Supplementary Information On Natural Gas, Oil And NGL Reserves (Summary of Proved Undeveloped Reserves) (Details) - 12 months ended Sep. 30, 2020 |
Bcfe |
Mcfe |
---|---|---|
Extractive Industries [Abstract] | ||
Beginning proved undeveloped reserves | 17.0 | 17,018,905 |
Proved undeveloped reserves transferred to proved developed | (0.4) | (399,894) |
Revisions | (16,767,540) | |
Extensions and discoveries | 2,405,590 | |
Sales | (479,415) | |
Purchases | 1,283,010 | |
Ending proved undeveloped reserves | 3,060,656 |