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Annual report pursuant to Section 13 and 15(d)

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

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PENSIONS AND OTHER POSTRETIREMENT BENEFITS - Weighted-Average Assumptions Used to Determine Net Benefit Cost (Details)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Pension Plan Ìý Ìý Ìý
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] Ìý Ìý Ìý
Obligation discount rate 2.32% 3.02% 4.27%
Service cost discount rate 2.78% 3.34% 4.35%
Interest cost discount rate 1.64% 2.53% 3.92%
Interest crediting rate 5.35% 5.50% 6.00%
Expected return on plan assets 6.84% 7.69% 8.25%
Compensation rate increase 2.54% 2.56% 2.53%
Other Postretirement Benefits Plan Ìý Ìý Ìý
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] Ìý Ìý Ìý
Obligation discount rate 2.46% 3.28% 4.29%
Service cost discount rate 3.28% 3.35% 4.49%
Interest cost discount rate 2.04% 2.51% 3.94%
Expected return on plan assets 5.20% 6.82% 7.00%
Compensation rate increase 3.00% 3.00% 3.00%