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PENSION AND OTHER POST-EMPLOYMENT BENEFIT PLANS - Net Periodic Benefit Cost and Assumptions used to Estimate our Net Periodic Benefit Costs (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Pension      
Defined Benefit Plan Disclosure [Line Items]      
Service cost $ 36 $ 42 $ 36
Interest cost 106 98 139
Expected return on plan assets (160) (204) (234)
Amortization of actuarial loss 93 115 122
Amortization of prior service cost (credit) 3 3 3
Settlement charges 205 0 253
Net periodic benefit cost $ 283 $ 54 $ 319
Discount rate   2.50%  
Expected return on assets 5.00% 6.00% 6.50%
Lump sum or installment distributions election 60.00% 60.00% 60.00%
Pension | Minimum      
Defined Benefit Plan Disclosure [Line Items]      
Discount rate 2.90%   3.10%
Rate of compensation increase 2.00% 2.00% 2.00%
Pension | Maximum      
Defined Benefit Plan Disclosure [Line Items]      
Discount rate 3.10%   3.40%
Rate of compensation increase 13.00% 13.00% 13.00%
Other Post-employment Benefits      
Defined Benefit Plan Disclosure [Line Items]      
Service cost $ 0 $ 0 $ 0
Interest cost 3 3 4
Expected return on plan assets 0 0 0
Amortization of actuarial loss 5 5 4
Amortization of prior service cost (credit) (1) (1) (1)
Settlement charges 0 0 0
Net periodic benefit cost $ 7 $ 7 $ 7
Discount rate     3.00%
Other Post-employment Benefits | Minimum      
Defined Benefit Plan Disclosure [Line Items]      
Discount rate 2.60% 2.10%  
Weighted health care cost trend rate assumed 4.50% 4.50% 4.50%
Other Post-employment Benefits | Maximum      
Defined Benefit Plan Disclosure [Line Items]      
Discount rate 3.00% 2.40%  
Weighted health care cost trend rate assumed 6.20% 6.80% 7.30%