Pension and Other Post-Retirement Benefits

3 Months Ended

Mar. 31, 2017

Compensation and Retirement Disclosure [Abstract]

Pension and Other Post-Retirement Benefits

The following table shows components of our pension and other post-retirement benefits expense for the three months ended March 31, 2017 and 2016 (in millions):

	2017 Pension Benefits			2016 Pension Benefits			2017 Retiree Health and Life			2016 Retiree Health and Life
Service cost	$	1.6		$	1.6		$	—		$	—
Interest cost	3.8			3.9			0.2			0.3
Expected return on plan assets	(6.0		)	(6.5		)	—			—
Amortization of (1):
Unrecognized prior service credit	—			(0.2		)	—			(0.1		)
Unrecognized net actuarial loss (gain)	2.3			2.6			(0.1		)	—
Net expense	$	1.7		$	1.4		$	0.1		$	0.2

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(1) Amounts reclassified from accumulated other comprehensive loss.