FINANCIAL INSTRUMENTS AND DERIVATIVES - BALANCE SHEET LOCATION (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Derivative [Line Items]
Derivative asset, fair value, gross	$ 27.9	$ 4.8
Derivative liability, fair value, gross	12.5	22.0
Prepaid Expenses and Other Current Assets, Net
Derivative [Line Items]
Derivative asset, fair value, gross	11.4	1.4
Not designated derivative assets, fair value	2.7	3.4
Other Noncurrent Assets, Net
Derivative [Line Items]
Derivative asset, fair value, gross	13.4	0.0
Not designated derivative assets, fair value	0.0	0.0
Accrued Liabilities
Derivative [Line Items]
Derivative liability, fair value, gross	6.8	13.7
Not designated derivative liabilities, fair value	4.3	3.7
Other Noncurrent Liabilities
Derivative [Line Items]
Derivative liability, fair value, gross	1.0	4.6
Not designated derivative liabilities, fair value	0.0	0.0
Foreign exchange forward contracts | Prepaid Expenses and Other Current Assets, Net
Derivative [Line Items]
Derivative asset, fair value, gross	11.4	1.4
Not designated derivative assets, fair value	2.7	3.4
Foreign exchange forward contracts | Other Noncurrent Assets, Net
Derivative [Line Items]
Derivative asset, fair value, gross	10.4	0.0
Not designated derivative assets, fair value	0.0	0.0
Foreign exchange forward contracts | Accrued Liabilities
Derivative [Line Items]
Derivative liability, fair value, gross	6.5	13.4
Not designated derivative liabilities, fair value	4.3	3.7
Foreign exchange forward contracts | Other Noncurrent Liabilities
Derivative [Line Items]
Derivative liability, fair value, gross	1.0	4.5
Not designated derivative liabilities, fair value	0.0	0.0
Interest rate swaps
Derivative [Line Items]
Derivative liability, fair value, gross	0.3	0.4
Interest rate swaps | Prepaid Expenses and Other Current Assets, Net
Derivative [Line Items]
Derivative asset, fair value, gross	0.0	0.0
Interest rate swaps | Other Noncurrent Assets, Net
Derivative [Line Items]
Derivative asset, fair value, gross	0.0	0.0
Interest rate swaps | Accrued Liabilities
Derivative [Line Items]
Derivative liability, fair value, gross	0.3	0.3
Interest rate swaps | Other Noncurrent Liabilities
Derivative [Line Items]
Derivative liability, fair value, gross	0.0	$ 0.1
Cross currency basis swaps
Derivative [Line Items]
Derivative asset, fair value, gross	3.0
Cross currency basis swaps | Prepaid Expenses and Other Current Assets, Net
Derivative [Line Items]
Derivative asset, fair value, gross	0.0
Cross currency basis swaps | Other Noncurrent Assets, Net
Derivative [Line Items]
Derivative asset, fair value, gross	3.0
Cross currency basis swaps | Accrued Liabilities
Derivative [Line Items]
Derivative liability, fair value, gross	0.0
Cross currency basis swaps | Other Noncurrent Liabilities
Derivative [Line Items]
Derivative liability, fair value, gross	$ 0.0