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Acquisitions, Divestitures and Other Transactions - Divestitures (Details) - USD ($) $ in Millions | 1 Months Ended | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Aug. 31, 2021 | Feb. 29, 2020 | Jun. 30, 2021 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Jul. 31, 2021
Divestitures |  |  |  |  |  |  |
Proceeds from sales of assets |  |  |  | $ 881 | $ 429 | $ 77 |
Deferred losses on hedges remaining in other comprehensive income |  |  |  | (9,972) | (9,593) |  |
Proceeds from sale, including proceeds attributable to agreements entered into in conjunction with sale of productive assets |  |  |  |  | 451 |  |
Gains/(losses) on asset sales and asset impairments, net |  |  |  | $ (592) | (719) | (28) |
Crude Oil | Natural Gas, Storage |  |  |  |  |  |  |
Divestitures |  |  |  |  |  |  |
Proceeds from sales of assets | $ 850 |  |  |  |  |  |
(Gains)/losses on asset sales and asset impairments, net |  |  |  |  |  |  |
Divestitures |  |  |  |  |  |  |
Gains/(losses) on asset sales and asset impairments, net |  |  |  |  | 178 |  |
Pine Prairie and Southern Pines Natural Gas Storage Facilities | Held for sale |  |  |  |  |  |  |
Divestitures |  |  |  |  |  |  |
Assets held for sale, current |  |  |  |  |  |  | $ 832
Pine Prairie and Southern Pines Natural Gas Storage Facilities | Disposed of by sale | (Gains)/losses on asset sales and asset impairments, net |  |  |  |  |  |  |
Divestitures |  |  |  |  |  |  |
Non-cash impairment losses upon classification to assets held for sale |  |  | $ 475 |  |  |  |
Los Angeles Basin Crude Oil Terminals | Disposed of by sale | Crude Oil |  |  |  |  |  |  |
Divestitures |  |  |  |  |  |  |
Proceeds from sales of assets |  |  |  |  | 200 |  |
NGL Terminals | Disposed of by sale |  |  |  |  |  |  |
Divestitures |  |  |  |  |  |  |
Proceeds attributable to multi-year supply agreement entered into in conjunction with sale of assets |  |  |  |  | 22 |  |
NGL Terminals | Disposed of by sale | NGL |  |  |  |  |  |  |
Divestitures |  |  |  |  |  |  |
Proceeds from sale, including proceeds attributable to agreements entered into in conjunction with sale of productive assets |  |  |  |  | $ 163 |  |
North Dakota Storage Terminals | Disposed of by sale | Crude Oil |  |  |  |  |  |  |
Divestitures |  |  |  |  |  |  |
Proceeds from sales of assets |  |  |  |  |  | 77 |
North Dakota Storage Terminals | Disposed of by sale | (Gains)/losses on asset sales and asset impairments, net |  |  |  |  |  |  |
Divestitures |  |  |  |  |  |  |
Recognized gains/(losses) related to sale of assets, net |  |  |  |  |  | 16 |
Recognized gains related to sale of assets |  |  |  |  |  | 31 |
Recognized losses related to sale of assets |  |  |  |  |  | $ 47 |
Saddlehorn Pipeline Company, LLC |  |  |  |  |  |  |
Divestitures |  |  |  |  |  |  |
Ownership percentage sold |  | 10.00% |  |  | 10.00% |  |
Proceeds from sale of interest in unconsolidated entity |  | $ 78 |  |  | $ 78 |  |
Derivative Instruments | Pine Prairie and Southern Pines Natural Gas Storage Facilities | Held for sale |  |  |  |  |  |  |
Divestitures |  |  |  |  |  |  |
Deferred losses on hedges remaining in other comprehensive income |  |  |  |  |  |  | $ 18

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