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PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS - Narrative (Details) - USD ($)
9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Pension    
Pension and Other Postretirement Benefit Plans [Line Items]    
Employer contributions $ 25,000,000 $ 17,300,000
Expected future employer contributions 0  
Other Postretirement    
Pension and Other Postretirement Benefit Plans [Line Items]    
Employer contributions 0 $ 0
Expected future employer contributions $ 0