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ACCRUED WORKERS' COMPENSATION COSTS - Summary of Workers' Compensation Liabilities (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Insurance [Abstract]        
Total accrued costs, end of year $ 189 $ 198 $ 205 $ 214
Collateral paid to carriers and offset against accrued costs (7) (8)    
Total accrued costs, net of carrier collateral offset 182 190    
Payable in less than 1 year (net of collateral paid to carriers) 54 55    
Payable in more than 1 year (net of collateral paid to carriers) 128 135    
Collateral paid, current (2) 2    
Collateral paid, noncurrent $ 5 $ (6)