Employee Benefits (Tables)

6 Months Ended

Jun. 30, 2018

Retirement Benefits [Abstract]

Components of Net Periodic Benefit Cost

The components of net periodic benefit costs for 2018 and 2017 are as follows:

	Three Months Ended June 30						Six Months Ended June 30
	2018			2017			2018			2017
	(Millions of dollars)
Pension Benefits
United States
Service cost	$	120		$	122		$	240		$	244
Interest cost	93			92			185			183
Expected return on plan assets	(159		)	(149		)	(318		)	(298		)
Amortization of prior service credits	—			(1		)	1			(2		)
Amortization of actuarial losses	76			85			152			170
Settlement losses	66			78			132			156
Total United States	196			227			392			453
International
Service cost	33			39			73			76
Interest cost	60			57			106			110
Expected return on plan assets	(65		)	(59		)	(131		)	(117		)
Amortization of prior service costs	4			3			6			6
Amortization of actuarial losses	6			13			17			22
Settlement losses	—			—			—			—
Total International	38			53			71			97
Net Periodic Pension Benefit Costs	$	234		$	280		$	463		$	550
Other Benefits*
Service cost	$	8		$	8		$	21		$	16
Interest cost	27			25			48			48
Amortization of prior service costs	(7		)	(7		)	(14		)	(14		)
Amortization of actuarial losses	3			(2		)	7			(3		)
Net Periodic Other Benefit Costs	$	31		$	24		$	62		$	47

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* Includes costs for U.S. and international OPEB plans. Obligations for plans outside the United States are not significant relative to the company’s total OPEB obligation.