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ACCRUED WORKERS' COMPENSATION COSTS - Schedule of Activities in Liability for Unpaid Claims and Claims Adjustment Expenses (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Liability for Unpaid Claims and Claims Adjustment Expense      
Total accrued costs, beginning of year $ 175 $ 189 $ 198
Incurred      
Current year 54 66 68
Prior years (26) (36) (32)
Total incurred 28 30 36
Paid      
Current year (9) (10) (10)
Prior years (36) (34) (35)
Total paid (45) (44) (45)
Total accrued costs, end of year $ 158 $ 175 $ 189