v3.25.4
Supplemental Information on Oil and Gas Producing Activities (Unaudited) - Discounted future cash flows (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Oil and gas reserves        
Future cash inflows computation period 12 months      
Discount rate for annual net cash inflows (as a percent) 10.00% 10.00% 10.00%  
Annual net cash inflows        
Period of unweighted first day of the month average prices used to compute future cash inflows 12 months      
Future cash inflows $ 71,879 $ 52,995 $ 58,061  
Future production costs (46,541) (41,583) (41,887)  
Future development costs (2,560) (2,028) (2,027)  
Future net cash flows before income tax 22,778 9,384 14,147  
Future income tax expense (4,017) (1,036) (2,178)  
Future net cash flows 18,761 8,348 11,969  
10% annual discount for estimated timing of cash flows (10,651) (4,853) (6,874)  
Standardized measure of discounted future net cash flows 8,110 3,495 5,095 $ 23,564
VIE, Martica        
Annual net cash inflows        
Standardized measure of discounted future net cash flows $ 72 $ 101 $ 170