Goodwill and Intangibles (Tables)

3 Months Ended

Mar. 31, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Changes In Carrying Amounts of Goodwill By Reportable Segments

The changes in the carrying amount of goodwill by reportable segment for the three months ended March 31, 2022 are as follows:

	Safety Services			Specialty Services		Total Goodwill
Goodwill as of December 31, 2021	$	925		$	181	$	1,106
Acquisitions		1,225			—		1,225
Measurement period adjustments and other (1)		(21	)		—		(21	)
Goodwill as of March 31, 2022	$	2,129		$	181	$	2,310

(1)Measurement period adjustments and other includes fluctuations due to foreign currency translation and purchase accounting adjustments recorded during the three months ended March 31, 2022 related to a reclassification between intangible assets and goodwill (see Note 4 - "Business Combinations").

Summary of Identifiable Intangible Assets

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

	March 31, 2022
	Weighted Average Remaining Useful Lives (in Years)		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Amortized intangibles:
Contractual backlog		0.7	$	111	$	(101	)	$	10
Customer relationships		11.8		1,667		(261	)		1,406
Trade names		14.0		820		(54	)		766
Total			$	2,598	$	(416	)	$	2,182

	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		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 are as follows:

	Three Months Ended March 31,
	2022		2021
Cost of revenues	$	3	$	1
Selling, general, and administrative expenses		54		30
Total intangible asset amortization expense	$	57	$	31