Restructuring Costs (Tables)

3 Months Ended

Mar. 31, 2017

Restructuring Charges [Abstract]

Restructuring and related costs

Restructuring costs for the three months ended March 31, 2017 and 2016 were as follows:

(Millions of dollars)	Three Months Ended March 31
	2017		2016
Employee separations 1	$	464	$	31
Contract terminations 1	9		11
Long-lived asset impairments 1	212		82
Defined benefit plan curtailments and termination benefits 1	29		—
Other 2	38		37
Total restructuring costs	$	752	$	161
1 Recognized in Other operating (income) expenses.
2 Represents costs related to our restructuring programs, primarily for accelerated depreciation, inventory write-downs, equipment relocation and
project management, which were recognized primarily in Cost of goods sold.

Summary of separation activity

The following table summarizes the 2016 and 2017 employee separation activity:

(Millions of dollars)
Liability balance at December 31, 2015	$	483
Increase in liability (separation charges)	297
Reduction in liability (payments)	(633		)
Liability balance at December 31, 2016	$	147
Increase in liability (separation charges)	464
Reduction in liability (payments)	(62		)
Liability balance at March 31, 2017	$	549