Retirement and Other Benefit Programs

The Company sponsors various pension and other post-employment benefit (OPEB) plans in the U.S. and other countries. Net periodic benefit cost for the three and six months ended June 30, 2018 and 2017 is as follows:



	Three months ended June 30,
	2018									2017
(In millions)	U.S. pensions			International pensions			OPEB (U.S.)			U.S. pensions			International pensions			OPEB (U.S.)
Net periodic benefit cost
Service cost	$	—		$	9.5		$	—		$	3.7		$	9.4		$	0.4
Interest cost	3.9			1.3			0.1			3.9			1.2			0.3
Expected return on plan assets	(4.3		)	(2.0		)	—			(4.0		)	(1.8		)	—
Amortization of net prior service cost	—			—			(0.2		)	—			—			—
Amortization of actuarial gain	—			(0.3		)	—			—			—			—
Net periodic benefit cost	$	(0.4	)	$	8.5		$	(0.1	)	$	3.6		$	8.8		$	0.7



	Six months ended June 30,
	2018									2017
(In millions)	U.S. pensions			International pensions			OPEB (U.S.)			U.S. pensions			International pensions			OPEB (U.S.)
Net periodic benefit cost
Service cost	$	—		$	19.0		$	—		$	7.4		$	18.8		$	0.8
Interest cost	7.8			2.6			0.2			7.8			2.4			0.6
Expected return on plan assets	(8.6		)	(4.0		)	—			(8.0		)	(3.6		)	—
Amortization of net prior service cost	—			—			(0.4		)	—			—			—
Amortization of actuarial (gain)/loss	—			(0.6		)	—			—			0.9			—
Net periodic benefit cost	$	(0.8	)	$	17.0		$	(0.2	)	$	7.2		$	18.5		$	1.4

The components of net periodic benefit cost other than the service cost component are included in the line item Other income, net in these Unaudited Consolidated Statement of Operations.