COMMITMENTS AND CONTINGENCIES - Narrative (Details) R$ in Millions, $ in Millions		3 Months Ended	12 Months Ended
	Apr. 21, 2016 USD ($)	Dec. 31, 2018 USD ($)	Mar. 31, 2019 USD ($) tax_assessment	Mar. 31, 2019 BRL (R$) tax_assessment	Mar. 31, 2017 USD ($)
Loss Contingencies [Line Items]
Inventory impairment and other		$ 70.0			$ 93.0
Brazil | Assessment of Sales and Import Taxes
Loss Contingencies [Line Items]
Number of tax assessments | tax_assessment			6	6
Estimate of possible loss			$ 91.1	R$ 359.9
SunEdison, Inc
Loss Contingencies [Line Items]
Inventory impairment and other	$ 61.0
Sales returns recognized	90.0
Pending Litigation | SunEdison, Inc Filed Chapter 11 | Collectibility of Receivables
Loss Contingencies [Line Items]
Inventory received	98.6
Cash received	$ 69.2