PENSIONS

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



	U.S. Benefit Plan												Non-U.S. Benefit Plan
	Three Months Ended June 30,						Six Months Ended June 30,						Three Months Ended June 30,						Six Months Ended June 30,
(in millions)	2018			2017			2018			2017			2018			2017			2018			2017
Service cost	$	—		$	—		$	—		$	—		$	—		$	0.1		$	0.1		$	0.1
Interest cost	1.6			1.9			3.2			3.8			0.4			0.4			0.7			0.7
Amortization of actuarial loss	0.7			0.6			1.5			1.2			0.1			0.1			0.3			0.3
Expected return on plan assets	(2.2		)	(2.4		)	(4.4		)	(4.8		)	(0.6		)	(0.5		)	(1.2		)	(1.0		)
Net postretirement pension expense (benefit)	$	0.1		$	0.1		$	0.3		$	0.2		$	(0.1	)	$	0.1		$	(0.1	)	$	0.1

In the six months ended June 30, 2018 and 2017, the Company contributed $2.7 million and $2.7 million to its U.S. defined benefit plan, respectively, and $0.7 million and $0.4 million to its non-U.S. defined benefit plan, respectively.

The Company expects to contribute up to $6.9 million to the U.S. benefit plan and up to $1.4 million to the non-U.S. benefit plan during 2018.