FINANCIAL INSTRUMENTS AND DERIVATIVES - BALANCE SHEET OFFSETTING (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Assets
Gross Amounts Recognized	$ 4.3	$ 45.7
Gross Amount Offset in the Consolidated Balance Sheets	0.0	0.0
Net Amounts Presented in the Consolidated Balance Sheets	4.3	45.7
Financial Instruments	(2.5)	(8.7)
Cash Collateral Received/Pledged	0.0	0.0
Net Amount	1.8	37.0
Liabilities
Derivative liability, fair value, gross	10.9	14.0
Gross Amount Offset in the Consolidated Balance Sheets	0.0	0.0
Net Amounts Presented in the Consolidated Balance Sheets	10.9	14.0
Financial Instruments	(2.5)	(8.7)
Cash Collateral Received/Pledged	0.0	0.0
Net Amount	8.4	5.3
Foreign exchange forward contracts
Assets
Gross Amounts Recognized	4.3	38.8
Gross Amount Offset in the Consolidated Balance Sheets	0.0	0.0
Net Amounts Presented in the Consolidated Balance Sheets	4.3	38.8
Financial Instruments	(2.5)	(7.8)
Cash Collateral Received/Pledged	0.0	0.0
Net Amount	1.8	31.0
Liabilities
Derivative liability, fair value, gross	4.4	3.2
Gross Amount Offset in the Consolidated Balance Sheets	0.0	0.0
Net Amounts Presented in the Consolidated Balance Sheets	4.4	3.2
Financial Instruments	0.0	(3.0)
Cash Collateral Received/Pledged	0.0	0.0
Net Amount	4.4	0.2
Cross currency basis swaps
Assets
Gross Amounts Recognized		6.9
Gross Amount Offset in the Consolidated Balance Sheets		0.0
Net Amounts Presented in the Consolidated Balance Sheets		6.9
Financial Instruments		(0.9)
Cash Collateral Received/Pledged		0.0
Net Amount		6.0
Liabilities
Derivative liability, fair value, gross	6.5
Gross Amount Offset in the Consolidated Balance Sheets	0.0
Net Amounts Presented in the Consolidated Balance Sheets	6.5
Financial Instruments	(2.5)
Cash Collateral Received/Pledged	0.0
Net Amount	$ 4.0
Interest rate swaps
Liabilities
Derivative liability, fair value, gross		10.8
Gross Amount Offset in the Consolidated Balance Sheets		0.0
Net Amounts Presented in the Consolidated Balance Sheets		10.8
Financial Instruments		(5.7)
Cash Collateral Received/Pledged		0.0
Net Amount		$ 5.1