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Stock-Based Compensation (Details) - USD ($) shares in Millions, $ in Millions | Jan. 30, 2026 | Mar. 31, 2026
--- | --- | ---
2025 SM Equity Incentive Compensation Plan |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |
Shares available for grant (in shares) |  | 3.0
2024 Civitas Long Term Incentive Plan |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |
Shares available for grant (in shares) |  | 3.7
Restricted Stock Units (RSUs) | Civitas Resources Merger |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |
Shares issued in conversion | 2.5 |
Aggregate fair value | $ 49 |
Unrecognized stock-based compensation | $ 20 |

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