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EMPLOYEE BENEFITS - Schedule of Long-term Rates of Return on Pension and PBOP (Details)
Dec. 31, 2023
Dec. 31, 2022
United States    
Defined Contribution Plan Disclosure [Line Items]    
Target Asset Allocation (in percent)   15.00%
Assumed Rate of Return (in percent) 8.50% 8.50%
United States | Pension Plan    
Defined Contribution Plan Disclosure [Line Items]    
Target Asset Allocation (in percent) 0.00%  
United States | PBOP    
Defined Contribution Plan Disclosure [Line Items]    
Target Asset Allocation (in percent) 20.00%  
Global    
Defined Contribution Plan Disclosure [Line Items]    
Target Asset Allocation (in percent)   10.00%
Assumed Rate of Return (in percent) 8.75% 8.75%
Global | Pension Plan    
Defined Contribution Plan Disclosure [Line Items]    
Target Asset Allocation (in percent) 20.00%  
Global | PBOP    
Defined Contribution Plan Disclosure [Line Items]    
Target Asset Allocation (in percent) 0.00%  
Non-United States    
Defined Contribution Plan Disclosure [Line Items]    
Target Asset Allocation (in percent)   8.00%
Assumed Rate of Return (in percent) 8.50% 8.50%
Non-United States | Pension Plan    
Defined Contribution Plan Disclosure [Line Items]    
Target Asset Allocation (in percent) 0.00%  
Non-United States | PBOP    
Defined Contribution Plan Disclosure [Line Items]    
Target Asset Allocation (in percent) 11.00%  
Emerging Markets    
Defined Contribution Plan Disclosure [Line Items]    
Target Asset Allocation (in percent)   4.00%
Assumed Rate of Return (in percent) 10.00% 10.00%
Emerging Markets | Pension Plan    
Defined Contribution Plan Disclosure [Line Items]    
Target Asset Allocation (in percent) 0.00%  
Emerging Markets | PBOP    
Defined Contribution Plan Disclosure [Line Items]    
Target Asset Allocation (in percent) 6.00%  
Fixed Income    
Defined Contribution Plan Disclosure [Line Items]    
Target Asset Allocation (in percent)   13.00%
Assumed Rate of Return (in percent) 5.50% 4.00%
Fixed Income | Pension Plan    
Defined Contribution Plan Disclosure [Line Items]    
Target Asset Allocation (in percent) 16.00%  
Fixed Income | PBOP    
Defined Contribution Plan Disclosure [Line Items]    
Target Asset Allocation (in percent) 17.00%  
Public High Yield Fixed Income    
Defined Contribution Plan Disclosure [Line Items]    
Target Asset Allocation (in percent)   4.00%
Assumed Rate of Return (in percent) 7.50% 6.50%
Public High Yield Fixed Income | Pension Plan    
Defined Contribution Plan Disclosure [Line Items]    
Target Asset Allocation (in percent) 5.00%  
Public High Yield Fixed Income | PBOP    
Defined Contribution Plan Disclosure [Line Items]    
Target Asset Allocation (in percent) 0.00%  
United States Treasuries    
Defined Contribution Plan Disclosure [Line Items]    
Target Asset Allocation (in percent)   0.00%
Assumed Rate of Return (in percent) 4.50% 0.00%
United States Treasuries | Pension Plan    
Defined Contribution Plan Disclosure [Line Items]    
Target Asset Allocation (in percent) 11.00%  
United States Treasuries | PBOP    
Defined Contribution Plan Disclosure [Line Items]    
Target Asset Allocation (in percent) 0.00%  
Private Debt    
Defined Contribution Plan Disclosure [Line Items]    
Target Asset Allocation (in percent)   13.00%
Assumed Rate of Return (in percent) 10.00% 9.00%
Private Debt | Pension Plan    
Defined Contribution Plan Disclosure [Line Items]    
Target Asset Allocation (in percent) 10.00%  
Private Debt | PBOP    
Defined Contribution Plan Disclosure [Line Items]    
Target Asset Allocation (in percent) 13.00%  
Private Equity    
Defined Contribution Plan Disclosure [Line Items]    
Target Asset Allocation (in percent)   18.00%
Assumed Rate of Return (in percent) 12.00% 12.00%
Private Equity | Pension Plan    
Defined Contribution Plan Disclosure [Line Items]    
Target Asset Allocation (in percent) 23.00%  
Private Equity | PBOP    
Defined Contribution Plan Disclosure [Line Items]    
Target Asset Allocation (in percent) 18.00%  
Real Assets    
Defined Contribution Plan Disclosure [Line Items]    
Target Asset Allocation (in percent)   15.00%
Assumed Rate of Return (in percent) 7.50% 7.50%
Real Assets | Pension Plan    
Defined Contribution Plan Disclosure [Line Items]    
Target Asset Allocation (in percent) 15.00%  
Real Assets | PBOP    
Defined Contribution Plan Disclosure [Line Items]    
Target Asset Allocation (in percent) 15.00%