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SEGMENTS - Reconciliations for Segments (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Dec. 31, 2022
Segment Reporting Information [Line Items]          
Total revenues (Note L) $ 4,189 $ 5,914 $ 12,442 $ 17,355  
Cost of sales and fuel (exclusive of depreciation and operating costs) (2,799) (4,773) (8,628) (14,017)  
Operating costs (352) (286) (981) (827)  
Depreciation and amortization (177) (157) (509) (469)  
Equity in net earnings from investments 49 39 132 111  
Investments in unconsolidated affiliates 1,795 804 1,795 804 $ 802
Total assets 43,939 24,439 43,939 24,439 $ 24,379
Capital expenditures 398 327 992 886  
Operating segments          
Segment Reporting Information [Line Items]          
Total revenues (Note L) 4,817 6,927 14,236 20,467  
Cost of sales and fuel (exclusive of depreciation and operating costs) (3,426) (5,782) (10,423) (17,119)  
Operating costs (351) (286) (978) (831)  
Depreciation and amortization (176) (157) (506) (466)  
Equity in net earnings from investments 49 39 132 111  
Investments in unconsolidated affiliates 1,794 804 1,794 804  
Total assets 43,582 24,271 43,582 24,271  
Capital expenditures 386 313 959 848  
Other and eliminations          
Segment Reporting Information [Line Items]          
Total revenues (Note L) (628) (1,013) (1,794) (3,112)  
Cost of sales and fuel (exclusive of depreciation and operating costs) 627 1,009 1,795 3,102  
Operating costs (1) 0 (3) 4  
Depreciation and amortization (1) 0 (3) (3)  
Equity in net earnings from investments 0 0 0 0  
Investments in unconsolidated affiliates 1 0 1 0  
Total assets 357 168 357 168  
Capital expenditures 12 14 33 38  
Noncustomer [Member]          
Segment Reporting Information [Line Items]          
Total revenues (Note L) 18 (57) 160 (364)  
NGL and condensate sales          
Segment Reporting Information [Line Items]          
Total revenues (Note L) 3,449 4,734 10,159 14,246  
NGL and condensate sales | Operating segments          
Segment Reporting Information [Line Items]          
Total revenues (Note L) 4,073 5,740 11,938 17,342  
NGL and condensate sales | Other and eliminations          
Segment Reporting Information [Line Items]          
Total revenues (Note L) (624) (1,006) (1,779) (3,096)  
Residue natural gas sales          
Segment Reporting Information [Line Items]          
Total revenues (Note L) 282 827 1,094 2,065  
Residue natural gas sales | Operating segments          
Segment Reporting Information [Line Items]          
Total revenues (Note L) 282 827 1,094 2,065  
Residue natural gas sales | Other and eliminations          
Segment Reporting Information [Line Items]          
Total revenues (Note L) 0 0 0 0  
Gathering, processing and exchange service revenue          
Segment Reporting Information [Line Items]          
Total revenues (Note L) 186 175 523 519  
Gathering, processing and exchange service revenue | Operating segments          
Segment Reporting Information [Line Items]          
Total revenues (Note L) 186 175 523 519  
Gathering, processing and exchange service revenue | Other and eliminations          
Segment Reporting Information [Line Items]          
Total revenues (Note L) 0 0 0 0  
Transportation and storage revenue          
Segment Reporting Information [Line Items]          
Total revenues (Note L) 188 172 570 508  
Transportation and storage revenue | Operating segments          
Segment Reporting Information [Line Items]          
Total revenues (Note L) 191 174 577 514  
Transportation and storage revenue | Other and eliminations          
Segment Reporting Information [Line Items]          
Total revenues (Note L) (3) (2) (7) (6)  
Other          
Segment Reporting Information [Line Items]          
Total revenues (Note L) 84 6 96 17  
Other | Operating segments          
Segment Reporting Information [Line Items]          
Total revenues (Note L) 85 11 104 27  
Other | Other and eliminations          
Segment Reporting Information [Line Items]          
Total revenues (Note L) $ (1) $ (5) $ (8) $ (10)