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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) | 6 Months Ended
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Jun. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill by Segment | The following table sets forth our goodwill, by segment, for the periods indicated:
|  | June 30, 2020 |  | December 31, 2019
|  | (Thousands of dollars)
Natural Gas Gathering and Processing |  | $ | — |  |  | $ | 153,404 |
Natural Gas Liquids |  | 371,217 |  |  | 371,217 |
Natural Gas Pipelines |  | 156,375 |  |  | 156,375 |
Total goodwill |  | $ | 527,592 |  |  | $ | 680,996 |

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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13854-109267 + Details
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