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GOODWILL AND INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Segment Reporting Information [Line Items] |  |  |
Goodwill | $ 527,592 | $ 527,592 |
Amortization expense for intangible assets | 10,400 | 10,400 | $ 10,800
Gross intangible assets and accumulated amortization [Abstract] |  |  |
Gross intangible assets | 381,435 | 381,435 |
Accumulated amortization | (156,160) | (145,732) |
Net intangible assets | 225,275 | 235,703 |
Future amortization expense for next five years [Abstract] |  |  |
Future amortization expense, year one | 10,400 |  |
Future amortization expense, year two | 10,400 |  |
Future amortization expense, year three | 10,400 |  |
Future amortization expense, year four | 10,400 |  |
Future amortization expense, year five | 10,400 |  |
Natural Gas Liquids [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Goodwill | $ 371,217 | 371,217 |
Natural Gas Liquids [Member] | Minimum [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life | 15 years |  |
Natural Gas Liquids [Member] | Maximum [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life | 40 years |  |
Natural Gas Pipelines |  |  |
Segment Reporting Information [Line Items] |  |  |
Goodwill | $ 156,375 | $ 156,375 |
Natural Gas Gathering and Processing |  |  |
Segment Reporting Information [Line Items] |  |  |
Goodwill, Impairment Loss |  |  | 153,400
Impairment of Intangible Assets (Excluding Goodwill) |  |  | $ 19,900

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