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ACCRUED WORKERS' COMPENSATION COSTS - Schedule of Workers' Compensation Loss Reserve Activity (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward] |  |
Total accrued costs, beginning of period | $ 175 | $ 189
Incurred |  |
Current year | 16 | 16
Prior years | (4) | (6)
Total incurred | 12 | 10
Paid |  |
Current year | (1) | (1)
Prior years | (11) | (11)
Total paid | (12) | (12)
Total accrued costs, end of period | $ 175 | $ 187

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