XML 68 R45.htm IDEA: XBRL DOCUMENT v2.4.1.9
Goodwill, Changes in Goodwill (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Goodwill [Roll Forward]      
Goodwill, beginning of period $ 1,090.9us-gaap_Goodwill [1],[2] $ 1,041.3us-gaap_Goodwill [1]  
Goodwill acquired 39.4us-gaap_GoodwillAcquiredDuringPeriod 52.2us-gaap_GoodwillAcquiredDuringPeriod  
Currency and other impacts (55.1)us-gaap_GoodwillOtherChanges (2.6)us-gaap_GoodwillOtherChanges  
Goodwill, end of period 1,075.2us-gaap_Goodwill [1],[2] 1,090.9us-gaap_Goodwill [1],[2]  
Accumulated impairment loss 513.4us-gaap_GoodwillImpairedAccumulatedImpairmentLoss 513.4us-gaap_GoodwillImpairedAccumulatedImpairmentLoss 513.4us-gaap_GoodwillImpairedAccumulatedImpairmentLoss
France [Member]      
Goodwill [Roll Forward]      
Goodwill, beginning of period     83.8us-gaap_Goodwill
/ dei_EntityByLocationAxis
= country_FR
Goodwill, end of period 76.9us-gaap_Goodwill
/ dei_EntityByLocationAxis
= country_FR		 87.3us-gaap_Goodwill
/ dei_EntityByLocationAxis
= country_FR		 83.8us-gaap_Goodwill
/ dei_EntityByLocationAxis
= country_FR
Italy [Member]      
Goodwill [Roll Forward]      
Goodwill, beginning of period     5.5us-gaap_Goodwill
/ dei_EntityByLocationAxis
= country_IT
Goodwill, end of period 5.0us-gaap_Goodwill
/ dei_EntityByLocationAxis
= country_IT		 5.7us-gaap_Goodwill
/ dei_EntityByLocationAxis
= country_IT		 5.5us-gaap_Goodwill
/ dei_EntityByLocationAxis
= country_IT
Americas [Member]      
Goodwill [Roll Forward]      
Goodwill, beginning of period 465.9us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_AmericasMember		 [3] 467.1us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_AmericasMember		 [3]  
Goodwill acquired 1.9us-gaap_GoodwillAcquiredDuringPeriod
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_AmericasMember		 0us-gaap_GoodwillAcquiredDuringPeriod
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_AmericasMember		  
Currency and other impacts (1.5)us-gaap_GoodwillOtherChanges
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_AmericasMember		 (1.2)us-gaap_GoodwillOtherChanges
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_AmericasMember		  
Goodwill, end of period 466.3us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_AmericasMember		 [3] 465.9us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_AmericasMember		 [3]  
Americas [Member] | United States [Member]      
Goodwill [Roll Forward]      
Goodwill, beginning of period     448.5us-gaap_Goodwill
/ dei_EntityByLocationAxis
= country_US
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_AmericasMember
Goodwill, end of period 450.4us-gaap_Goodwill
/ dei_EntityByLocationAxis
= country_US
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_AmericasMember		 448.5us-gaap_Goodwill
/ dei_EntityByLocationAxis
= country_US
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_AmericasMember		 448.5us-gaap_Goodwill
/ dei_EntityByLocationAxis
= country_US
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_AmericasMember
Southern Europe [Member]      
Goodwill [Roll Forward]      
Goodwill, beginning of period 107.8us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= man_SouthernEuropeMember		 [4] 103.3us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= man_SouthernEuropeMember		 [4]  
Goodwill acquired 5.6us-gaap_GoodwillAcquiredDuringPeriod
/ us-gaap_StatementBusinessSegmentsAxis
= man_SouthernEuropeMember		 0us-gaap_GoodwillAcquiredDuringPeriod
/ us-gaap_StatementBusinessSegmentsAxis
= man_SouthernEuropeMember		  
Currency and other impacts (12.9)us-gaap_GoodwillOtherChanges
/ us-gaap_StatementBusinessSegmentsAxis
= man_SouthernEuropeMember		 4.5us-gaap_GoodwillOtherChanges
/ us-gaap_StatementBusinessSegmentsAxis
= man_SouthernEuropeMember		  
Goodwill, end of period 100.5us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= man_SouthernEuropeMember		 [4] 107.8us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= man_SouthernEuropeMember		 [4]  
Northern Europe [Member]      
Goodwill [Roll Forward]      
Goodwill, beginning of period 318.2us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= man_NorthernEuropeMember		 270.7us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= man_NorthernEuropeMember		  
Goodwill acquired 28.0us-gaap_GoodwillAcquiredDuringPeriod
/ us-gaap_StatementBusinessSegmentsAxis
= man_NorthernEuropeMember		 43.2us-gaap_GoodwillAcquiredDuringPeriod
/ us-gaap_StatementBusinessSegmentsAxis
= man_NorthernEuropeMember		  
Currency and other impacts (34.9)us-gaap_GoodwillOtherChanges
/ us-gaap_StatementBusinessSegmentsAxis
= man_NorthernEuropeMember		 4.3us-gaap_GoodwillOtherChanges
/ us-gaap_StatementBusinessSegmentsAxis
= man_NorthernEuropeMember		  
Goodwill, end of period 311.3us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= man_NorthernEuropeMember		 318.2us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= man_NorthernEuropeMember		  
APME [Member]      
Goodwill [Roll Forward]      
Goodwill, beginning of period 72.0us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= man_ApmeMember		 73.2us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= man_ApmeMember		  
Goodwill acquired 3.9us-gaap_GoodwillAcquiredDuringPeriod
/ us-gaap_StatementBusinessSegmentsAxis
= man_ApmeMember		 9.0us-gaap_GoodwillAcquiredDuringPeriod
/ us-gaap_StatementBusinessSegmentsAxis
= man_ApmeMember		  
Currency and other impacts (5.8)us-gaap_GoodwillOtherChanges
/ us-gaap_StatementBusinessSegmentsAxis
= man_ApmeMember		 (10.2)us-gaap_GoodwillOtherChanges
/ us-gaap_StatementBusinessSegmentsAxis
= man_ApmeMember		  
Goodwill, end of period 70.1us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= man_ApmeMember		 72.0us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= man_ApmeMember		  
Right Management [Member]      
Goodwill [Roll Forward]      
Goodwill, beginning of period 62.1us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= man_RightManagementMember		 62.1us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= man_RightManagementMember		  
Goodwill acquired 0us-gaap_GoodwillAcquiredDuringPeriod
/ us-gaap_StatementBusinessSegmentsAxis
= man_RightManagementMember		 0us-gaap_GoodwillAcquiredDuringPeriod
/ us-gaap_StatementBusinessSegmentsAxis
= man_RightManagementMember		  
Currency and other impacts 0us-gaap_GoodwillOtherChanges
/ us-gaap_StatementBusinessSegmentsAxis
= man_RightManagementMember		 0us-gaap_GoodwillOtherChanges
/ us-gaap_StatementBusinessSegmentsAxis
= man_RightManagementMember		  
Goodwill, end of period 62.1us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= man_RightManagementMember		 62.1us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= man_RightManagementMember		  
Corporate [Member]      
Goodwill [Roll Forward]      
Goodwill, beginning of period 64.9us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember		 [5] 64.9us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember		 [5]  
Goodwill acquired 0us-gaap_GoodwillAcquiredDuringPeriod
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember		 0us-gaap_GoodwillAcquiredDuringPeriod
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember		  
Currency and other impacts 0us-gaap_GoodwillOtherChanges
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember		 0us-gaap_GoodwillOtherChanges
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember		  
Goodwill, end of period 64.9us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember		 [5] 64.9us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember		 [5]  
Jefferson Wells [Member]      
Goodwill [Roll Forward]      
Goodwill, end of period $ 55.5us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= man_JeffersonWellsMember		    
[1] Balances were net of accumulated impairment loss of $513.4 as of January 1, 2013, December 31, 2013 and December 31, 2014.
[2] Balances were net of accumulated impairment loss of $513.4 as of both December 31, 2014 and 2013.
[3] Balances related to United States were $448.5, $448.5 and $450.4 as of January 1, 2013, December 31, 2013 and December 31, 2014, respectively
[4] Balances related to France were $83.8, $87.3 and $76.9 as of January 1, 2013, December 31, 2013 and December 31, 2014, respectively. Balances related to Italy were $5.5, $5.7 and $5.0 as of January 1, 2013, December 31, 2013 and December 31, 2014, respectively.
[5] The majority of the Corporate balance as of December 31, 2014 relates to goodwill attributable to our acquisition of Jefferson Wells ($55.5) which is 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. We do, however, include these balances within the appropriate reporting units for our goodwill impairment testing. See the table below for the breakout of goodwill balances by reporting unit.