v3.8.0.1

EMPLOYEE BENEFIT PLANS (Tables)

3 Months Ended

Mar. 31, 2018

Retirement Benefits [Abstract]

Schedule of Net Benefit Costs [Table Text Block]

The components of net periodic benefit cost (income) related to our Pension Plans and other postretirement benefit plans were as follows:

	Pension Plans								Other Postretirement Benefit Plans
	2018				2017				2018				2017
	(Thousands of Dollars)
For the three months ended March 31:
Service cost	$	2,406			$	2,239			$	126			$	113
Interest cost	1,206				1,127				108				108
Expected return on assets	(1,855		)		(1,603		)		—				—
Amortization of prior service credit	(514		)		(515		)		(287		)		(286		)
Amortization of net loss	544				371				54				48
Net periodic benefit cost (income)	$	1,787			$	1,619			$	1			$	(17	)

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- References

No definition available.

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- Definition

Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

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