XML 86 R52.htm IDEA: XBRL DOCUMENT v3.8.0.1
Business Combinations, Goodwill and Other Intangible Assets, Goodwill (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Goodwill [Line Items]    
Intangible Assets, Net (Including Goodwill) $ 3,014.3  
Finite-Lived Intangible Assets, Net 296.2  
Indefinite-Lived Intangible Assets (Excluding Goodwill) 8.8  
Goodwill [Roll Forward]    
Goodwill 2,579.3 $ 2,141.5
Additions, net of adjustments 29.7 539.8
Impact of exchange rate movements 100.3 (102.0)
Goodwill 2,709.3 2,579.3
LaSalle [Member]    
Goodwill [Roll Forward]    
Goodwill 15.4 17.6
Additions, net of adjustments 0.0 0.0
Impact of exchange rate movements 1.1 (2.2)
Goodwill 16.5 15.4
Americas [Member] | Reportable Subsegments [Member]    
Goodwill [Roll Forward]    
Goodwill 1,406.1 1,161.1
Additions, net of adjustments 5.3 244.3
Impact of exchange rate movements 0.8 0.7
Goodwill 1,412.2 1,406.1
EMEA [Member] | Reportable Subsegments [Member]    
Goodwill [Roll Forward]    
Goodwill 851.7 696.2
Additions, net of adjustments 17.7 253.8
Impact of exchange rate movements 88.2 (98.3)
Goodwill 957.6 851.7
Asia Pacific [Member] | Reportable Subsegments [Member]    
Goodwill [Roll Forward]    
Goodwill 306.1 266.6
Additions, net of adjustments 6.7 41.7
Impact of exchange rate movements 10.2 (2.2)
Goodwill $ 323.0 $ 306.1