Annual report pursuant to Section 13 and 15(d)

PENSION AND POST RETIREMENT BENEFITS (Components of Accumulated Other Comprehensive Loss (Income) (Details)

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PENSION AND POST RETIREMENT BENEFITS (Components of Accumulated Other Comprehensive Loss (Income) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Pension Plan    
Defined Benefit Plan Disclosure [Line Items]    
Actuarial loss (gain) on benefit obligation $ (451) $ (219)
Actual returns on assets under (over) expected (309) (332)
Amortization of net actuarial gain (loss) (32) (27)
Amortization of prior service credits (costs) (1) (1)
Settlements 22 6
Other 0 (27)
Other Postretirement Benefits Plan    
Defined Benefit Plan Disclosure [Line Items]    
Actuarial loss (gain) on benefit obligation (438) (15)
Actual returns on assets under (over) expected 11 (26)
Amortization of net actuarial gain (loss) 2 (3)
Amortization of prior service credits (costs) (3) 2
Settlements 0 0
Other 8 (2)
Discount rates | Pension Plan    
Defined Benefit Plan Disclosure [Line Items]    
Actuarial loss (gain) on benefit obligation (224) 181
Discount rates | Other Postretirement Benefits Plan    
Defined Benefit Plan Disclosure [Line Items]    
Actuarial loss (gain) on benefit obligation (117) 44
Demographic updates | Pension Plan    
Defined Benefit Plan Disclosure [Line Items]    
Actuarial loss (gain) on benefit obligation 76 (3)
Demographic updates | Other Postretirement Benefits Plan    
Defined Benefit Plan Disclosure [Line Items]    
Actuarial loss (gain) on benefit obligation 3 (11)
Mortality | Pension Plan    
Defined Benefit Plan Disclosure [Line Items]    
Actuarial loss (gain) on benefit obligation 19 (16)
Mortality | Other Postretirement Benefits Plan    
Defined Benefit Plan Disclosure [Line Items]    
Actuarial loss (gain) on benefit obligation 13 (4)
Per capita health care costs | Pension Plan    
Defined Benefit Plan Disclosure [Line Items]    
Actuarial loss (gain) on benefit obligation 0 0
Per capita health care costs | Other Postretirement Benefits Plan    
Defined Benefit Plan Disclosure [Line Items]    
Actuarial loss (gain) on benefit obligation (350) (10)
Other | Pension Plan    
Defined Benefit Plan Disclosure [Line Items]    
Actuarial loss (gain) on benefit obligation (2) 0
Other | Other Postretirement Benefits Plan    
Defined Benefit Plan Disclosure [Line Items]    
Actuarial loss (gain) on benefit obligation (5) (5)
Actuarial loss (gain) on benefit obligation | Pension Plan    
Defined Benefit Plan Disclosure [Line Items]    
Actuarial loss (gain) on benefit obligation (131) 162
Actuarial loss (gain) on benefit obligation | Other Postretirement Benefits Plan    
Defined Benefit Plan Disclosure [Line Items]    
Actuarial loss (gain) on benefit obligation $ (456) $ 14