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Annual report pursuant to Section 13 and 15(d)

PENSIONS AND OTHER POSTRETIREMENT BENEFITS - Contributions (Details)

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PENSIONS AND OTHER POSTRETIREMENT BENEFITS - Contributions (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Pension Plan Ìý Ìý
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] Ìý Ìý
Employer contributions $ 155 $ 50
Expected employer contributions, next fiscal year 4 Ìý
Defined Benefit Plan, Plan Assets, Contributions by Employer 163 Ìý
Other Postretirement Benefits Plan Ìý Ìý
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] Ìý Ìý
Employer contributions 139 30
Expected employer contributions, next fiscal year 138 Ìý
Defined Benefit Plan, Plan Assets, Contributions by Employer 180 25
Other Postretirement Benefits Plan | VEBA Ìý Ìý
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] Ìý Ìý
Expected employer contributions, next fiscal year 28 Ìý
Defined Benefit Plan, Plan Assets, Contributions by Employer 67 0
Other Postretirement Benefits Plan | Direct Payments Ìý Ìý
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] Ìý Ìý
Expected employer contributions, next fiscal year 110 Ìý
Defined Benefit Plan, Plan Assets, Contributions by Employer $ 113 $ 25