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Estimates (Schedule Of Goodwill) (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 | Sep. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Dec. 31, 2021 | Dec. 31, 2020
Goodwill [Roll Forward] |  |  |  |  |  |  |
Goodwill |  |  | $ 5,167 |  |  | $ 2,391 | $ 5,167
Goodwill |  |  |  |  |  | 142 | 9
Goodwill | $ 2,391 |  |  | $ 5,167 |  | 2,533 | 2,391
Goodwill impairment |  |  |  | (9) | $ (12) |  | (2,815)
Goodwill, Other Changes |  |  |  |  |  |  | 30
Intrastate Transportation and Storage |  |  |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |  |  |
Goodwill |  |  | 10 |  |  | 0 | 10
Goodwill |  |  |  |  |  | 0 | 0
Goodwill | 0 |  |  | 10 |  | 0 | 0
Goodwill impairment | (10) |  |  |  |  |  | (10)
Goodwill, Other Changes |  |  |  |  |  |  | 0
Interstate Transportation and Storage |  |  |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |  |  |
Goodwill |  |  | 226 |  |  | 0 | 226
Goodwill |  |  |  |  |  | 0 | 0
Goodwill | 0 |  |  | 226 |  | 0 | 0
Goodwill impairment |  | $ (43) | (183) |  |  |  | (226)
Goodwill, Other Changes |  |  |  |  |  |  | 0
Midstream |  |  |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |  |  |
Goodwill |  |  | 483 |  |  | 0 | 483
Goodwill |  |  |  |  |  | 0 | 0
Goodwill | 0 |  |  | 483 |  | 0 | 0
Goodwill impairment |  |  | (483) |  |  |  | (483)
Goodwill, Other Changes |  |  |  |  |  |  | 0
NGL and Refined Products Transportation and Services |  |  |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |  |  |
Goodwill |  |  | 693 |  |  | 693 | 693
Goodwill |  |  |  |  |  | 0 | 0
Goodwill | 693 |  |  | 693 |  | 693 | 693
Goodwill impairment |  |  |  |  |  |  | 0
Goodwill, Other Changes |  |  |  |  |  |  | 0
Crude Oil Transportation and Services |  |  |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |  |  |
Goodwill |  |  | 1,397 |  |  | 52 | 1,397
Goodwill |  |  |  |  |  | 138 | 0
Goodwill | 52 |  |  | 1,397 |  | 190 | 52
Goodwill impairment |  | (1,280) |  |  |  |  | (1,279)
Goodwill, Other Changes |  |  |  |  |  |  | (66)
Investment in Sunoco LP |  |  |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |  |  |
Goodwill |  |  | 1,555 |  |  | 1,564 | 1,555
Goodwill |  |  |  |  |  | 4 | 9
Goodwill | 1,564 |  |  | 1,555 |  | 1,568 | 1,564
Goodwill impairment |  |  |  |  |  |  | 0
Goodwill, Other Changes |  |  |  |  |  |  | 0
Investment in USAC |  |  |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |  |  |
Goodwill |  |  | 619 |  |  | 0 | 619
Goodwill |  |  |  |  |  | 0 | 0
Goodwill | 0 |  |  | 619 |  | 0 | 0
Goodwill impairment |  |  | (619) |  |  |  | (619)
Goodwill, Other Changes |  |  |  |  |  |  | 0
All Other |  |  |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |  |  |
Goodwill |  |  | 184 |  |  | 82 | 184
Goodwill |  |  |  |  |  | 0 | 0
Goodwill | 82 |  |  | $ 184 |  | $ 82 | 82
Goodwill impairment | $ (15) | $ (132) | $ (40) |  |  |  | (198)
Goodwill, Other Changes |  |  |  |  |  |  | $ 96

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