v3.26.1
PENSION AND OTHER POSTRETIREMENT BENEFITS - PENSION AND OTHER POSTRETIREMENT BENEFITS - Schedule of Weighted Average Assumptions Used to Determine Benefit Obligations and Net Periodic Costs (Details)
5 Months Ended 7 Months Ended 12 Months Ended
Dec. 31, 2025
Aug. 06, 2025
Dec. 31, 2024
Dec. 31, 2023
Pension Benefits        
Weighted average assumptions used to determine benefit obligations at December 31:        
Discount rate 5.70% 5.70% 6.00% 5.60%
Rate of compensation increase 0.00% 0.00% 0.00% 0.00%
Weighted average assumptions used to determine net periodic costs:        
Discount rate 5.70% 6.00% 5.60% 5.90%
Expected long-term return on plan assets 5.60% 5.60% 5.70% 5.70%
Cash balance interest crediting rate 5.30% 5.30% 5.00% 5.00%
Rate of compensation increase 0.00% 0.00% 0.00% 0.00%
Postretirement Benefits        
Weighted average assumptions used to determine benefit obligations at December 31:        
Discount rate 5.40% 5.50% 6.10% 5.70%
Weighted average assumptions used to determine net periodic costs:        
Discount rate 5.50% 6.10% 5.70% 6.00%