Retirement Plans (Tables)

6 Months Ended

Jun. 30, 2017

Pension Plans, Defined Benefit

Schedule of Components of Net Periodic Benefit Cost

The components of total Net Periodic Benefit Cost associated with the Company’s defined benefit retirement plans are as follows:

	Three months ended						Six months ended
	June 30, 2017			June 30, 2016			June 30, 2017			June 30, 2016
Service cost	$	6.1		$	5.4		$	12.1		$	10.7
Interest cost		5.4			5.4			10.7			10.7
Expected return on plan assets		(5.4	)		(5.2	)		(10.7	)		(10.3	)
Amortization prior service credit		0.1			(0.1	)		0.2			(0.3	)
Amortization of actuarial loss		1.9			1.5			3.9			3.0
Net Periodic Benefit Cost	$	8.1		$	7.0		$	16.2		$	13.8