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Advances to and Investments in Unconsolidated Affiliates Narrative (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Impairment of investment in unconsolidated affiliates |  | $ 0 | $ 129 | $ 0
Impairment losses |  | 21 | 2,880 | 74
Investments in unconsolidated affiliates |  | 2,947 | 3,060 | 3,460
Equity in earnings of unconsolidated affiliates |  | 246 | 119 | 302
FEP [Member] |  |  |  |
Impairment losses |  | 208 |  |
Investments in unconsolidated affiliates |  | 0 | 4 |
Equity in earnings of unconsolidated affiliates | [1] | 0 | (139) | 59
White Cliffs |  |  |  |
Impairment of investment in unconsolidated affiliates |  |  | 129 |
Investments in unconsolidated affiliates |  | 245 | 274 |
Equity in earnings of unconsolidated affiliates |  | $ 0 | $ 20 | $ 4
Citrus [Member] |  |  |  |
Interest ownership |  | 50.00% |  |
FGT [Member] |  |  |  |
Interest ownership |  | 100.00% |  |
FEP [Member] |  |  |  |
Interest ownership |  | 50.00% |  |
Midcontinent Express Pipeline, LLC [Member] |  |  |  |
Interest ownership |  | 50.00% |  |
White Cliffs |  |  |  |
Interest ownership |  | 51.00% |  |
[1] | For the year ended December 31, 2020, equity in earnings (losses) of unconsolidated affiliates includes the impact of non-cash impairments recorded by FEP, which reduced the Partnership’s equity in earnings by $208 million.

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