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EMPLOYEE BENEFIT PLANS Asset allocations (Details)	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan Disclosure
Equity securities	100.00%	100.00%
Fixed Income Investments [Member]
Defined Benefit Plan Disclosure
Equity securities	43.40%	37.50%
Other Investments [Member]
Defined Benefit Plan Disclosure
Equity securities	18.70%	6.90%
Canada | Equity Securities [Member]
Defined Benefit Plan Disclosure
Equity securities	11.70%	23.00%
United States | Equity Securities [Member]
Defined Benefit Plan Disclosure
Equity securities	4.60%	14.00%
Non-US [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure
Equity securities	21.60%	18.60%

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Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e2446-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(1)
-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920

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