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Goodwill - Changes in Goodwill by Reportable Segment (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Goodwill [Roll Forward] |  |  |
Balance at beginning of period | $ 1,075.2 | $ 1,090.9 |
Goodwill acquired | 228.0 | 39.4 |
Currency impact and other | (45.8) | (55.1) |
Balance at end of period | 1,257.4 | 1,075.2 |
Accumulated impairment loss | 513.4 | 513.4 | $ 513.4
Right Management |  |  |
Goodwill [Roll Forward] |  |  |
Balance at beginning of period | 62.1 |  |
Balance at end of period | 62.1 | 62.1 |
Reportable segments | Americas |  |  |
Goodwill [Roll Forward] |  |  |
Balance at beginning of period | 466.3 | 465.9 |
Goodwill acquired | 52.9 | 1.9 |
Currency impact and other | (3.5) | (1.5) |
Balance at end of period | 515.7 | 466.3 |
Reportable segments | Americas | United States | Reportable subsegments |  |  |
Goodwill [Roll Forward] |  |  |
Balance at beginning of period | 450.4 | 448.5 |
Balance at end of period | 476.9 | 450.4 |
Reportable segments | Southern Europe |  |  |
Goodwill [Roll Forward] |  |  |
Balance at beginning of period | 100.5 | 107.8 |
Goodwill acquired | 2.6 | 5.6 |
Currency impact and other | (7.7) | (12.9) |
Balance at end of period | 95.4 | 100.5 |
Reportable segments | Southern Europe | France | Reportable subsegments |  |  |
Goodwill [Roll Forward] |  |  |
Balance at beginning of period | 76.9 | 87.3 |
Balance at end of period | 69.0 | 76.9 |
Reportable segments | Southern Europe | Italy | Reportable subsegments |  |  |
Goodwill [Roll Forward] |  |  |
Balance at beginning of period | 5.0 | 5.7 |
Balance at end of period | 4.5 | 5.0 |
Reportable segments | Northern Europe |  |  |
Goodwill [Roll Forward] |  |  |
Balance at beginning of period | 311.3 | 318.2 |
Goodwill acquired | 163.3 | 28.0 |
Currency impact and other | (30.9) | (34.9) |
Balance at end of period | 443.7 | 311.3 |
Reportable segments | APME |  |  |
Goodwill [Roll Forward] |  |  |
Balance at beginning of period | 70.1 | 72.0 |
Goodwill acquired | 9.2 | 3.9 |
Currency impact and other | (3.7) | (5.8) |
Balance at end of period | 75.6 | 70.1 |
Reportable segments | Right Management |  |  |
Goodwill [Roll Forward] |  |  |
Balance at beginning of period | 62.1 | 62.1 |
Goodwill acquired | 0.0 | 0.0 |
Currency impact and other | 0.0 | 0.0 |
Balance at end of period | 62.1 | 62.1 |
Corporate |  |  |
Goodwill [Roll Forward] |  |  |
Balance at beginning of period | 64.9 | 64.9 |
Goodwill acquired | 0.0 | 0.0 |
Currency impact and other | 0.0 | 0.0 |
Balance at end of period | 64.9 | $ 64.9 |
Corporate | Jefferson Wells |  |  |
Goodwill [Roll Forward] |  |  |
Balance at end of period | $ 55.5 |  |

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