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Employee Postretirement Benefits - Summary of Assumptions Used to Determine Benefit Obligations (Details)
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Participants Age 40 to 49, Non-Union    
Defined Benefit Plan Disclosure [Line Items]    
Long-Term Rate of Compensation Increase 3.50%  
Participants Age 50 and Older, Non-Union    
Defined Benefit Plan Disclosure [Line Items]    
Long-Term Rate of Compensation Increase 3.00%  
Pension Benefits (Pension Plan)    
Defined Benefit Plan Disclosure [Line Items]    
Discount Rate 5.57% 5.51%
Pension Benefits (Pension Plan) | Participants to Age 39    
Defined Benefit Plan Disclosure [Line Items]    
Long-Term Rate of Compensation Increase 4.50% 4.50%
Pension Benefits (Pension Plan) | Participants Ages 40 to 49    
Defined Benefit Plan Disclosure [Line Items]    
Long-Term Rate of Compensation Increase 4.50% 3.50%
Pension Benefits (Pension Plan) | Participants Age 50 and Older    
Defined Benefit Plan Disclosure [Line Items]    
Long-Term Rate of Compensation Increase 3.75% 2.75%
Pension Benefits (ESSRP)    
Defined Benefit Plan Disclosure [Line Items]    
Discount Rate 5.53% 5.51%
Long-Term Rate of Compensation Increase 3.00% 3.00%
Postretirement Benefits    
Defined Benefit Plan Disclosure [Line Items]    
Discount Rate 5.53% 5.52%
Healthcare Cost Immediate Trend Rate 6.97% 7.50%
Healthcare Cost Ultimate Trend Rate 4.00% 4.00%
Year the Rate Reaches the Ultimate Trend Rate 2048 2048