SEGMENT INFORMATION - Summary of Reconciliation Operating Income to EBITDA (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net revenues	$ 1,601	$ 1,614
EBITDA Reconciliation
Operating income (loss)	100	73
Plus:
Investment expense (income) and other, net	(3)	5
Loss on extinguishment of debt, net	0	(3)
Depreciation	19	19
Amortization	50	55
EBITDA	166	149
Total assets	7,192	7,766	$ 7,590
Capital expenditures	22	21
Corporate and Eliminations
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net revenues	(2)	(7)
EBITDA Reconciliation
Operating income (loss)	(32)	(23)
Plus:
Investment expense (income) and other, net	1
Loss on extinguishment of debt, net		(3)
Depreciation		1
Amortization	1	1
EBITDA	(30)	(24)
Total assets	411	518
Capital expenditures	7	1
Safety Services | Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net revenues	1,214	1,191
EBITDA Reconciliation
Operating income (loss)	125	96
Plus:
Investment expense (income) and other, net	(6)	3
Loss on extinguishment of debt, net		0
Depreciation	8	6
Amortization	36	41
EBITDA	163	146
Total assets	5,671	6,001
Capital expenditures	5	5
Specialty Services | Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net revenues	389	430
EBITDA Reconciliation
Operating income (loss)	7	0
Plus:
Investment expense (income) and other, net	2	2
Loss on extinguishment of debt, net		0
Depreciation	11	12
Amortization	13	13
EBITDA	33	27
Total assets	1,110	1,247
Capital expenditures	$ 10	$ 15