ACCRUED WORKERS' COMPENSATION COSTS - Schedule of Workers' Compensation Loss Reserve Activity (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Total accrued costs, beginning of period	$ 178	$ 189	$ 189	$ 198
Incurred
Current year	13	18	47	51
Prior years	(2)	(3)	(25)	(23)
Total incurred	11	15	22	28
Paid
Current year	(4)	(4)	(6)	(6)
Prior years	(7)	(8)	(27)	(28)
Total paid	(11)	(12)	(33)	(34)
Total accrued costs, end of period	$ 178	$ 192	$ 178	$ 192