EMPLOYEE BENEFIT PLANS (Nonunion Plan Assets) (Details) - Nonunion Defined Benefit Pension Plan			3 Months Ended	6 Months Ended	12 Months Ended
Jul. 01, 2017	Jan. 01, 2017	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Nonunion Defined Benefit Pension, Supplemental Benefit, and Postretirement Health Benefit Plans
Period over which the possibility of experiencing a substantial loss is limited by adequate diversification under the long-term asset allocation policy						1 year
Expected return on plan assets (as a percent)	2.50%	6.50%	0.00%	0.00%	2.50%	1.40%	1.40%	6.50%

Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)(3)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

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