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EMPLOYEE BENEFIT PLANS Asset allocations (Details)	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure
Equity securities	100.00%	100.00%
Fixed Income Investments [Member]
Defined Benefit Plan Disclosure
Equity securities	44.70%	41.40%
Other Investments [Member]
Defined Benefit Plan Disclosure
Equity securities	15.40%	21.70%
Canada | Equity Securities [Member]
Defined Benefit Plan Disclosure
Equity securities	12.40%	11.50%
United States | Equity Securities [Member]
Defined Benefit Plan Disclosure
Equity securities	5.00%	4.60%
Non-US [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure
Equity securities	22.50%	20.80%

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- Definition

Percentage of actual investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
-URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920

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