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Acquisitions, Divestitures and Other Transactions - Asset Exchange (Details) $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2021 USD ($) plant | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
Business Acquisition [Line Items] |  |  |  |
Gain on divestiture of assets |  | $ (592) | $ (719) | $ (28)
(Gains)/losses on asset sales and asset impairments, net |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Gain on divestiture of assets |  |  | $ 178 |
Inter Pipeline Ltd | Asset Exchange Transaction | (Gains)/losses on asset sales and asset impairments, net |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Gain on divestiture of assets | $ 106 |  |  |
Additional Interests in Straddle Plants | Inter Pipeline Ltd | Asset Exchange Transaction |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Cash consideration, including working capital and other adjustments | $ 32 |  |  |
Additional Interests in Straddle Plants | Inter Pipeline Ltd | NGL | Asset Exchange Transaction |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Number of straddle plants, additional interests acquired | plant | 2 |  |  |

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