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v3.19.3

Goodwill and Identifiable Assets (Goodwill) (Details) - USD ($) $ in Millions | 9 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Dec. 31, 2018 | Dec. 31, 2017
Goodwill [Roll Forward] |  |  |  |
Gross goodwill | $ 1,444.7 |  | $ 1,421.1 | $ 894.1
Goodwill, Acquired During Period | 24.7 | $ 528.2 |  |
Translation adjustment | (1.1) | (1.2) |  |
Apex |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Gross goodwill | 662.1 |  | 662.1 | 662.1
Oxford |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Gross goodwill | 229.7 |  | 230.8 | $ 232.0
Translation adjustment | (1.1) | (1.2) |  |
ECS |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Gross goodwill | 552.9 |  | $ 528.2 |
Goodwill, Acquired During Period | $ 24.7 |  |  |
ECS | ECS |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Goodwill, Acquired During Period |  | $ 528.2 |  |

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