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EMPLOYEE BENEFIT PLANS - Narrative (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]      
PBO in excess of plan assets $ 112 $ 144  
Life insurance, corporate or bank owned, amount $ 921 $ 886  
Pension Benefits      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, actual plan asset allocation percentage 100.00% 100.00%  
Life insurance, corporate or bank owned, amount $ 921 $ 886  
Benefits paid $ 191 $ 190  
Pension Benefits | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, actual plan asset allocation percentage 16.80% 18.20%  
Pension Benefits | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, actual plan asset allocation percentage 58.50% 53.50%  
Pension Benefits | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, actual plan asset allocation percentage 0.00% 0.00%  
Post-retirement Plans      
Defined Benefit Plan Disclosure [Line Items]      
Benefits paid $ 19 $ 20  
Post-retirement Plans | Executive Survivor Benefits Plan      
Defined Benefit Plan Disclosure [Line Items]      
Benefit cap 25    
Post-employment Benefits      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, liability 2 2  
Equitable 401(k) Plan      
Defined Benefit Plan Disclosure [Line Items]      
Expenses recognized 58 38 $ 64
Equitable Financial QP - Pre-1987 Plan      
Defined Benefit Plan Disclosure [Line Items]      
Benefits paid $ 2 $ 3