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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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PENSIONS AND OTHER POSTRETIREMENT BENEFITS - Assumed Health Care Cost Trend Rates (Details)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Postemployment Benefits [Abstract] Ìý Ìý
Health care cost trend rate assumed for next year 6.05% 6.50%
Ultimate health care cost trend rate 4.59% 5.00%
Year the ultimate rate is reached 2031 2026