ACCRUED WORKERS' COMPENSATION COSTS - Schedule of Workers' Compensation Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021
Insurance [Abstract]
Total accrued costs, end of period	$ 178	$ 187	$ 189	$ 189	$ 199	$ 198
Collateral paid to carriers and offset against accrued costs	(5)		(7)
Total accrued costs, net of carrier collateral offset	173		182
Payable in less than 1 year (net of collateral paid to carriers)	51		54
Payable in more than 1 year (net of collateral paid to carriers)	122		128
Total accrued costs, net of carrier collateral offset	173		182
Net of collateral paid to carriers, payable in less than one year	1		(2)
Net of collateral paid to carriers, payable in more than 1 year	$ (4)		$ 5