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SEGMENTS (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2020 | Mar. 31, 2019 | Dec. 31, 2019
Segment disclosure [Abstract] |  |  |
Revenues | $ 2,136,672 | $ 2,779,958 |
Cost of sales and fuel (exclusive of depreciation and operating costs) | (1,276,928) | (1,956,377) |
Operating costs | (207,040) | (240,741) |
Equity in net earnings (loss) from investments | 44,627 | 43,481 |
Depreciation and amortization | (132,353) | (114,158) |
Impairment charges | (641,754) | 0 |
Investments in unconsolidated affiliates | 810,479 | 950,924 | $ 861,844
Total assets | 21,969,440 | 18,934,325 | $ 21,812,121
Capital expenditures | 949,679 | 889,705 |
Net income (loss) | (141,857) | 337,208 |
Interest expense, net of capitalized interest | 140,616 | 115,420 |
Income tax expense (benefit) | (55,395) | 77,934 |
Noncash compensation expense | (1,302) | 5,540 |
Other corporate costs and noncash items | (33,081) | (13,729) |
Gain (loss) on extinguishment of debt | 15,800 |  |
Natural Gas Gathering And Processing [Member] |  |  |
Segment disclosure [Abstract] |  |  |
Revenues | 449,980 | 694,661 |
Cost of sales and fuel (exclusive of depreciation and operating costs) | (202,170) | (450,913) |
Operating costs | (84,470) | (94,247) |
Equity in net earnings (loss) from investments | 806 | (1,202) |
Noncash compensation expense and other | (4,498) | 3,945 |
Segment adjusted EBITDA | 159,648 | 152,244 |
Depreciation and amortization | (58,756) | (52,681) |
Impairment charges | (564,353) |  |
Investments in unconsolidated affiliates | 4,276 | 39,749 |
Total assets | 6,374,552 | 6,208,883 |
Capital expenditures | 181,610 | 215,148 |
Natural Gas Gathering And Processing [Member] | Natural Gas Gathering and Processing Intersegment [Member] |  |  |
Segment disclosure [Abstract] |  |  |
Revenues | 213,300 | 335,800 |
Natural Gas Liquids |  |  |
Segment disclosure [Abstract] |  |  |
Revenues | 1,770,592 | 2,311,500 |
Cost of sales and fuel (exclusive of depreciation and operating costs) | (1,278,754) | (1,846,673) |
Operating costs | (89,571) | (110,438) |
Equity in net earnings (loss) from investments | 15,268 | 17,544 |
Noncash compensation expense and other | (6,619) | 5,706 |
Segment adjusted EBITDA | 410,916 | 377,639 |
Depreciation and amortization | (57,841) | (46,401) |
Impairment charges | (77,401) |  |
Investments in unconsolidated affiliates | 435,024 | 447,272 |
Total assets | 12,682,807 | 10,220,412 |
Capital expenditures | 746,183 | 639,338 |
Natural Gas Liquids | Natural Gas Liquids Regulated [Member] |  |  |
Segment disclosure [Abstract] |  |  |
Revenues | 435,100 | 323,100 |
Cost of sales and fuel (exclusive of depreciation and operating costs) | (120,400) | (118,500) |
Natural Gas Pipelines |  |  |
Segment disclosure [Abstract] |  |  |
Revenues | 120,783 | 116,400 |
Cost of sales and fuel (exclusive of depreciation and operating costs) | (1,539) | (1,755) |
Operating costs | (33,307) | (36,268) |
Equity in net earnings (loss) from investments | 28,553 | 27,139 |
Noncash compensation expense and other | (1,966) | 1,132 |
Segment adjusted EBITDA | 112,524 | 106,648 |
Depreciation and amortization | (14,769) | (14,156) |
Impairment charges | 0 |  |
Investments in unconsolidated affiliates | 371,179 | 463,903 |
Total assets | 2,089,362 | 2,138,759 |
Capital expenditures | 16,590 | 28,688 |
Natural Gas Pipelines | Natural Gas Pipelines Regulated [Member] |  |  |
Segment disclosure [Abstract] |  |  |
Revenues | 73,900 | 70,100 |
Cost of sales and fuel (exclusive of depreciation and operating costs) | (6,100) | (5,600) |
Total Segments [Member] |  |  |
Segment disclosure [Abstract] |  |  |
Revenues | 2,341,355 | 3,122,561 |
Cost of sales and fuel (exclusive of depreciation and operating costs) | (1,482,463) | (2,299,341) |
Operating costs | (207,348) | (240,953) |
Equity in net earnings (loss) from investments | 44,627 | 43,481 |
Noncash compensation expense and other | (13,083) | 10,783 |
Segment adjusted EBITDA | 683,088 | 636,531 |
Depreciation and amortization | (131,366) | (113,238) |
Impairment charges | (641,754) |  |
Investments in unconsolidated affiliates | 810,479 | 950,924 |
Total assets | 21,146,721 | 18,568,054 |
Capital expenditures | 944,383 | 883,174 |
Other and Eliminations |  |  |
Segment disclosure [Abstract] |  |  |
Revenues | (204,683) | (342,603) |
Cost of sales and fuel (exclusive of depreciation and operating costs) | 205,535 | 342,964 |
Operating costs | 308 | 212 |
Equity in net earnings (loss) from investments | 0 | 0 |
Depreciation and amortization | (987) | (920) |
Impairment charges | 0 |  |
Investments in unconsolidated affiliates | 0 | 0 |
Total assets | 822,719 | 366,271 |
Capital expenditures | 5,296 | 6,531 |
Operating Segments [Member] | Natural Gas Liquids | Natural Gas Liquids Regulated [Member] |  |  |
Segment disclosure [Abstract] |  |  |
Revenues | 378,200 | 270,000 |
Noncustomer [Domain] |  |  |
Segment disclosure [Abstract] |  |  |
Revenues | 80,200 | 22,300 |
NGL and Condensate Sales [Member] |  |  |
Segment disclosure [Abstract] |  |  |
Revenues | 1,617,156 | 2,152,084 |
NGL and Condensate Sales [Member] | Natural Gas Gathering And Processing [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 219,917 | 332,332 |
NGL and Condensate Sales [Member] | Natural Gas Liquids |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 1,596,711 | 2,158,103 |
NGL and Condensate Sales [Member] | Natural Gas Pipelines |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 0 | 0 |
NGL and Condensate Sales [Member] | Total Segments [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 1,816,628 | 2,490,435 |
NGL and Condensate Sales [Member] | Other and Eliminations |  |  |
Segment disclosure [Abstract] |  |  |
Revenues | (199,472) | (338,351) |
Residue Natural Gas Sales [Member] |  |  |
Segment disclosure [Abstract] |  |  |
Revenues | 190,054 | 320,006 |
Residue Natural Gas Sales [Member] | Natural Gas Gathering And Processing [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 189,051 | 319,036 |
Residue Natural Gas Sales [Member] | Natural Gas Liquids |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 0 | 0 |
Residue Natural Gas Sales [Member] | Natural Gas Pipelines |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 2,035 | 970 |
Residue Natural Gas Sales [Member] | Total Segments [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 191,086 | 320,006 |
Residue Natural Gas Sales [Member] | Other and Eliminations |  |  |
Segment disclosure [Abstract] |  |  |
Revenues | (1,032) | 0 |
Gathering, Processing and Exchange Services Revenue |  |  |
Segment disclosure [Abstract] |  |  |
Revenues | 158,473 | 138,276 |
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 | 37,937 | 39,742 |
Gathering, Processing and Exchange Services Revenue | Natural Gas Liquids |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 120,536 | 98,534 |
Gathering, Processing and Exchange Services Revenue | Natural Gas Pipelines |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 0 | 0 |
Gathering, Processing and Exchange Services Revenue | Total Segments [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 158,473 | 138,276 |
Gathering, Processing and Exchange Services Revenue | Other and Eliminations |  |  |
Segment disclosure [Abstract] |  |  |
Revenues | 0 | 0 |
Transportation and Storage Revenue [Member] |  |  |
Segment disclosure [Abstract] |  |  |
Revenues | 165,310 | 161,250 |
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 |
Transportation and Storage Revenue [Member] | Natural Gas Liquids |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 50,755 | 52,322 |
Transportation and Storage Revenue [Member] | Natural Gas Pipelines |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 118,364 | 112,865 |
Transportation and Storage Revenue [Member] | Total Segments [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 169,119 | 165,187 |
Transportation and Storage Revenue [Member] | Other and Eliminations |  |  |
Segment disclosure [Abstract] |  |  |
Revenues | (3,809) | (3,937) |
Other [Member] |  |  |
Segment disclosure [Abstract] |  |  |
Revenues | 5,679 | 8,342 |
Other [Member] | Natural Gas Gathering And Processing [Member] |  |  |
Segment disclosure [Abstract] |  |  |
Revenues | 3,075 | 3,551 |
Other [Member] | Natural Gas Liquids |  |  |
Segment disclosure [Abstract] |  |  |
Revenues | 2,590 | 2,541 |
Other [Member] | Natural Gas Pipelines |  |  |
Segment disclosure [Abstract] |  |  |
Revenues | 384 | 2,565 |
Other [Member] | Total Segments [Member] |  |  |
Segment disclosure [Abstract] |  |  |
Revenues | 6,049 | 8,657 |
Other [Member] | Other and Eliminations |  |  |
Segment disclosure [Abstract] |  |  |
Revenues | $ (370) | $ (315) |

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