Pensions (Tables)

9 Months Ended

Sep. 30, 2017

Compensation and Retirement Disclosure [Abstract]

Summary of Components of Net Postretirement Pensions Expense

The following table summarizes the components of net postretirement pension expense:

	U.S. Benefit Plan												Non-U.S. Benefit Plan
	Three Months Ended   September 30,						Nine Months Ended   September 30,						Three Months Ended   September 30,						Nine Months Ended   September 30,
(in millions)	2017			2016			2017			2016			2017			2016			2017			2016
Service cost	$	—		$	—		$	—		$	—		$	—		$	—		$	0.1		$	0.1
Interest cost	1.8			1.9			5.6			5.8			0.3			0.4			1.0			1.4
Amortization of actuarial loss	0.7			1.4			1.9			4.2			0.2			0.2			0.5			0.5
Expected return on plan assets	(2.4		)	(2.6		)	(7.2		)	(7.8		)	(0.5		)	(0.5		)	(1.5		)	(1.8		)
Net postretirement pension expense	$	0.1		$	0.7		$	0.3		$	2.2		$	—		$	0.1		$	0.1		$	0.2