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Goodwill and Other Intangible Assets (Details) (USD $) In Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2011 | Dec. 31, 2010
Schedule Of Intangible Assets [Line Items] |  |  |  |
Goodwill | $ 989.0 | [1] |  |
Amortizable intangible assets [Abstract] |  |  |  |
Gross | 380.9 |  | 361.0 |
Accumulated Amortization | 166.6 |  | 138.1 |
Net | 214.3 |  | 222.9 |
Non-amortizable intangible assets [Abstract] |  |  |  |
Non-amortizable intangible assets | 153.1 |  | 153.3 |
Accumulated impairment loss | 513.4 |  |  |
Intangible assets [Abstract] |  |  |  |
Gross | 534.0 |  | 514.3 |
Accumulated Amortization | 166.6 |  | 138.1 |
Net | 367.4 |  | 376.2 |
Goodwill [Roll Forward] |  |  |  |
Balance, beginning of period | 954.1 | [1] |  |
Goodwill acquired | 41.8 |  |  |
Currency and other impacts | (6.9) |  |  |
Balance, end of period | 989.0 | [1] |  |
Accumulated impairment loss, beginning of period | 513.4 |  |  |
Accumulated impairment loss, end of period | 513.4 |  |  |
Technology [Member] |  |  |  |
Amortizable intangible assets [Abstract] |  |  |  |
Gross | 19.6 |  | 19.6 |
Accumulated Amortization | 19.6 |  | 19.6 |
Net | 0 |  | 0 |
Intangible assets [Abstract] |  |  |  |
Accumulated Amortization | 19.6 |  | 19.6 |
Franchise Agreements [Member] |  |  |  |
Amortizable intangible assets [Abstract] |  |  |  |
Gross | 18.0 |  | 18.0 |
Accumulated Amortization | 13.8 |  | 12.5 |
Net | 4.2 |  | 5.5 |
Intangible assets [Abstract] |  |  |  |
Accumulated Amortization | 13.8 |  | 12.5 |
Customer Relationships [Member] |  |  |  |
Amortizable intangible assets [Abstract] |  |  |  |
Gross | 329.8 |  | 309.4 |
Accumulated Amortization | 121.2 |  | 94.3 |
Net | 208.6 |  | 215.1 |
Intangible assets [Abstract] |  |  |  |
Accumulated Amortization | 121.2 |  | 94.3 |
Other Intangible Assets [Member] |  |  |  |
Amortizable intangible assets [Abstract] |  |  |  |
Gross | 13.5 |  | 14.0 |
Accumulated Amortization | 12.0 |  | 11.7 |
Net | 1.5 |  | 2.3 |
Intangible assets [Abstract] |  |  |  |
Accumulated Amortization | 12.0 |  | 11.7 |
Tradenames [Member] |  |  |  |
Non-amortizable intangible assets [Abstract] |  |  |  |
Non-amortizable intangible assets | 55.3 | [2] | 55.3 | [2]
Accumulated impairment loss | 139.5 |  | 139.5 |
Goodwill [Roll Forward] |  |  |  |
Accumulated impairment loss, beginning of period |  |  | 139.5 |
Accumulated impairment loss, end of period | 139.5 |  | 139.5 |
Reacquired Franchise Rights [Member] |  |  |  |
Non-amortizable intangible assets [Abstract] |  |  |  |
Non-amortizable intangible assets | 97.8 |  | 98.0 |
Americas [Member] |  |  |  |
Schedule Of Intangible Assets [Line Items] |  |  |  |
Goodwill | 461.4 | [3] |  |
Goodwill [Roll Forward] |  |  |  |
Balance, beginning of period | 465.5 | [3] |  |
Goodwill acquired | 0 |  |  |
Currency and other impacts | (4.1) |  |  |
Balance, end of period | 461.4 | [3] |  |
Americas [Member] | United States [Member] |  |  |  |
Schedule Of Intangible Assets [Line Items] |  |  |  |
Goodwill | 448.3 |  | 451.7 |
Goodwill [Roll Forward] |  |  |  |
Balance, beginning of period |  |  | 451.7 |
Balance, end of period | 448.3 |  | 451.7 |
Southern Europe [Member] |  |  |  |
Schedule Of Intangible Assets [Line Items] |  |  |  |
Goodwill | 60.4 | [4] |  |
Goodwill [Roll Forward] |  |  |  |
Balance, beginning of period | 33.1 | [4] |  |
Goodwill acquired | 27.7 |  |  |
Currency and other impacts | (0.4) |  |  |
Balance, end of period | 60.4 | [4] |  |
Southern Europe [Member] | France [Member] |  |  |  |
Schedule Of Intangible Assets [Line Items] |  |  |  |
Goodwill | 43.5 |  | 15.8 |
Goodwill [Roll Forward] |  |  |  |
Balance, beginning of period |  |  | 15.8 |
Balance, end of period | 43.5 |  | 15.8 |
Southern Europe [Member] | Italy [Member] |  |  |  |
Schedule Of Intangible Assets [Line Items] |  |  |  |
Goodwill | 4.6 |  | 4.6 |
Goodwill [Roll Forward] |  |  |  |
Balance, beginning of period |  |  | 4.6 |
Balance, end of period | 4.6 |  | 4.6 |
Northern Europe [Member] |  |  |  |
Schedule Of Intangible Assets [Line Items] |  |  |  |
Goodwill | 263.7 |  |  |
Goodwill [Roll Forward] |  |  |  |
Balance, beginning of period | 265.1 |  |  |
Goodwill acquired | 0 |  |  |
Currency and other impacts | (1.4) |  |  |
Balance, end of period | 263.7 |  |  |
APME [Member] |  |  |  |
Schedule Of Intangible Assets [Line Items] |  |  |  |
Goodwill | 78.9 |  |  |
Goodwill [Roll Forward] |  |  |  |
Balance, beginning of period | 64.9 |  |  |
Goodwill acquired | 14.1 |  |  |
Currency and other impacts | (0.1) |  |  |
Balance, end of period | 78.9 |  |  |
Right Management [Member] |  |  |  |
Schedule Of Intangible Assets [Line Items] |  |  |  |
Goodwill | 59.7 |  |  |
Goodwill [Roll Forward] |  |  |  |
Balance, beginning of period | 60.6 |  |  |
Goodwill acquired | 0 |  |  |
Currency and other impacts | (0.9) |  |  |
Balance, end of period | 59.7 |  |  |
Corporate [Member] |  |  |  |
Schedule Of Intangible Assets [Line Items] |  |  |  |
Goodwill | 64.9 | [5] |  |
Goodwill [Roll Forward] |  |  |  |
Balance, beginning of period | 64.9 | [5] |  |
Goodwill acquired | 0 |  |  |
Currency and other impacts | 0 |  |  |
Balance, end of period | 64.9 | [5] |  |
Goodwill attributable from acquisition of Jefferson Wells | 55.5 |  |  |
Other reporting units [Member] |  |  |  |
Schedule Of Intangible Assets [Line Items] |  |  |  |
Goodwill | 220.6 |  | 181.2 |
Goodwill [Roll Forward] |  |  |  |
Balance, beginning of period |  |  | 181.2 |
Balance, end of period | 220.6 |  | 181.2 |
United States [Member] |  |  |  |
Schedule Of Intangible Assets [Line Items] |  |  |  |
Goodwill | 503.8 |  | 507.2 |
Goodwill [Roll Forward] |  |  |  |
Balance, beginning of period |  |  | 507.2 |
Balance, end of period | 503.8 |  | 507.2 |
Elan [Member] |  |  |  |
Schedule Of Intangible Assets [Line Items] |  |  |  |
Goodwill | 123.0 |  | 123.2 |
Goodwill [Roll Forward] |  |  |  |
Balance, beginning of period |  |  | 123.2 |
Balance, end of period | 123.0 |  | 123.2 |
Netherlands (Vitae) [Member] |  |  |  |
Schedule Of Intangible Assets [Line Items] |  |  |  |
Goodwill | 81.9 |  | 81.9 |
Goodwill [Roll Forward] |  |  |  |
Balance, beginning of period |  |  | 81.9 |
Balance, end of period | $ 81.9 |  | $ 81.9 |
[1] | Balances were net of accumulated impairment loss of $513.4 as of both January 1, 2011 and September 30, 2011.
[2] | Balances were net of accumulated impairment loss of $139.5 as of both September 30, 2011 and December 31, 2010.
[3] | Balances related to the United States were $451.7 and $448.3 as of January 1, 2011 and September 30, 2011, respectively.
[4] | Balances related to France were $15.8 and $43.5 as of January 1, 2011 and September 30, 2011, respectively. Balances related to Italy were $4.6 as of both January 1, 2011 and September 30, 2011.
[5] | The majority of the Corporate balance relates to goodwill attributable from our acquisition of Jefferson Wells ($55.5) which is now part of the United States reporting unit. For purposes of monitoring our total assets by segment, we do not allocate the Corporate balance to the respective reportable segments as this is commensurate with how we operate our business. We do, however, include these balances within the appropriate reporting units for our goodwill impairment testing. See table below for the breakout of goodwill balances by reporting unit.

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