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SEGMENTS (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2020
Segment disclosure [Abstract] |  |  |  |  |  |  |  |  |
Revenues | $ 4,536,175 |  |  | $ 2,174,264 |  |  | $ 11,119,818 | $ 5,971,665 |
Cost of sales and fuel (exclusive of depreciation and operating costs) | (3,449,127) |  |  | (1,265,674) |  |  | (7,937,616) | (3,483,060) |
Operating costs | (265,117) |  |  | (204,929) |  |  | (770,973) | (636,433) |
Equity in net earnings from investments | 28,573 |  |  | 38,046 |  |  | 87,613 | 108,001 |
Depreciation and amortization | (154,542) |  |  | (153,245) |  |  | (468,583) | (426,014) |
Impairment charges | 0 |  |  | 0 |  |  | 0 | (641,754) |
Investments in unconsolidated affiliates | 797,233 |  |  | 790,373 |  |  | 797,233 | 790,373 | $ 805,032
Total assets | 23,872,331 |  |  | 22,780,876 |  |  | 23,872,331 | 22,780,876 | $ 23,078,754
Capital expenditures | 166,207 |  |  | 380,042 |  |  | 490,329 | 1,924,003 |
Net income | 392,018 | $ 342,139 | $ 386,176 | 312,316 | $ 134,321 | $ (141,857) | 1,120,333 | 304,780 |
Interest expense, net of capitalized interest | 184,049 |  |  | 176,371 |  |  | 554,529 | 535,955 |
Income tax expense | 121,899 |  |  | 106,555 |  |  | 354,100 | 94,300 |
Noncash compensation expense | 12,978 |  |  | 1,606 |  |  | 37,086 | 1,261 |
Other corporate costs and noncash items | (944) |  |  | (5,865) |  |  | 683 | (40,524) |
Gain (loss) on extinguishment of debt |  |  |  | 2,200 |  |  |  | 22,200 |
Impairment of equity investments | 0 |  |  | 0 |  |  | 0 | 37,730 |
Natural Gas Gathering And Processing [Member] |  |  |  |  |  |  |  |  |
Segment disclosure [Abstract] |  |  |  |  |  |  |  |  |
Impairment of long-lived assets |  |  |  |  |  |  |  | 380,500 |
Goodwill impairment charge |  |  |  |  |  |  |  | 153,400 |
Natural Gas Liquids |  |  |  |  |  |  |  |  |
Segment disclosure [Abstract] |  |  |  |  |  |  |  |  |
Impairment of long-lived assets |  |  |  |  |  |  |  | 70,200 |
Natural Gas Gathering And Processing [Member] |  |  |  |  |  |  |  |  |
Segment disclosure [Abstract] |  |  |  |  |  |  |  |  |
Revenues | 1,228,483 |  |  | 459,405 |  |  | 2,931,676 | 1,209,194 |
Cost of sales and fuel (exclusive of depreciation and operating costs) | (913,931) |  |  | (207,519) |  |  | (2,019,723) | (541,910) |
Operating costs | (95,210) |  |  | (69,351) |  |  | (266,237) | (232,489) |
Equity in net earnings from investments | 499 |  |  | (42) |  |  | 2,669 | (1,385) |
Noncash compensation expense and other | 9,816 |  |  | 655 |  |  | 15,254 | (1,865) |
Segment adjusted EBITDA | 229,657 |  |  | 183,148 |  |  | 663,639 | 431,545 |
Depreciation and amortization | (63,750) |  |  | (66,459) |  |  | (198,050) | (180,634) |
Impairment charges |  |  |  |  |  |  |  | (564,353) |
Investments in unconsolidated affiliates | 25,734 |  |  | 2,276 |  |  | 25,734 | 2,276 |
Total assets | 6,725,753 |  |  | 6,437,301 |  |  | 6,725,753 | 6,437,301 |
Capital expenditures | 80,839 |  |  | 63,030 |  |  | 177,362 | 362,811 |
Natural Gas Gathering And Processing [Member] | Venice Energy Services Company [Member] |  |  |  |  |  |  |  |  |
Segment disclosure [Abstract] |  |  |  |  |  |  |  |  |
Impairment of equity investments |  |  |  |  |  |  |  | 30,500 |
Natural Gas Liquids |  |  |  |  |  |  |  |  |
Segment disclosure [Abstract] |  |  |  |  |  |  |  |  |
Revenues | 4,029,616 |  |  | 1,832,217 |  |  | 9,639,159 | 4,938,523 |
Cost of sales and fuel (exclusive of depreciation and operating costs) | (3,377,903) |  |  | (1,289,667) |  |  | (7,838,141) | (3,473,575) |
Operating costs | (128,809) |  |  | (101,223) |  |  | (382,012) | (297,771) |
Equity in net earnings from investments | 5,384 |  |  | 8,018 |  |  | 14,078 | 31,083 |
Noncash compensation expense and other | 3,871 |  |  | 1,898 |  |  | 14,994 | 1,541 |
Segment adjusted EBITDA | 532,159 |  |  | 451,243 |  |  | 1,448,078 | 1,199,801 |
Depreciation and amortization | (74,986) |  |  | (71,534) |  |  | (223,679) | (198,440) |
Impairment charges |  |  |  |  |  |  |  | (77,401) |
Investments in unconsolidated affiliates | 417,573 |  |  | 426,621 |  |  | 417,573 | 426,621 |
Total assets | 14,898,568 |  |  | 13,449,529 |  |  | 14,898,568 | 13,449,529 |
Capital expenditures | 53,778 |  |  | 298,891 |  |  | 225,766 | 1,504,881 |
Natural Gas Liquids | Chisholm Pipeline Company [Member] |  |  |  |  |  |  |  |  |
Segment disclosure [Abstract] |  |  |  |  |  |  |  |  |
Impairment of equity investments |  |  |  |  |  |  |  | 7,200 |
Natural Gas Pipelines |  |  |  |  |  |  |  |  |
Segment disclosure [Abstract] |  |  |  |  |  |  |  |  |
Revenues | 120,480 |  |  | 117,296 |  |  | 481,738 | 360,137 |
Cost of sales and fuel (exclusive of depreciation and operating costs) | (344) |  |  | (3,389) |  |  | (10,901) | (5,096) |
Operating costs | (41,020) |  |  | (34,567) |  |  | (121,843) | (100,966) |
Equity in net earnings from investments | 22,690 |  |  | 30,070 |  |  | 70,866 | 78,303 |
Noncash compensation expense and other | 920 |  |  | 427 |  |  | 3,737 | (184) |
Segment adjusted EBITDA | 102,726 |  |  | 109,837 |  |  | 423,597 | 332,194 |
Depreciation and amortization | (14,821) |  |  | (14,243) |  |  | (43,786) | (43,937) |
Impairment charges |  |  |  |  |  |  |  | 0 |
Investments in unconsolidated affiliates | 353,926 |  |  | 361,476 |  |  | 353,926 | 361,476 |
Total assets | 2,129,406 |  |  | 2,082,846 |  |  | 2,129,406 | 2,082,846 |
Capital expenditures | 24,587 |  |  | 12,978 |  |  | 73,540 | 40,478 |
Total Segments [Member] |  |  |  |  |  |  |  |  |
Segment disclosure [Abstract] |  |  |  |  |  |  |  |  |
Revenues | 5,378,579 |  |  | 2,408,918 |  |  | 13,052,573 | 6,507,854 |
Cost of sales and fuel (exclusive of depreciation and operating costs) | (4,292,178) |  |  | (1,500,575) |  |  | (9,868,765) | (4,020,581) |
Operating costs | (265,039) |  |  | (205,141) |  |  | (770,092) | (631,226) |
Equity in net earnings from investments | 28,573 |  |  | 38,046 |  |  | 87,613 | 108,001 |
Noncash compensation expense and other | 14,607 |  |  | 2,980 |  |  | 33,985 | (508) |
Segment adjusted EBITDA | 864,542 |  |  | 744,228 |  |  | 2,535,314 | 1,963,540 |
Depreciation and amortization | (153,557) |  |  | (152,236) |  |  | (465,515) | (423,011) |
Impairment charges |  |  |  |  |  |  |  | (641,754) |
Investments in unconsolidated affiliates | 797,233 |  |  | 790,373 |  |  | 797,233 | 790,373 |
Total assets | 23,753,727 |  |  | 21,969,676 |  |  | 23,753,727 | 21,969,676 |
Capital expenditures | 159,204 |  |  | 374,899 |  |  | 476,668 | 1,908,170 |
Other and Eliminations |  |  |  |  |  |  |  |  |
Segment disclosure [Abstract] |  |  |  |  |  |  |  |  |
Revenues | (842,404) |  |  | (234,654) |  |  | (1,932,755) | (536,189) |
Cost of sales and fuel (exclusive of depreciation and operating costs) | 843,051 |  |  | 234,901 |  |  | 1,931,149 | 537,521 |
Operating costs | (78) |  |  | 212 |  |  | (881) | (5,207) |
Equity in net earnings from investments | 0 |  |  | 0 |  |  | 0 | 0 |
Depreciation and amortization | (985) |  |  | (1,009) |  |  | (3,068) | (3,003) |
Impairment charges |  |  |  |  |  |  |  | 0 |
Investments in unconsolidated affiliates | 0 |  |  | 0 |  |  | 0 | 0 |
Total assets | 118,604 |  |  | 811,200 |  |  | 118,604 | 811,200 |
Capital expenditures | 7,003 |  |  | 5,143 |  |  | 13,661 | 15,833 |
Natural Gas Gathering and Processing Intersegment [Member] | Natural Gas Gathering And Processing [Member] |  |  |  |  |  |  |  |  |
Segment disclosure [Abstract] |  |  |  |  |  |  |  |  |
Revenues | 837,700 |  |  | 235,600 |  |  | 1,900,000 | 557,100 |
Natural Gas Liquids Regulated [Member] | Natural Gas Liquids |  |  |  |  |  |  |  |  |
Segment disclosure [Abstract] |  |  |  |  |  |  |  |  |
Revenues | 618,800 |  |  | 541,700 |  |  | 1,800,000 | 1,500,000 |
Cost of sales and fuel (exclusive of depreciation and operating costs) | (160,000) |  |  | (137,500) |  |  | (449,100) | (375,000) |
Natural Gas Liquids Regulated [Member] | Natural Gas Liquids | Operating Segments [Member] |  |  |  |  |  |  |  |  |
Segment disclosure [Abstract] |  |  |  |  |  |  |  |  |
Revenues | 567,700 |  |  | 495,400 |  |  | 1,600,000 | 1,300,000 |
Natural Gas Pipelines Regulated [Member] | Natural Gas Pipelines |  |  |  |  |  |  |  |  |
Segment disclosure [Abstract] |  |  |  |  |  |  |  |  |
Revenues | 72,400 |  |  | 71,800 |  |  | 323,200 | 225,600 |
Cost of sales and fuel (exclusive of depreciation and operating costs) | (3,900) |  |  | (9,600) |  |  | (20,500) | (22,400) |
Noncustomer [Domain] |  |  |  |  |  |  |  |  |
Segment disclosure [Abstract] |  |  |  |  |  |  |  |  |
Revenues | (178,700) |  |  | 4,000 |  |  | (386,900) | 103,000 |
NGL and Condensate Sales [Member] |  |  |  |  |  |  |  |  |
Segment disclosure [Abstract] |  |  |  |  |  |  |  |  |
Revenues | 3,830,792 |  |  | 1,673,202 |  |  | 9,051,212 | 4,485,552 |
NGL and Condensate Sales [Member] | Natural Gas Gathering And Processing [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 815,993 |  |  | 239,810 |  |  | 1,874,183 | 569,308 |
NGL and Condensate Sales [Member] | Natural Gas Liquids |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 3,853,078 |  |  | 1,658,123 |  |  | 9,097,512 | 4,429,414 |
NGL and Condensate Sales [Member] | Natural Gas Pipelines |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 0 |  |  | 0 |  |  | 0 | 0 |
NGL and Condensate Sales [Member] | Total Segments [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 4,669,071 |  |  | 1,897,933 |  |  | 10,971,695 | 4,998,722 |
NGL and Condensate Sales [Member] | Other and Eliminations |  |  |  |  |  |  |  |  |
Segment disclosure [Abstract] |  |  |  |  |  |  |  |  |
Revenues | (838,279) |  |  | (224,731) |  |  | (1,920,483) | (513,170) |
Residue Natural Gas Sales [Member] |  |  |  |  |  |  |  |  |
Segment disclosure [Abstract] |  |  |  |  |  |  |  |  |
Revenues | 370,820 |  |  | 176,593 |  |  | 1,056,328 | 513,608 |
Residue Natural Gas Sales [Member] | Natural Gas Gathering And Processing [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 370,801 |  |  | 178,492 |  |  | 940,850 | 518,435 |
Residue Natural Gas Sales [Member] | Natural Gas Liquids |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 0 |  |  | 0 |  |  | 0 | 0 |
Residue Natural Gas Sales [Member] | Natural Gas Pipelines |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 19 |  |  | 3,998 |  |  | 115,478 | 6,033 |
Residue Natural Gas Sales [Member] | Total Segments [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 370,820 |  |  | 182,490 |  |  | 1,056,328 | 524,468 |
Residue Natural Gas Sales [Member] | Other and Eliminations |  |  |  |  |  |  |  |  |
Segment disclosure [Abstract] |  |  |  |  |  |  |  |  |
Revenues | 0 |  |  | (5,897) |  |  | 0 | (10,860) |
Gathering, Processing and Exchange Services Revenue |  |  |  |  |  |  |  |  |
Segment disclosure [Abstract] |  |  |  |  |  |  |  |  |
Revenues | 168,969 |  |  | 168,669 |  |  | 477,650 | 481,265 |
Gathering, Processing and Exchange Services Revenue | Natural Gas Gathering And Processing [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 35,395 |  |  | 36,459 |  |  | 101,221 | 110,345 |
Gathering, Processing and Exchange Services Revenue | Natural Gas Liquids |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 133,574 |  |  | 132,210 |  |  | 376,429 | 370,920 |
Gathering, Processing and Exchange Services Revenue | Natural Gas Pipelines |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 0 |  |  | 0 |  |  | 0 | 0 |
Gathering, Processing and Exchange Services Revenue | Total Segments [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 168,969 |  |  | 168,669 |  |  | 477,650 | 481,265 |
Gathering, Processing and Exchange Services Revenue | Other and Eliminations |  |  |  |  |  |  |  |  |
Segment disclosure [Abstract] |  |  |  |  |  |  |  |  |
Revenues | 0 |  |  | 0 |  |  | 0 | 0 |
Transportation and Storage Revenue [Member] |  |  |  |  |  |  |  |  |
Segment disclosure [Abstract] |  |  |  |  |  |  |  |  |
Revenues | 157,259 |  |  | 149,224 |  |  | 482,094 | 473,565 |
Transportation and Storage Revenue [Member] | Natural Gas Gathering And Processing [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 0 |  |  | 0 |  |  | 0 | 0 |
Transportation and Storage Revenue [Member] | Natural Gas Liquids |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 40,465 |  |  | 39,774 |  |  | 127,057 | 131,410 |
Transportation and Storage Revenue [Member] | Natural Gas Pipelines |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 120,294 |  |  | 113,047 |  |  | 365,578 | 353,188 |
Transportation and Storage Revenue [Member] | Total Segments [Member] |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 160,759 |  |  | 152,821 |  |  | 492,635 | 484,598 |
Transportation and Storage Revenue [Member] | Other and Eliminations |  |  |  |  |  |  |  |  |
Segment disclosure [Abstract] |  |  |  |  |  |  |  |  |
Revenues | (3,500) |  |  | (3,597) |  |  | (10,541) | (11,033) |
Other [Member] |  |  |  |  |  |  |  |  |
Segment disclosure [Abstract] |  |  |  |  |  |  |  |  |
Revenues | 8,335 |  |  | 6,576 |  |  | 52,534 | 17,675 |
Other [Member] | Natural Gas Gathering And Processing [Member] |  |  |  |  |  |  |  |  |
Segment disclosure [Abstract] |  |  |  |  |  |  |  |  |
Revenues | 6,294 |  |  | 4,644 |  |  | 15,422 | 11,106 |
Other [Member] | Natural Gas Liquids |  |  |  |  |  |  |  |  |
Segment disclosure [Abstract] |  |  |  |  |  |  |  |  |
Revenues | 2,499 |  |  | 2,110 |  |  | 38,161 | 6,779 |
Other [Member] | Natural Gas Pipelines |  |  |  |  |  |  |  |  |
Segment disclosure [Abstract] |  |  |  |  |  |  |  |  |
Revenues | 167 |  |  | 251 |  |  | 682 | 916 |
Other [Member] | Total Segments [Member] |  |  |  |  |  |  |  |  |
Segment disclosure [Abstract] |  |  |  |  |  |  |  |  |
Revenues | 8,960 |  |  | 7,005 |  |  | 54,265 | 18,801 |
Other [Member] | Other and Eliminations |  |  |  |  |  |  |  |  |
Segment disclosure [Abstract] |  |  |  |  |  |  |  |  |
Revenues | $ (625) |  |  | $ (429) |  |  | $ (1,731) | $ (1,126) |

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