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EMPLOYEE BENEFIT PLANS - Assumptions (Details)
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Weighted Average Defined Benefit Plan, Assumptions Used in Calculations [Abstract]    
Benefit obligation percentage of compensation increase 5.91% 5.96%
Periodic cost percentage of compensation increase 6.36% 6.37%
Expected long-term rates of return on pension plan assets (periodic cost) percentage 7.00% 6.25%
Following year 7.00% 5.40%
Ultimate rate to which cost increase is assumed to decline 3.90% 3.90%
Minimum    
Weighted Average Defined Benefit Plan, Assumptions Used in Calculations [Abstract]    
Periodic cost percentage 4.70% 4.84%
Minimum | Post-retirement Plans    
Weighted Average Defined Benefit Plan, Assumptions Used in Calculations [Abstract]    
Benefits obligations percentage 4.87% 5.07%
Periodic cost percentage 5.07% 2.71%
Maximum    
Weighted Average Defined Benefit Plan, Assumptions Used in Calculations [Abstract]    
Periodic cost percentage 5.71% 5.20%
Maximum | Post-retirement Plans    
Weighted Average Defined Benefit Plan, Assumptions Used in Calculations [Abstract]    
Benefits obligations percentage 4.98% 5.20%
Periodic cost percentage 5.20% 4.58%
Equitable Financial QP    
Weighted Average Defined Benefit Plan, Assumptions Used in Calculations [Abstract]    
Benefits obligations percentage 4.92% 5.13%
Equitable Excess Retirement Plan    
Weighted Average Defined Benefit Plan, Assumptions Used in Calculations [Abstract]    
Benefits obligations percentage 4.88% 5.09%
MONY Life Retirement Income Security Plan for Employees    
Weighted Average Defined Benefit Plan, Assumptions Used in Calculations [Abstract]    
Benefits obligations percentage 5.00% 5.22%
AB Qualified Retirement Plan    
Weighted Average Defined Benefit Plan, Assumptions Used in Calculations [Abstract]    
Periodic cost percentage 5.40% 5.50%
Other defined benefit plans | Minimum    
Weighted Average Defined Benefit Plan, Assumptions Used in Calculations [Abstract]    
Periodic cost percentage 4.74% 4.93%
Other defined benefit plans | Maximum    
Weighted Average Defined Benefit Plan, Assumptions Used in Calculations [Abstract]    
Periodic cost percentage 5.00% 5.22%
Cash balance interest crediting rate for pre-April 1, 2012 accruals    
Weighted Average Defined Benefit Plan, Assumptions Used in Calculations [Abstract]    
Periodic cost percentage 4.00% 4.00%
Cash balance interest crediting rate for post-April 1, 2012 accruals    
Weighted Average Defined Benefit Plan, Assumptions Used in Calculations [Abstract]    
Periodic cost percentage 2.50% 0.25%