RETIREMENT BENEFITS PLANS

6 Months Ended

Jun. 30, 2018

The components of retirement benefits expense follow:



	United States pension benefit expense						Non-United States pension benefit expense						Other postretirement benefits expense
	Three months ended June 30
	2018			2017			2018			2017			2018			2017
Service cost	$	25		$	24		$	16		$	18		$	—		$	—
Interest cost	31			31			13			14			4			4
Expected return on plan assets	(64		)	(61		)	(26		)	(23		)	(1		)	(1		)
Amortization	23			21			10			12			(3		)	(3		)
	15			15			13			21			—			—
Settlements	11			17			—			—			—			—
Total expense	$	26		$	32		$	13		$	21		$	—		$	—


	United States pension benefit expense						Non-United States pension benefit expense						Other postretirement benefits expense
	Six months ended June 30
	2018			2017			2018			2017			2018			2017
Service cost	$	50		$	48		$	32		$	35		$	1		$	1
Interest cost	61			62			27			27			7			7
Expected return on plan assets	(127		)	(122		)	(53		)	(46		)	(2		)	(2		)
Amortization	47			41			20			25			(6		)	(6		)
	31			29			26			41			—			—
Settlements	25			34			—			—			—			—
Total expense	$	56		$	63		$	26		$	41		$	—		$	—

The components of retirement benefits expense other than service costs are included in Other expense - net.