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Goodwill and Other Intangible Assets - Changes in Carrying Value of Goodwill by Reportable Segment (Parenthetical) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2019 | Jun. 30, 2019 | Sep. 30, 2019 | Apr. 03, 2019 | Dec. 31, 2018
Goodwill [Roll Forward] |  |  |  |  |
Goodwill | $ 1,231.8 |  | $ 1,231.8 |  | $ 1,297.1
Impairment charges | 0.0 |  | 64.0 |  |
Jefferson Wells |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |
Goodwill | 55.5 |  | 55.5 |  |
Americas | United States |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |
Goodwill | 485.2 |  | 485.2 |  | 476.5
Americas | United States | Jefferson Wells |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |
Goodwill | 540.7 |  | 540.7 |  | 532.0
Southern Europe |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |
Goodwill |  |  |  | $ 33.8 |
Southern Europe | France |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |
Goodwill | 65.5 |  | 65.5 |  | 68.9
Southern Europe | Italy |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |
Goodwill | 4.5 |  | 4.5 |  | 4.8
Northern Europe | Germany |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |
Goodwill | $ 64.8 |  | $ 64.8 |  | $ 129.2
Impairment charges |  | $ 60.2 |  |  |
APME | New Zealand |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |
Impairment charges |  | $ 3.8 |  |  |

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