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v3.19.3.a.u2

Business Segments Segment Reporting Information (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | [1] | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  | $ 1,025.2 | $ 1,002.7 | $ 972.3 | $ 923.7 | $ 929.7 | $ 906.4 | $ 878.5 | $ 685.2 | $ 3,923.9 | $ 3,399.8 | $ 2,626.0
Gross profit |  | $ 289.5 | $ 291.4 | $ 285.2 | $ 263.9 | $ 272.0 | $ 270.1 | $ 263.9 | $ 217.7 | 1,130.0 | 1,023.7 | 850.1
Operating Income (Loss) |  |  |  |  |  |  |  |  |  | 308.6 | 260.2 | 224.7
Amortization of intangible assets |  |  |  |  |  |  |  |  |  | 51.1 | 58.5 | 33.4
Apex |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 2,520.0 | 2,300.3 | 2,037.2
Gross profit |  |  |  |  |  |  |  |  |  | 746.0 | 687.9 | 606.3
Operating Income (Loss) |  |  |  |  |  |  |  |  |  | 287.7 | 262.4 | 222.0
Amortization of intangible assets |  |  |  |  |  |  |  |  |  | 20.3 | 26.2 | 29.4
Oxford |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 605.7 | 606.5 | 588.8
Gross profit |  |  |  |  |  |  |  |  |  | 242.9 | 248.9 | 243.8
Operating Income (Loss) |  |  |  |  |  |  |  |  |  | 48.4 | 54.1 | 53.8
Amortization of intangible assets |  |  |  |  |  |  |  |  |  | 3.7 | 4.2 | 4.0
ECS |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 798.2 | 493.0 | 0.0
Gross profit |  |  |  |  |  |  |  |  |  | 141.1 | 86.9 | 0.0
Operating Income (Loss) |  |  |  |  |  |  |  |  |  | 42.2 | 15.5 | 0.0
Amortization of intangible assets |  |  |  |  |  |  |  |  |  | 27.1 | 28.1 | 0.0
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual |  |  |  |  |  |  |  |  |  | 798.2 | 493.0 | 0.0
Corporate |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Operating Income (Loss) | [2] |  |  |  |  |  |  |  |  | $ (69.7) | $ (71.8) | $ (51.1)
[1] | ECS was acquired on April 2, 2018, see Note 4 – Acquisitions.
[2] | Corporate expenses primarily consist of consolidated stock-based compensation expense, compensation for corporate employees, acquisition, integration and strategic planning expenses, public company expenses and depreciation expense for corporate assets.

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