Annual report pursuant to Section 13 and 15(d)

PENSIONS AND OTHER POSTRETIREMENT BENEFITS (Assumed Health Care Cost Trend Rates) (Details)

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Dec. 31, 2018
Dec. 31, 2017
Postemployment Benefits [Abstract]    
Health care cost trend rate assumed for next year 6.75% 7.00%
Ultimate health care cost trend rate 5.00% 5.00%