Pension and Post-Retirement Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2017

Compensation and Retirement Disclosure [Abstract]

Components of net periodic benefit cost

The components of net periodic benefit cost were as follows (in millions):

	For the Three Months Ended June 30,
	2017			2016			2017			2016
	Pension Benefits						Other Benefits
Service cost	$	1.2		$	1.1		$	—		$	—
Interest cost	3.1			3.9			—			—
Expected return on plan assets	(5.4		)	(5.7		)	—			—
Amortization of prior service cost	0.1			0.1			(0.6		)	(0.8		)
Recognized actuarial loss	2.0			1.7			0.4			0.4
Settlements and curtailments	0.3			—			—			—
Net periodic benefit cost (1)	$	1.3		$	1.1		$	(0.2	)	$	(0.4	)

	For the Six Months Ended June 30,
	2017			2016			2017			2016
	Pension Benefits						Other Benefits
Service cost	$	2.5		$	2.2		$	—		$	—
Interest cost	6.4			7.7			—			—
Expected return on plan assets	(10.7		)	(10.8		)	—			—
Amortization of prior service cost	0.1			0.1			(1.2		)	(1.5		)
Recognized actuarial loss	4.0			3.8			0.7			0.7
Settlements and curtailments	0.6			—			—			—
Net periodic benefit cost (1)	$	2.9		$	3.0		$	(0.5	)	$	(0.8	)

⁽¹⁾ All net periodic benefit cost for the three and six months ended June 30, 2017 and 2016 related to continuing operations.