FAIR VALUE MEASUREMENT - ASSETS AND LIABILITIES, RECURRING (Details) - Fair Value, Recurring - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	$ 33.0	$ 10.0
Liabilities	34.0	40.0
Interest rate swaps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	3.0
Liabilities	5.0
Cross currency basis swaps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	3.0
Liabilities	14.0	20.0
Foreign exchange forward contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	25.0	10.0
Liabilities	4.0	15.0
Long-term debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	2.0
Contingent considerations on acquisitions
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities	11.0	5.0
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	0.0	0.0
Liabilities	0.0	0.0
Level 1 | Interest rate swaps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	0.0
Liabilities	0.0
Level 1 | Cross currency basis swaps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	0.0
Liabilities	0.0	0.0
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
Level 1 | Long-term debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	0.0
Level 1 | Contingent considerations on acquisitions
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities	0.0	0.0
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	33.0	10.0
Liabilities	23.0	35.0
Level 2 | Interest rate swaps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	3.0
Liabilities	5.0
Level 2 | Cross currency basis swaps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	3.0
Liabilities	14.0	20.0
Level 2 | Foreign exchange forward contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	25.0	10.0
Liabilities	4.0	15.0
Level 2 | Long-term debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	2.0
Level 2 | Contingent considerations on acquisitions
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities	0.0	0.0
Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	0.0	0.0
Liabilities	11.0	5.0
Level 3 | Interest rate swaps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	0.0
Liabilities	0.0
Level 3 | Cross currency basis swaps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	0.0
Liabilities	0.0	0.0
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
Level 3 | Long-term debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	0.0
Level 3 | Contingent considerations on acquisitions
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities	$ 11.0	$ 5.0