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 nine months ended September 30, 2018 and 2017 is as follows:



	Three months ended September 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)/loss	—			(0.3		)	—			—			0.4			—
Net periodic benefit cost	$	(0.4	)	$	8.5		$	(0.1	)	$	3.6		$	9.2		$	0.7



	Nine months ended September 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	$	—		$	28.5		$	—		$	11.1		$	28.2		$	1.2
Interest cost	11.7			3.9			0.3			11.7			3.6			0.9
Expected return on plan assets	(12.9		)	(6.0		)	—			(12.0		)	(5.4		)	—
Amortization of net prior service cost	—			—			(0.6		)	—			—			—
Amortization of actuarial (gain)/loss	—			(0.9		)	—			—			1.3			—
Net periodic benefit cost	$	(1.2	)	$	25.5		$	(0.3	)	$	10.8		$	27.7		$	2.1

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