Annual report pursuant to Section 13 and 15(d)

PENSIONS AND OTHER POSTRETIREMENT BENEFITS - Contributions (Details)

v3.22.0.1
PENSIONS AND OTHER POSTRETIREMENT BENEFITS - Contributions (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Pension Plan    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Employer contributions $ 155 $ 50
Expected employer contributions, next fiscal year 4  
Defined Benefit Plan, Plan Assets, Contributions by Employer 163  
Other Postretirement Benefits Plan    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Employer contributions 139 30
Expected employer contributions, next fiscal year 138  
Defined Benefit Plan, Plan Assets, Contributions by Employer 180 25
Other Postretirement Benefits Plan | VEBA    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Expected employer contributions, next fiscal year 28  
Defined Benefit Plan, Plan Assets, Contributions by Employer 67 0
Other Postretirement Benefits Plan | Direct Payments    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Expected employer contributions, next fiscal year 110  
Defined Benefit Plan, Plan Assets, Contributions by Employer $ 113 $ 25