prior service credit	—			—			—		—
Unrecognized net actuarial loss	1.9			2.5			—		—
Net periodic cost	$	1.9		$	2.5		$	0.2	$	0.3

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(1) Amounts reclassified from accumulated other comprehensive loss.