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Summary Of Significant Accounting Policies (Narrative) (Details) $ in Millions |  | 12 Months Ended
--- | --- | ---
Jan. 07, 2021 | Dec. 31, 2022 USD ($) a Customer | Dec. 31, 2021 USD ($) Customer | Dec. 31, 2020 USD ($) Customer
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Conversion of common stock into right to received per share | 0.5165 |  |  |
Number of customers | Customer |  | 1 | 2 | 2
Derivative collateral held |  | $ 0 |  |
Cash collateral posted |  | 0 |  |
Restricted cash |  | 140 | $ 172 | $ 190
Goodwill, Impairment Loss |  | 0 | 0 | $ 0
Barnett Shale [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Restricted cash |  | $ 120 | $ 160 |
Minimum [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Other property and equipment, useful life |  |  | 3 years |
Maximum [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Other property and equipment, useful life |  | 60 years |  |
Customer Concentration Risk [Member] | One Customer [Member] | Consolidated Sales Revenue [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Concentration risk percentage |  | 15.00% | 19.00% | 13.00%
Customer Concentration Risk [Member] | Two Customer [Member] | Consolidated Sales Revenue [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Concentration risk percentage |  |  | 12.00% | 10.00%
Upstream Revenues [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Number of days allowed for payment from end of production month |  | 30 days |  |
Marketing Revenues [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Number of days allowed for payment of invoiced amount |  | 30 days |  |
CDM [Member] | QL Capital Partners, LP [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Cash distribution from entities |  | $ 30 | $ 20 | $ 14
Cash contributed to entities |  |  | $ 3 | $ 21
Devon and WPX Agreement [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Date of agreement | Jan. 07, 2021 | Jan. 07, 2021 |  |
Conversion of common stock into right to received per share | 0.5165 |  |  |
WPX and Howard Energy Partners [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Voting interest in the join venture legal entity |  | 50.00% |  |
Catalyst [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Area of land | a |  | 50,000 |  |
Investment in Catalyst |  | $ 339 |  |
Net assets |  | $ 120 |  |

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