v3.26.1
Mergers, Acquisitions, and Divestitures - Narrative (Details)
$ in Millions
3 Months Ended 6 Months Ended
Apr. 30, 2026
a
Jan. 30, 2026
shares
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Business Combination [Line Items]            
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable, Entity Shares Issued Per Acquiree Share | shares   1.45        
Disposal Group [Line Items]            
Net proceeds from the sale of oil and gas properties         $ 897 $ 0
Gain on divestiture activity     $ 262 $ 0 262 0
Income (loss) before income taxes     1,389 253 979 485
South Texas Divestiture | Disposal Group, Disposed of by Sale, Not Discontinued Operations            
Disposal Group [Line Items]            
Disposal Group, Not Discontinued Operation, Net Acres Divested | a 61,000          
Net proceeds from the sale of oil and gas properties         896  
Income (loss) before income taxes     16 $ 25 61 $ 69
Civitas Resources Merger            
Business Combination [Line Items]            
Business Combination, Effective Date of Acquisition   Jan. 30, 2026        
Business Combination, Voting Equity Interest Acquired, Percentage   100.00%        
Shares of common stock issued (in shares) | shares   123,715,771        
Business Combination, Acquisition-Related Cost, Expense         17  
Business Combination, Acquiree's Revenue since Acquisition Date, Actual     $ 1,300   $ 2,000