Segment Reporting

12 Months Ended

Dec. 31, 2023

Segment Reporting [Abstract]

Segment Reporting

ASGN provides information technology ("IT") services and professional solutions across the commercial and government sectors. ASGN operates through two segments, Commercial and Federal Government. The Commercial Segment, which is the largest segment, provides consulting, creative digital marketing, and permanent placement services primarily to large enterprises and Fortune 1000 companies. The Federal Government Segment provides mission-critical solutions to the Department of Defense, the intelligence community, and federal civilian agencies. Virtually all of the Company's revenues are generated in the United States.

Management evaluates the performance of each segment primarily based on revenues, gross profit, and operating income derived directly from internal financial reporting of the segments used for corporate management purposes, which is presented below by segment (in millions):

	Year Ended December 31,
	2023		2022		2021
Commercial
Revenues	$	3,174.4	$	3,435.7	$	2,927.1
Gross profit	1,017.6		1,126.2		934.9
Operating income	344.1		411.1		355.9
Depreciation and other amortization	20.3		16.3		13.9
Amortization of intangible assets	34.8		31.3		25.7
Federal Government
Revenues	$	1,276.2	$	1,145.4	$	1,082.4
Gross profit	262.4		243.4		207.6
Operating income	99.2		89.1		76.1
Depreciation and other amortization	5.7		5.5		8.5
Amortization of intangibles assets	36.9		33.8		30.0
Consolidated
Revenues	$	4,450.6	$	4,581.1	$	4,009.5
Gross profit	1,280.0		1,369.6		1,142.4
Operating income	364.1		409.5		350.9
Depreciation and other amortization	28.6		26.3		28.0
Amortization of intangible assets	71.7		65.1		55.7

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Depreciation and other amortization includes $0.7 million amortization related to capitalized cloud-based application implementation costs.

Consolidated operating income includes corporate operating expenses, which are not allocated to the segments. These include stock-based compensation expense, depreciation expense, compensation for corporate employees, acquisition, integration and strategic planning expenses and public company expenses.

Virtually all of the revenues from the Commercial Segment are generated from time-and-materials ("T&M") contracts where payments are based on fixed hourly rates for each direct labor hour expended and reimbursements for allowable material costs and out-of-pocket expenses. Revenues from the Federal Government Segment are generated from: (i) firm-fixed-price, (ii) T&M and, (iii) cost reimbursable contracts. Revenues by segment and by type are as follows (in millions):

	Year Ended December 31,
	2023		2022		2021
Commercial
Assignment	$	2,078.9	$	2,476.1	$	2,285.9
Consulting	1,095.5		959.6		641.2
	3,174.4		3,435.7		2,927.1
Federal Government
Firm-fixed-price	386.7		331.6		295.6
Time and materials	504.9		456.3		399.0
Cost reimbursable	384.6		357.5		387.8
	1,276.2		1,145.4		1,082.4
Consolidated	$	4,450.6	$	4,581.1	$	4,009.5

Federal Government Segment revenues by customer type are as follows (in millions):

	Year Ended December 31,
	2023		2022		2021
Department of Defense and Intelligence Agencies	$	614.6	$	606.3	$	589.7
Federal Civilian	621.6		503.4		421.8
Other	40.0		35.7		70.9
	$	1,276.2	$	1,145.4	$	1,082.4