DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES (Narrative) (Details) $ in Millions	3 Months Ended
Mar. 31, 2020 USD ($)
Derivatives designated as cash flow hedges: \| Designated as Hedging Instrument \| Carbon option contracts
Derivative [Line Items]
AOCI gain (loss) balance expected to be reclassified in next twelve months, net of tax	$ (3.4)
New Zealand JV \| Forecasted Sales and Purchases, term 1
Derivative [Line Items]
Length of time, foreign currency cash flow hedge	12 months
New Zealand JV \| Forecasted Sales and Purchases, term 2
Derivative [Line Items]
Percent of forecast sales and purchases hedged for 12 to 18 months	75.00%
New Zealand JV \| Minimum \| Forecasted Sales and Purchases, term 1
Derivative [Line Items]
Percent of forecast sales and purchases hedged for 12 months	50.00%
New Zealand JV \| Minimum \| Forecasted Sales and Purchases, term 2
Derivative [Line Items]
Length of time, foreign currency cash flow hedge	12 months
New Zealand JV \| Maximum \| Forecasted Sales and Purchases, term 1
Derivative [Line Items]
Percent of forecast sales and purchases hedged for 12 months	90.00%
New Zealand JV \| Maximum \| Forecasted Sales and Purchases, term 2
Derivative [Line Items]
Length of time, foreign currency cash flow hedge	18 months

Length of Time, Foreign Currency Cash Flow Hedge

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- Definition

Percentage Of Foreign Currency Exposure Hedged For Forecasted Sales In Next Twelve Months [Member]

+ References

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- Definition

Percentage of Foreign Currency Exposure Hedged For Forecasted Sales In Next Twelve to Eighteen Months

+ References

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- Definition

The estimated value of gains (losses), net anticipated to be transferred in the future from accumulated other comprehensive income into earnings.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=112277219&loc=d3e80845-113994

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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