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Summary of Significant Accounting Policies (Narrative) (Details) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 USD ($) a | Sep. 30, 2022 USD ($) | Sep. 30, 2023 USD ($) a | Sep. 30, 2022 USD ($)
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Restricted cash | $ 107 | $ 144 | $ 107 | $ 144
Gain loss on disposition of assets | $ 0 | $ 0 | $ 41 | $ 15
Devon Energy Corporation [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Voting interest in the joint venture legal entity | 30.00% |  | 30.00% |
Devon Energy Corporation [Member] | Waterbridge |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Voting interest in the joint venture legal entity | 70.00% |  | 70.00% |
Water JV [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Gain loss on disposition of assets |  |  | $ 64 |
WPX and Howard Energy Partners [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Voting interest in the joint venture legal entity | 50.00% |  | 50.00% |
Catalyst [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Area of land | a | 50,000 |  | 50,000 |

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