SUBSEQUENT EVENTS (Details) - Oil - Subsequent Events. - Commodity Contract	Feb. 01, 2022 BarrelOfButane $ / bbl
Subsequent Event [Line Items]
Number Of Barrels Per Day \| BarrelOfButane	1,000
Derivative, Nonmonetary Notional Amount \| BarrelOfButane	334,000
Weighted average swap price per barrel	84.61
Minimum
Subsequent Event [Line Items]
Derivative Price Risk Swap Contract Price	90.78
Maximum
Subsequent Event [Line Items]
Derivative Price Risk Swap Contract Price	80.01

Nominal number of units used to calculate payment on derivative.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 40
-Section 50
-Paragraph 5
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-URI http://asc.fasb.org/extlink&oid=123477628&loc=d3e90205-114008

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5580258-113959

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
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-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959

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Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant