Net Revenues (Tables)

6 Months Ended

Jun. 30, 2022

Revenues [Abstract]

Summary of Disaggregated Net Revenues

The Company disaggregates its net revenues primarily by segment, service type, and country from which revenues are invoiced, as the nature, timing and uncertainty of cash flows are relatively consistent within each of these categories. The following tables provide disclosure of disaggregated net revenues by segment for the three and six months ended June 30, 2022 and 2021. Prior period balances in this table have been recast to reflect current period presentation, as described in Note 2 - "Basis of Presentation and Significant Accounting Policies." Disaggregated net revenues information is as follows:

	Three Months Ended June 30, 2022
	Safety Services		Specialty Services		Corporate and Eliminations			Consolidated
Life Safety	$	1,007	$	—	$	—		$	1,007
Mechanical		139		—		—			139
Infrastructure / Utility		—		366		—			366
Fabrication		—		53		—			53
Specialty Contracting		—		99		—			99
Corporate and Eliminations		—		—		(15	)		(15	)
Net revenues	$	1,146	$	518	$	(15	)	$	1,649

	Three Months Ended June 30, 2021
	Safety Services		Specialty Services		Corporate and Eliminations			Consolidated
Life Safety	$	403	$	—	$	—		$	403
Mechanical		109		—		—			109
Infrastructure / Utility		—		265		—			265
Fabrication		—		58		—			58
Specialty Contracting		—		153		—			153
Corporate and Eliminations		—		—		(10	)		(10	)
Net revenues	$	512	$	476	$	(10	)	$	978

	Six Months Ended June 30, 2022
	Safety Services		Specialty Services		Corporate and Eliminations			Consolidated
Life Safety	$	1,958	$	—	$	—		$	1,958
Mechanical		262		—		—			262
Infrastructure / Utility		—		508		—			508
Fabrication		—		107		—			107
Specialty Contracting		—		315		—			315
Corporate and Eliminations		—		—		(30	)		(30	)
Net revenues	$	2,220	$	930	$	(30	)	$	3,120

	Six Months Ended June 30, 2021
	Safety Services		Specialty Services		Corporate and Eliminations			Consolidated
Life Safety	$	771	$	—	$	—		$	771
Mechanical		207		—		—			207
Infrastructure / Utility		—		430		—			430
Fabrication		—		139		—			139
Specialty Contracting		—		251		—			251
Corporate and Eliminations		—		—		(17	)		(17	)
Net revenues	$	978	$	820	$	(17	)	$	1,781

	Three Months Ended June 30, 2022
	Safety Services		Specialty Services		Corporate and Eliminations			Consolidated
United States	$	534	$	507	$	(15	)	$	1,026
France		144		—		—			144
Other		468		11		—			479
Net revenues	$	1,146	$	518	$	(15	)	$	1,649

	Three Months Ended June 30, 2021
	Safety Services		Specialty Services		Corporate and Eliminations			Consolidated
United States	$	422	$	467	$	(10	)	$	879
France		—		—		—			—
Other		90		9		—			99
Net revenues	$	512	$	476	$	(10	)	$	978

	Six Months Ended June 30, 2022
	Safety Services		Specialty Services		Corporate and Eliminations			Consolidated
United States	$	1,008	$	916	$	(30	)	$	1,894
France		292		—		—			292
Other		920		14		—			934
Net revenues	$	2,220	$	930	$	(30	)	$	3,120

	Six Months Ended June 30, 2021
	Safety Services		Specialty Services		Corporate and Eliminations			Consolidated
United States	$	805	$	807	$	(17	)	$	1,595
France		—		—		—			—
Other		173		13		—			186
Net revenues	$	978	$	820	$	(17	)	$	1,781

Summary of Accounts Receivable, Net of Allowances, Contract Assets and Contract Liabilities from Contracts with Customer

The balances of accounts receivable, net of allowances, contract assets and contract liabilities from contracts with customers as of June 30, 2022 and December 31, 2021 are as follows:

	Accounts receivable, net of allowances		Contract assets		Contract liabilities
Balance as of June 30, 2022	$	1,232	$	480	$	421
Balance as of December 31, 2021		767		217		243