Reorganization Costs (Details) (USD $) In Millions	9 Months Ended
	Sep. 30, 2011		Sep. 30, 2010
Reorganization Costs [Abstract]
Net reorganization costs	$ 2.1		$ 8.1
Restructuring reserve [Roll Forward]
Beginning balance	34.2
Severance costs, net	2.3
Office closure costs, net	(0.2)
Costs paid or utilized	(18.8)
Ending balance	17.5
Americas [Member]
Restructuring reserve [Roll Forward]
Beginning balance	7.4	[1]
Severance costs, net	(0.1)
Office closure costs, net	0.2
Costs paid or utilized	(4.5)
Ending balance	3.0	[1]
Americas [Member] | United States [Member]
Restructuring reserve [Roll Forward]
Beginning balance	7.4
Severance costs, net	(0.3)
Office closure costs, net	0.2
Costs paid or utilized	(4.4)
Ending balance	2.9
Southern Europe [Member]
Restructuring reserve [Roll Forward]
Beginning balance	5.6	[2]
Severance costs, net	0.9
Office closure costs, net	0.2
Costs paid or utilized	(2.6)
Ending balance	4.1	[2]
Southern Europe [Member] | France [Member]
Restructuring reserve [Roll Forward]
Beginning balance	5.6
Severance costs, net	0
Office closure costs, net	0.1
Costs paid or utilized	(2.2)
Ending balance	3.5
Southern Europe [Member] | Italy [Member]
Restructuring reserve [Roll Forward]
Beginning balance	0
Severance costs, net	0.9
Office closure costs, net	0
Costs paid or utilized	(0.5)
Ending balance	0.4
Northern Europe [Member]
Restructuring reserve [Roll Forward]
Beginning balance	5.0
Severance costs, net	1.0
Office closure costs, net	0.1
Costs paid or utilized	(2.4)
Ending balance	3.7
APME [Member]
Restructuring reserve [Roll Forward]
Beginning balance	0.7
Severance costs, net	0.4
Office closure costs, net	0
Costs paid or utilized	0
Ending balance	1.1
Right Management [Member]
Restructuring reserve [Roll Forward]
Beginning balance	14.4
Severance costs, net	0.1
Office closure costs, net	(0.7)
Costs paid or utilized	(8.2)
Ending balance	5.6
Corporate [Member]
Restructuring reserve [Roll Forward]
Beginning balance	1.1
Severance costs, net	0
Office closure costs, net	0
Costs paid or utilized	(1.1)
Ending balance	$ 0

[1] Balance related to United States was $7.4 as of January 1, 2011. During the first nine months of 2011, United States recorded severance reversals of ($0.3) and office closure costs of $0.2 and paid out $4.4, leaving a $2.9 liability as of September 30, 2011.

[2] Balance related to France was $5.6 as of January 1, 2011. During the first nine months of 2011, France recorded office closure costs of $0.1 and paid/utilized $2.2, leaving a $3.5 liability as of September 30, 2011. Italy had no liability as of January 1, 2011 but recorded severance costs of $0.9 in the first nine months of 2011 and paid out $0.5, leaving a $0.4 liability as of September 30, 2011.