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DISCONTINUED OPERATIONS AND DIVESTITURES - Narrative (Details) - Discontinued Operations, Disposed of by Sale $ in Thousands, ft³ in Billions			12 Months Ended
	Dec. 22, 2020 USD ($)	Aug. 12, 2019 USD ($)	Dec. 31, 2019 USD ($)	Jun. 28, 2019 USD ($) ft³
Mega Lubricants
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations
Proceeds from sale of assets	$ 22,400
Gain on disposition	$ 10,101
East Texas Pipeline
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations
Proceeds from sale of assets		$ 17,500
Gain on disposition		$ 16,154
Natural Gas Storage Assets
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations
Proceeds from sale of assets				$ 210,067
Gain on disposition			$ 178,781
Natural gas storage (in cubic feet) | ft³				50

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