Segment Reporting

12 Months Ended

Dec. 31, 2025

Segment Reporting [Abstract]

Segment Reporting

ASGN provides IT 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 Fortune 1000 and large mid-market companies. The Federal Government Segment provides advanced IT solutions in data and AI, cybersecurity, and enterprise transformation to the following four customer types: (i) Defense and Intelligence, (ii) National Security, (iii) Federal Civilian, and (iv) other clients. Virtually all of the Company's revenues are generated in the United States.

The Company's chief executive officer ("CEO") is the chief operating decision maker and he reviews revenues, gross profit and operating income for each segment. He also considers forecast-to-actual variances on a monthly basis for these financial measures when making decisions about allocating resources to the segments and uses these segment financial measures in the annual budget process. The CEO does not evaluate, manage or measure performance of segments using asset information. Accordingly, assets by reportable segment are not disclosed. Segment information is as follows (in millions):

	Year Ended December 31, 2025
	Commercial		Federal Government		Total
Revenues
Consulting	$	1,290.1	$	1,190.2	$	2,480.3
Assignment	1,500.1		—		1,500.1
	2,790.2		1,190.2		3,980.4
Costs of services	1,875.8		955.5		2,831.3
Gross profit	914.4		234.7		1,149.1
Segment depreciation and other amortization	39.3		5.9		45.2
Other segment expenses	587.6		110.1		697.7
Segment SG&A expenses	626.9		116.0		742.9
Amortization of intangible assets	39.4		25.4		64.8
Segment operating income	248.1		93.3		341.4
Corporate SG&A expenses					111.1
Operating income					230.3
Interest expense, net					67.7
Income before taxes					162.6
Provision for income taxes					49.1
Net income					$	113.5

	Year Ended December 31, 2024
	Commercial		Federal Government		Total
Revenues
Consulting	$	1,128.2	$	1,231.0	$	2,359.2
Assignment	1,740.5		—		1,740.5
	2,868.7		1,231.0		4,099.7
Costs of services	1,935.8		980.2		2,916.0
Gross profit	932.9		250.8		1,183.7
Segment depreciation and other amortization	29.6		5.0		34.6
Other segment expenses	588.3		121.0		709.3
Segment SG&A expenses	617.9		126.0		743.9
Amortization of intangible assets	28.5		29.6		58.1
Segment operating income	286.5		95.2		381.7
Corporate SG&A expenses					77.3
Operating income					304.4
Interest expense, net					64.3
Income before taxes					240.1
Provision for income taxes					64.9
Net income					$	175.2

	Year Ended December 31, 2023
	Commercial		Federal Government		Total
Revenues
Consulting	$	1,095.5	$	1,276.2	$	2,371.7
Assignment	2,078.9		—		2,078.9
	3,174.4		1,276.2		4,450.6
Costs of services	2,156.8		1,013.8		3,170.6
Gross profit	1,017.6		262.4		1,280.0
Segment depreciation and other amortization	20.3		4.3		24.6
Other segment expenses	618.4		122.0		740.4
Segment SG&A expenses	638.7		126.3		765.0
Amortization of intangible assets	34.8		36.9		71.7
Segment operating income	344.1		99.2		443.3
Corporate SG&A expenses					79.2
Operating income					364.1
Interest expense, net					66.4
Income before taxes					297.7
Provision for income taxes					78.4
Net income					$	219.3

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Costs of services include an immaterial amount of depreciation expense.

Other segment expenses include compensation-related expenses, rent, marketing, and other general and administrative expenses.

Corporate SG&A expenses include compensation-related expenses, stock-based compensation, depreciation, acquisition, integration and strategic planning expenses, and public company expenses.

Substantially all of the revenues from the Commercial Segment are generated from T&M contracts. Federal Government Segment revenues by contract type are as follows (in millions):

	Year Ended December 31,
	2025		2024		2023
FFP	$	348.7	$	367.7	$	386.7
T&M	474.6		522.0		504.9
Cost reimbursable	366.9		341.3		384.6
	$	1,190.2	$	1,231.0	$	1,276.2

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

	Year Ended December 31,
	2025		2024		2023
Department of Defense and Intelligence Agencies	$	526.0	$	560.1	$	614.6
National Security	310.0		279.4		276.2
Federal Civilian	224.9		267.2		261.6
Other	129.3		124.3		123.8
	$	1,190.2	$	1,231.0	$	1,276.2

Federal Government Segment revenues by customer type for the years ended December 31, 2024 and 2023 have been recast to conform to the current period presentation.