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v3.25.1

Segment Reporting - Segment Reporting Information (Details) - USD ($) | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Revenues: |  |
Revenues | $ 968,300,000 | $ 1,049,000,000
Costs of services | 692,900,000 | 752,800,000
Gross Profit: |  |
Total Gross Profit | 275,400,000 | 296,200,000
Selling, general, and administrative expenses | 214,500,000 | 210,200,000
Amortization of intangible assets | 14,300,000 | 15,100,000
Operating income | 46,600,000 | 70,900,000
Interest Expense, Operating and Nonoperating | 15,400,000 | 17,600,000
Income before income taxes | 31,200,000 | 53,300,000
Federal Government |  |
Revenues: |  |
Revenues | 296,100,000 | 317,500,000
Operating Segments [Member] |  |
Revenues: |  |
Revenues | 968,300,000 | 1,049,000,000
Costs of services | 692,900,000 | 752,800,000
Gross Profit: |  |
Total Gross Profit | 275,400,000 | 296,200,000
Other Depreciation and Amortization | 10,500,000 | 8,500,000
Other Expenses | 175,700,000 | 180,800,000
Selling, general, and administrative expenses | 186,200,000 | 189,300,000
Amortization of intangible assets | 14,300,000 | 15,100,000
Operating income | 74,900,000 | 91,800,000
Operating Segments [Member] | Assignment |  |
Revenues: |  |
Revenues | 382,100,000 | 454,500,000
Operating Segments [Member] | consulting [Member] |  |
Revenues: |  |
Revenues | 586,200,000 | 594,500,000
Operating Segments [Member] | Commercial |  |
Revenues: |  |
Revenues | 672,200,000 | 731,500,000
Costs of services | 454,500,000 | 497,700,000
Gross Profit: |  |
Total Gross Profit | 217,700,000 | 233,800,000
Other Depreciation and Amortization | 9,000,000.0 | 7,200,000
Other Expenses | 146,000,000.0 | 150,100,000
Selling, general, and administrative expenses | 155,000,000.0 | 157,300,000
Amortization of intangible assets | 7,800,000 | 7,700,000
Operating income | 54,900,000 | 68,800,000
Operating Segments [Member] | Commercial | Assignment |  |
Revenues: |  |
Revenues | 382,100,000 | 454,500,000
Operating Segments [Member] | Commercial | consulting [Member] |  |
Revenues: |  |
Revenues | 290,100,000 | 277,000,000.0
Operating Segments [Member] | Federal Government |  |
Revenues: |  |
Revenues | 296,100,000 | 317,500,000
Costs of services | 238,400,000 | 255,100,000
Gross Profit: |  |
Total Gross Profit | 57,700,000 | 62,400,000
Other Depreciation and Amortization | 1,500,000 | 1,300,000
Other Expenses | 29,700,000 | 30,700,000
Selling, general, and administrative expenses | 31,200,000 | 32,000,000.0
Amortization of intangible assets | 6,500,000 | 7,400,000
Operating income | 20,000,000.0 | 23,000,000.0
Operating Segments [Member] | Federal Government | Assignment |  |
Revenues: |  |
Revenues | 0 | 0
Operating Segments [Member] | Federal Government | consulting [Member] |  |
Revenues: |  |
Revenues | 296,100,000 | 317,500,000
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] |  |
Gross Profit: |  |
Corporate SG&A Expenses | $ 28,300,000 | $ 20,900,000

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