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Fair Value Measurements (Tables) | 3 Months Ended
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Mar. 31, 2026
Fair Value Disclosures [Abstract] |
Schedule of Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis | The following table is a listing of the Company’s assets and liabilities that are measured at fair value on a recurring basis in the accompanying balance sheets and where they are classified within the fair value hierarchy:
| As of March 31, 2026 |  | As of December 31, 2025
| Level 1 |  | Level 2 |  | Level 3 |  | Level 1 |  | Level 2 |  | Level 3
| (in millions)
Assets: |  |  |  |  |  |  |  |  |  |  |
Derivatives | $ | — |  |  | $ | 228 |  |  | $ | — |  |  | $ | — |  |  | $ | 89 |  |  | $ | — |
Liabilities: |  |  |  |  |  |  |  |  |  |  |
Derivatives | $ | — |  |  | $ | 705 |  |  | $ | — |  |  | $ | — |  |  | $ | 4 |  |  | $ | — |
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments | Long-Term Debt The following table reflects the fair value of the Company’s Senior Notes obligations measured using Level 1 inputs based on quoted secondary market trading prices. The Senior Notes were not presented at fair value in the accompanying balance sheets as of March 31, 2026, or December 31, 2025, as the Senior Notes were recorded at carrying value, net of any unamortized premium or unamortized deferred financing costs. Refer to Note 6 - Long-Term Debt for additional information.
| As of March 31, 2026 |  | As of December 31, 2025
| Principal Amount |  | Fair Value |  | Principal Amount |  | Fair Value
| (in millions)
6.75% Senior Notes due 2026 (1) | $ | 419 |  |  | $ | 420 |  |  | $ | 419 |  |  | $ | 420 |
5.0% Senior Notes due 2026 (1)(2) | $ | 400 |  |  | $ | 399 |  |  | $ | — |  |  | $ | — |
6.625% Senior Notes due 2027 | $ | 417 |  |  | $ | 417 |  |  | $ | 417 |  |  | $ | 419 |
8.375% Senior Notes due 2028 (2) | $ | 566 |  |  | $ | 583 |  |  | $ | — |  |  | $ | — |
6.5% Senior Notes due 2028 | $ | 400 |  |  | $ | 401 |  |  | $ | 400 |  |  | $ | 405 |
6.75% Senior Notes due 2029 | $ | 750 |  |  | $ | 764 |  |  | $ | 750 |  |  | $ | 756 |
8.625% Senior Notes due 2030 (2) | $ | 1,000 |  |  | $ | 1,054 |  |  | $ | — |  |  | $ | — |
8.75% Senior Notes due 2031 (2) | $ | 1,350 |  |  | $ | 1,417 |  |  | $ | — |  |  | $ | — |
7.0% Senior Notes due 2032 | $ | 750 |  |  | $ | 766 |  |  | $ | 750 |  |  | $ | 739 |
9.625% Senior Notes due 2033 (2) | $ | 750 |  |  | $ | 830 |  |  | $ | — |  |  | $ | — |
6.625% Senior Notes due 2034 | $ | 1,000 |  |  | $ | 1,002 |  |  | $ | — |  |  | $ | — |
____________________________________________ (1) As of March 31, 2026, the 2026 Senior Notes, the Civitas 2026 Senior Notes, and the 2027 Senior Notes are presented in the current liabilities section of the accompanying balance sheets. (2) Civitas Senior Notes assumed as part of the Civitas Merger.

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- Definition Tabular disclosure of financial instrument measured at fair value on recurring or nonrecurring basis. Includes, but is not limited to, instrument classified in shareholders' equity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 100 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-100 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 + Details
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- Definition Tabular disclosure of information pertaining to carrying amount and estimated fair value of short-term and long-term debt instruments or arrangements, including but not limited to, identification of terms, features, and collateral requirements. + References No definition available. + Details
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