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Annual report pursuant to Section 13 and 15(d)

PENSIONS AND OTHER POSTRETIREMENT BENEFITS - Weighted-Average Assumptions Used to Determine Benefit Obligations (Details)

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PENSIONS AND OTHER POSTRETIREMENT BENEFITS - Weighted-Average Assumptions Used to Determine Benefit Obligations (Details)
Dec. 31, 2020
Dec. 31, 2019
Pension Plan [Member] Ìý Ìý
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] Ìý Ìý
Discount rate 2.34% 3.27%
Interest crediting rate 5.25% 6.00%
Rate of compensation increase 2.56% 2.53%
Other Postretirement Benefits Plan [Member] Ìý Ìý
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] Ìý Ìý
Discount rate 2.71% 3.28%
Rate of compensation increase 3.00% 3.00%