Goodwill and Intangibles (Tables)

6 Months Ended

Jun. 30, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Changes In Carrying Amounts of Goodwill By Reportable Segments

The following table provides disclosure of goodwill by segment as of June 30, 2022 and December 31, 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," The changes in the carrying amount of goodwill by reportable segment for the six months ended June 30, 2022 are as follows:

	Safety Services			Specialty Services		Total Goodwill
Goodwill as of December 31, 2021	$	925		$	181	$	1,106
Acquisitions		1,229			—		1,229
Measurement period adjustments and other (1)		(109	)		—		(109	)
Goodwill as of June 30, 2022	$	2,045		$	181	$	2,226

Measurement period adjustments and other includes fluctuations due to foreign currency translation and measurement period adjustments recorded during the six months ended June 30, 2022 related to purchase accounting adjustments for acquisitions completed during the previous twelve months (see Note 4 - "Business Combinations").

Summary of Identifiable Intangible Assets

The Company’s identifiable intangible assets are comprised of the following as of June 30, 2022 and December 31, 2021:

	June 30, 2022
	Weighted Average Remaining Useful Lives (in Years)		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Amortized intangibles:
Contractual backlog		0.5	$	109	$	(104	)	$	5
Customer relationships		11.5		1,605		(296	)		1,309
Trade names and trademarks		13.8		780		(66	)		714
Total			$	2,494	$	(466	)	$	2,028

	December 31, 2021
	Weighted Average Remaining Useful Lives (in Years)		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Amortized intangibles:
Contractual backlog		0.8	$	101	$	(97	)	$	4
Customer relationships		6.4		859		(221	)		638
Trade names and trademarks		12.7		280		(40	)		240
Total			$	1,240	$	(358	)	$	882

Summary of Amortization Expense Recognized on Intangible Assets

Amortization expense recognized on identifiable intangible assets is as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2022		2021		2022		2021
Cost of revenues	$	4	$	2	$	7	$	3
Selling, general, and administrative expenses		53		30		107		60
Total intangible asset amortization expense	$	57	$	32	$	114	$	63