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FINANCIAL INSTRUMENTS (Schedule of currency swap transactions) (Details) - Jun. 30, 2021 - Designated as hedging instrument kr in Millions, $ in Millions | USD ($) | NOK (kr)
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Cross Currency Interest Rate Contract |  |
Derivative [Line Items] |  |
Derivative, notional amount | $ 76.8 | kr 600
Cross Currency Interest Rate Contract 2 |  |
Derivative [Line Items] |  |
Derivative, notional amount | 11.3 | 100
Cross Currency Interest Rate Contract 3 |  |
Derivative [Line Items] |  |
Derivative, notional amount | 80.5 | 700
Cross Currency Interest Rate Contract 4 |  |
Derivative [Line Items] |  |
Derivative, notional amount | $ 67.5 | kr 600

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- Definition Nominal or face amount used to calculate payment on derivative. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5579245-113959 + Details
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