FAIR VALUE MEASUREMENT - ASSETS AND LIABILITIES (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	$ 47.0	$ 45.3
Liabilities	18.4	12.5
Cross currency basis swaps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	1.0	11.6
Interest rate swaps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities	3.5	0.2
Foreign exchange forward contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	46.0	33.7
Liabilities	5.8	3.2
Contingent considerations on acquisitions
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities	9.1	9.1
Fair Value, Inputs, Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	0.0	0.0
Liabilities	0.0	0.0
Fair Value, Inputs, Level 1 | Cross currency basis swaps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	0.0	0.0
Fair Value, Inputs, Level 1 | Interest rate swaps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities	0.0	0.0
Fair Value, Inputs, Level 1 | Foreign exchange forward contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	0.0	0.0
Liabilities	0.0	0.0
Fair Value, Inputs, Level 1 | Contingent considerations on acquisitions
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities	0.0	0.0
Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	47.0	45.3
Liabilities	9.3	3.4
Fair Value, Inputs, Level 2 | Cross currency basis swaps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	1.0	11.6
Fair Value, Inputs, Level 2 | Interest rate swaps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities	3.5	0.2
Fair Value, Inputs, Level 2 | Foreign exchange forward contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	46.0	33.7
Liabilities	5.8	3.2
Fair Value, Inputs, Level 2 | Contingent considerations on acquisitions
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities	0.0	0.0
Fair Value, Inputs, Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	0.0	0.0
Liabilities	9.1	9.1
Fair Value, Inputs, Level 3 | Cross currency basis swaps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	0.0	0.0
Fair Value, Inputs, Level 3 | Interest rate swaps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities	0.0	0.0
Fair Value, Inputs, Level 3 | Foreign exchange forward contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	0.0	0.0
Liabilities	0.0	0.0
Fair Value, Inputs, Level 3 | Contingent considerations on acquisitions
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities	$ 9.1	$ 9.1