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Summary of Significant Accounting Policies (Narrative) (Details) - USD ($) shares in Millions, $ in Millions | Aug. 01, 2025 | Sep. 27, 2024
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CDM [Member] |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Acquisition of all the Outstanding Noncontrolling Interests in CDM | $ 260 |
Gain (Loss) on Investments | $ 17 |
CDM [Member] | Ownership in Cotton Draw Midstream [Member] |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Business Aquisition Ownership Percentage | 100.00% |
Williston Acquisition [Member] |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Business Combination, Contingent Consideration, Asset, Total |  | $ 5,000
Cash paid related to acquisition |  | $ 3,500
Common Stock [Member] | Williston Acquisition [Member] |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Number of shares sold in acquisition |  | 37.3

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