FINANCIAL INSTRUMENTS AND DERIVATIVES - BALANCE SHEET OFFSETTING (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Assets
Gross Amounts Recognized	$ 78.9	$ 45.7
Gross Amount Offset in the Consolidated Balance Sheets	0.0	0.0
Net Amounts Presented in the Consolidated Balance Sheets	78.9	45.7
Financial Instruments	(15.5)	(8.7)
Cash Collateral Received/Pledged	0.0	0.0
Net Amount	63.4	37.0
Liabilities
Derivative liability, fair value, gross	34.0	14.0
Gross Amount Offset in the Consolidated Balance Sheets	0.0	0.0
Net Amounts Presented in the Consolidated Balance Sheets	34.0	14.0
Financial Instruments	(15.5)	(8.7)
Cash Collateral Received/Pledged	0.0	0.0
Net Amount	18.5	5.3
Foreign exchange forward contracts
Assets
Gross Amounts Recognized	63.3	38.8
Gross Amount Offset in the Consolidated Balance Sheets	0.0	0.0
Net Amounts Presented in the Consolidated Balance Sheets	63.3	38.8
Financial Instruments	(12.2)	(7.8)
Cash Collateral Received/Pledged	0.0	0.0
Net Amount	51.1	31.0
Liabilities
Derivative liability, fair value, gross	5.6	3.2
Gross Amount Offset in the Consolidated Balance Sheets	0.0	0.0
Net Amounts Presented in the Consolidated Balance Sheets	5.6	3.2
Financial Instruments	(5.6)	(3.0)
Cash Collateral Received/Pledged	0.0	0.0
Net Amount	0.0	0.2
Cross currency basis swaps
Assets
Gross Amounts Recognized	15.6	6.9
Gross Amount Offset in the Consolidated Balance Sheets	0.0	0.0
Net Amounts Presented in the Consolidated Balance Sheets	15.6	6.9
Financial Instruments	(3.3)	(0.9)
Cash Collateral Received/Pledged	0.0	0.0
Net Amount	12.3	6.0
Interest rate swaps
Liabilities
Derivative liability, fair value, gross	28.4	10.8
Gross Amount Offset in the Consolidated Balance Sheets	0.0	0.0
Net Amounts Presented in the Consolidated Balance Sheets	28.4	10.8
Financial Instruments	(9.9)	(5.7)
Cash Collateral Received/Pledged	0.0	0.0
Net Amount	$ 18.5	$ 5.1