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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Entity [Line Items] |  |  |
Number Of Years Of Service Employees Must Work To Be Entitled To Postretirement Medical And Life Insurance Benefits | 5 years |  |
Impairment of equity investments | $ 0 | $ 0 | $ 37,730
Contract with Customer, Timing of Satisfaction of Performance Obligation and Payment | 5 to 10 years. |  |
Natural Gas Gathering And Processing |  |  |
Entity [Line Items] |  |  |
Impairment charges |  |  | 362,300
Goodwill, Impairment Loss |  |  | 153,400
Natural Gas Liquids |  |  |
Entity [Line Items] |  |  |
Impairment charges |  |  | $ 71,600
Venice Energy Services Company [Member] | Natural Gas Gathering And Processing |  |  |
Entity [Line Items] |  |  |
Net ownership percentage |  |  | 10.20%
Impairment of equity investments |  |  | $ 30,500
Impairment of equity investments - goodwill |  |  | $ 22,300
Chisholm Pipeline Company [Member] | Natural Gas Liquids |  |  |
Entity [Line Items] |  |  |
Net ownership percentage |  |  | 50.00%
Impairment of equity investments |  |  | $ 7,200
Northern Border Pipeline [Member] |  |  |
Entity [Line Items] |  |  |
Net ownership percentage | 50.00% |  |
Northern Border Pipeline [Member] | Natural Gas Pipelines |  |  |
Entity [Line Items] |  |  |
Net ownership percentage | 50.00% |  |
Roadrunner Gas Transmission [Member] |  |  |
Entity [Line Items] |  |  |
Net ownership percentage | 50.00% |  |
Roadrunner Gas Transmission [Member] | Natural Gas Pipelines |  |  |
Entity [Line Items] |  |  |
Net ownership percentage | 50.00% |  |
Overland Pass Pipeline Company [Member] |  |  |
Entity [Line Items] |  |  |
Net ownership percentage | 50.00% |  |
Overland Pass Pipeline Company [Member] | Natural Gas Liquids |  |  |
Entity [Line Items] |  |  |
Net ownership percentage | 50.00% |  |

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