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v3.21.2

Segment Reporting (Segment Reporting Information) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Revenues: |  |  |  |
Revenues | $ 1,073.8 | $ 904.4 | $ 2,955.7 | $ 2,601.7
Gross Profit: |  |  |  |
Total Gross Profit | 308.7 | 236.3 | 828.7 | 706.4
Operating Income (Loss): |  |  |  |
Total Operating Income | 100.1 | 73.5 | 255.4 | 207.3
Depreciation | 7.1 | 7.5 | 21.7 | 20.7
Amortization of intangible assets | 15.9 | 12.7 | 39.9 | 37.1
Commercial Business |  |  |  |
Revenues: |  |  |  |
Revenues | 774.9 | 615.8 | 2,136.7 | 1,860.7
Gross Profit: |  |  |  |
Total Gross Profit | 251.1 | 190.4 | 678.1 | 579.6
Operating Income (Loss): |  |  |  |
Total Operating Income | 98.5 | 72.7 | 258.8 | 207.6
Depreciation | 3.5 | 3.7 | 10.4 | 10.9
Amortization of intangible assets | 7.3 | 5.7 | 18.6 | 16.5
Federal Government Business |  |  |  |
Revenues: |  |  |  |
Revenues | 298.9 | 288.6 | 819.0 | 741.0
Gross Profit: |  |  |  |
Total Gross Profit | 57.6 | 45.9 | 150.6 | 126.8
Operating Income (Loss): |  |  |  |
Total Operating Income | 23.3 | 16.7 | 56.8 | 44.3
Depreciation | 2.3 | 2.5 | 6.8 | 6.5
Amortization of intangible assets | 8.6 | 7.0 | 21.3 | 20.6
Assignment | Commercial Business |  |  |  |
Revenues: |  |  |  |
Revenues | 587.3 | 519.2 | 1,687.2 | 1,589.2
Consulting | Commercial Business |  |  |  |
Revenues: |  |  |  |
Revenues | 187.6 | 96.6 | 449.5 | 271.5
Firm-fixed-price | Federal Government Business |  |  |  |
Revenues: |  |  |  |
Revenues | 94.5 | 82.0 | 217.0 | 201.2
Time and materials | Federal Government Business |  |  |  |
Revenues: |  |  |  |
Revenues | 106.0 | 80.8 | 296.9 | 234.6
Cost reimbursable | Federal Government Business |  |  |  |
Revenues: |  |  |  |
Revenues | $ 98.4 | $ 125.8 | $ 305.1 | $ 305.2

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