Annual report pursuant to Section 13 and 15(d)

COMMITMENTS AND CONTINGENT LIABILITIES (Commitment Obligations) (Details)

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COMMITMENTS AND CONTINGENT LIABILITIES (Commitment Obligations) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Commitments [Member]      
Guarantor Obligations [Line Items]      
Commitment amount, inflation factor for North America 1.80%    
Commitment amount, inflation factor for United Kingdom 2.90%    
commitment amount, inflation factor for Denmark 1.70%    
Commitment amount, inflation factor for the Netherlands 1.60%    
Minimum rentals to be received in future years under non-cancelable subleases $ 47.7    
Rent expense 220.1 $ 196.0 $ 159.5
Rent expense, contingent rentals 48.3 49.0 $ 43.7
Property Lease Guarantee [Member]      
Guarantor Obligations [Line Items]      
Guarantor obligations, maximum exposure, undiscounted 15.3    
Guarantor obligations, scheduled future minimum rentals per year, for the next five years 1.6    
Guarantee of Indebtedness of Others [Member]      
Guarantor Obligations [Line Items]      
Guarantor obligations, balance $ 18.3 $ 18.0