Segment Data (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Segment Reporting, Reconciling Item for Operating Profit from Segment to Consolidated [Line Items]
Revenues from services	$ 5,188.8	[1]	$ 5,172.3	[1]	$ 14,998.4	[1]	$ 15,475.4	[1]
Operating Unit Profit (Loss)	192.8		152.3		440.1		407.9
Corporate expenses	(21.9)		(24.5)		(69.9)		(73.7)
Intangible asset amortization expense	(8.5)	[2]	(9.2)	[2]	(25.3)	[2]	(27.4)	[2]
Operating Profit	162.4		118.6		344.9		306.8
Interest and other expenses	(5.4)		(10.1)		(27.2)		(33.2)
Earnings before income taxes	157.0		108.5		317.7		273.6
Franchise fees	6.6		6.4		18.0		17.9
Franchise revenue	285.4		270.5		792.4		794.4
United States [Member]
Segment Reporting, Reconciling Item for Operating Profit from Segment to Consolidated [Line Items]
Franchise fees	4.2		3.9		11.2		10.9
Franchise revenue	181.6		175.8		512.0		520.8
Americas reportable segment [Member]
Segment Reporting, Reconciling Item for Operating Profit from Segment to Consolidated [Line Items]
Revenues from services	1,143.8		1,149.1		3,372.5		3,439.8
Operating Unit Profit (Loss)	45.7	[2]	35.4	[2]	104.3	[2]	75.8	[2]
Americas reportable segment [Member] | United States [Member]
Segment Reporting, Reconciling Item for Operating Profit from Segment to Consolidated [Line Items]
Revenues from services	761.8	[3]	760.8	[3]	2,216.4	[3]	2,259.8	[3]
Operating Unit Profit (Loss)	34.3	[2]	24.5	[2]	72.3	[2]	39.1	[2]
Americas reportable segment [Member] | Other Americas [Member]
Segment Reporting, Reconciling Item for Operating Profit from Segment to Consolidated [Line Items]
Revenues from services	382.0		388.3		1,156.1		1,180.0
Operating Unit Profit (Loss)	11.4	[2]	10.9	[2]	32.0	[2]	36.7	[2]
Southern Europe reportable segment [Member]
Segment Reporting, Reconciling Item for Operating Profit from Segment to Consolidated [Line Items]
Revenues from services	1,918.3		1,828.0		5,316.8		5,474.2
Operating Unit Profit (Loss)	73.1	[2]	48.0	[2]	173.6	[2]	139.1	[2]
Southern Europe reportable segment [Member] | France [Member]
Segment Reporting, Reconciling Item for Operating Profit from Segment to Consolidated [Line Items]
Revenues from services	1,420.7		1,392.0		3,886.5		4,111.4
Operating Unit Profit (Loss)	58.4	[2]	36.4	[2]	129.0	[2]	93.9	[2]
Southern Europe reportable segment [Member] | Italy [Member]
Segment Reporting, Reconciling Item for Operating Profit from Segment to Consolidated [Line Items]
Revenues from services	269.7		246.8		806.0		788.3
Operating Unit Profit (Loss)	10.7	[2]	9.4	[2]	37.1	[2]	36.5	[2]
Southern Europe reportable segment [Member] | Other Southern Europe [Member]
Segment Reporting, Reconciling Item for Operating Profit from Segment to Consolidated [Line Items]
Revenues from services	227.9		189.2		624.3		574.5
Operating Unit Profit (Loss)	4.0	[2]	2.2	[2]	7.5	[2]	8.7	[2]
APME reportable segment [Member]
Segment Reporting, Reconciling Item for Operating Profit from Segment to Consolidated [Line Items]
Revenues from services	601.4		688.2		1,857.2		2,031.1
Operating Unit Profit (Loss)	19.2	[2]	20.8	[2]	54.2	[2]	62.2	[2]
Right Management reportable segment [Member]
Segment Reporting, Reconciling Item for Operating Profit from Segment to Consolidated [Line Items]
Revenues from services	77.2		80.1		234.7		243.6
Operating Unit Profit (Loss)	4.5	[2]	5.6	[2]	13.9	[2]	5.2	[2]
Northern Europe reportable segment [Member]
Segment Reporting, Reconciling Item for Operating Profit from Segment to Consolidated [Line Items]
Revenues from services	1,448.1		1,426.9		4,217.2		4,286.7
Operating Unit Profit (Loss)	$ 50.3	[2]	$ 42.5	[2]	$ 94.1	[2]	$ 125.6	[2]

[1] Our consolidated revenues from services include fees received from our franchise offices of $6.6 and $6.4 for the three months ended September 30, 2013 and 2012, and $18.0 and $17.9 for the nine months ended September 30, 2013 and 2012, respectively. These fees are primarily based on revenues generated by the franchise offices, which were $285.4 and $270.5 for the three months ended September 30, 2013 and 2012, respectively, and $792.4 and $794.4 for the nine months ended September 30, 2013 and 2012, respectively.

[2] We evaluate segment performance based on OUP, which is equal to segment revenues less cost of services and branch and national headquarters operating costs. This profit measure does not include goodwill and intangible asset impairment charges or amortization of intangibles related to acquisitions, interest and other income and expense amounts or income taxes.

[3] In the United States, where a majority of our franchises operate, revenues from services included fees received from the related franchise offices of $4.2 and $3.9 for the three months ended September 30, 2013 and 2012, respectively, and $11.2 and $10.9 for nine months ended September 30, 2013 and 2012, respectively. These fees are primarily based on revenues generated by the franchise offices, which were $181.6 and $175.8 for the three months ended September 30, 2013 and 2012, respectively, and $512.0 and $520.8 for the nine months ended September 30, 2013 and 2012, respectively.