Pension and Other Benefits (Tables)

6 Months Ended

Jun. 30, 2019

Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]

Schedule of net pension and other benefit costs

The following table sets forth the components of net pension and other benefit costs for the three and six months ended June 30, 2019 and 2018 (in millions):

	Pension Benefits						Other Benefits
	2019			2018			2019			2018
Three Months Ended June 30,
Service cost	$	0.6		$	1.1		$	—		$	0.1
Interest cost	8.6			8.6			0.3			0.3
Expected return on plan assets	(7.7		)	(8.5		)	—			—
Amortization of prior service cost	—			—			(0.2		)	(0.3		)
Amortization of actuarial losses	2.7			2.7			—			0.1
NET PERIODIC BENEFIT COST	$	4.2		$	3.9		$	0.1		$	0.2
Six Months Ended June 30,
Service cost	$	1.1		$	2.2		$	—		$	0.1
Interest cost	17.3			17.2			0.6			0.5
Expected return on plan assets	(15.3		)	(17.0		)	—			—
Amortization of prior service cost	—			—			(0.4		)	(0.5		)
Amortization of actuarial losses	4.9			5.5			—			0.1
NET PERIODIC BENEFIT COST	$	8.0		$	7.9		$	0.2		$	0.2