XML 121 R101.htm IDEA: XBRL DOCUMENT v3.25.0.1
Supplemental Information on Natural Gas and Oil Exploration, Development and Production Activities (Unaudited) - Changes in Proved Undeveloped Reserves (Detail)
 12 Months Ended
Dec. 31, 2024
MMcfe
Extractive Industries [Abstract]  
Beginning proved undeveloped reserves at December 31, 2023 6,577,273
Undeveloped reserves transferred to developed (998,927)
Revisions (116,052) [1]
Extension and discoveries 738,388
Ending proved undeveloped reserves at December 31, 2024 6,200,682
[1]

(a)

Includes 457.2 Bcfe positive revision for previously proved undeveloped properties due to their addition back into our five year development plan along with 183.2 Bcfe of positive revisions due to improved recovery associated with extended lateral lengths and 15.0 Bcfe of revisions due to increased ethane recoveries. These are offset by 771.5 Bcfe of proved undeveloped reserves removed and deferred due to the five-year rule which can be included in our future proved reserves as these locations are added back to our five-year development plan.