Supplemental Information on Natural Gas and Oil Exploration, Development and Production Activities (Unaudited) - Standardized Measure of Discounted Future Net Cash Flows (Detail) - USD ($) $ in Thousands		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Extractive Industries [Abstract]
Future cash inflows		$ 113,954,835	$ 69,403,611
Future costs:
Production		(31,991,109)	(27,015,321)
Development	[1]	(3,313,724)	(2,469,028)
Future net cash flows before income taxes		78,650,002	39,919,262
Future income tax expense		(16,651,625)	(8,146,832)
Total future net cash flows before 10% discount		61,998,377	31,772,430
10% annual discount		(37,453,094)	(19,287,204)
Standardized measure of discounted future net cash flows		$ 24,545,283	$ 12,485,226	$ 2,846,322	$ 6,628,573

[1] 2022 includes $361.9 million of undiscounted future asset retirement costs as of December 31, 2022, using current estimates of future abandonment costs.