NET REVENUES - Summary of Disaggregated Net Revenues (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation of Revenue [Line Items]
Net revenues	$ 1,730	$ 1,771	$ 3,331	$ 3,385
Corporate and Eliminations
Disaggregation of Revenue [Line Items]
Net revenues	(2)	(9)	(4)	(16)
United States
Disaggregation of Revenue [Line Items]
Net revenues	1,074	1,123	2,037	2,093
United States \| Corporate and Eliminations
Disaggregation of Revenue [Line Items]
Net revenues	(2)	(9)	(4)	(16)
France
Disaggregation of Revenue [Line Items]
Net revenues	157	150	319	306
Other
Disaggregation of Revenue [Line Items]
Net revenues	499	498	975	986
Life Safety
Disaggregation of Revenue [Line Items]
Net revenues	1,164	1,098	2,267	2,166
Heating, Ventilation, and Air Conditioning ("HVAC")
Disaggregation of Revenue [Line Items]
Net revenues	115	127	226	250
Infrastructure/Utility
Disaggregation of Revenue [Line Items]
Net revenues	246	307	451	547
Fabrication
Disaggregation of Revenue [Line Items]
Net revenues	47	58	97	113
Specialty Contracting
Disaggregation of Revenue [Line Items]
Net revenues	160	190	294	325
Safety Services \| Operating Segments
Disaggregation of Revenue [Line Items]
Net revenues	1,279	1,225	2,493	2,416
Safety Services \| United States \| Operating Segments
Disaggregation of Revenue [Line Items]
Net revenues	623	583	1,204	1,143
Safety Services \| France \| Operating Segments
Disaggregation of Revenue [Line Items]
Net revenues	157	150	319	306
Safety Services \| Other \| Operating Segments
Disaggregation of Revenue [Line Items]
Net revenues	499	492	970	967
Safety Services \| Life Safety \| Operating Segments
Disaggregation of Revenue [Line Items]
Net revenues	1,164	1,098	2,267	2,166
Safety Services \| Heating, Ventilation, and Air Conditioning ("HVAC") \| Operating Segments
Disaggregation of Revenue [Line Items]
Net revenues	115	127	226	250
Safety Services \| Infrastructure/Utility \| Operating Segments
Disaggregation of Revenue [Line Items]
Net revenues	0	0	0	0
Safety Services \| Fabrication \| Operating Segments
Disaggregation of Revenue [Line Items]
Net revenues	0	0	0	0
Safety Services \| Specialty Contracting \| Operating Segments
Disaggregation of Revenue [Line Items]
Net revenues	0	0	0	0
Specialty Services \| Operating Segments
Disaggregation of Revenue [Line Items]
Net revenues	453	555	842	985
Specialty Services \| United States \| Operating Segments
Disaggregation of Revenue [Line Items]
Net revenues	453	549	837	966
Specialty Services \| France \| Operating Segments
Disaggregation of Revenue [Line Items]
Net revenues	0	0	0	0
Specialty Services \| Other \| Operating Segments
Disaggregation of Revenue [Line Items]
Net revenues	0	6	5	19
Specialty Services \| Life Safety \| Operating Segments
Disaggregation of Revenue [Line Items]
Net revenues	0	0	0	0
Specialty Services \| Heating, Ventilation, and Air Conditioning ("HVAC") \| Operating Segments
Disaggregation of Revenue [Line Items]
Net revenues	0	0	0	0
Specialty Services \| Infrastructure/Utility \| Operating Segments
Disaggregation of Revenue [Line Items]
Net revenues	246	307	451	547
Specialty Services \| Fabrication \| Operating Segments
Disaggregation of Revenue [Line Items]
Net revenues	47	58	97	113
Specialty Services \| Specialty Contracting \| Operating Segments
Disaggregation of Revenue [Line Items]
Net revenues	$ 160	$ 190	$ 294	$ 325