Supplemental Information on Natural Gas and Oil Exploration, Development and Production Activities (Unaudited) - Additional Information (Detail) $ in Millions		12 Months Ended
		Dec. 31, 2022 USD ($) MMcfe Bcfe $ / Mcf $ / MMBTU $ / bbl MMBbls MMcf	Dec. 31, 2021 MMcfe $ / MMBTU $ / Mcf $ / bbl MMBbls MMcf	Dec. 31, 2020 MMcfe $ / bbl $ / MMBTU $ / Mcf MMcf MMBbls	Dec. 31, 2019 MMcfe MMBbls MMcf
Reserve Quantities [Line Items]
Percentage of proved resources reviewed by consultants		96.00%
Proved reserve and pretax present value of reserve discounted		10.00%
Variance in reserve estimates		less than 5%.
Scheduled to be drilling period maximum for undeveloped reserves		scheduled to be drilled within five years
Reserve additions attributable to natural gas		77.00%	72.00%	80.00%
Proved undeveloped reserves dropped		1,400	1,300	961,100
Revision of negative pricing				67,900
Revisions of positive pricing			22,600
Cost spent on undeveloped reserves transferred to developed reserves | $		$ 430.0
Estimated future development costs over next five years | $		$ 3,000.0
Proved undeveloped reserves reported for more than five years | Bcfe		87,800
Crude Oil and NGL
Reserve Quantities [Line Items]
Benchmark price used for calculating average realized prices | $ / bbl		94.13	66.34	39.77
Crude Oil and Condensate
Reserve Quantities [Line Items]
Estimate reserve information average realized prices | $ / bbl		87.14	59.35	30.13
Proved developed and undeveloped reserves | MMBbls		42,656	52,596	57,626	74,532
NGLs
Reserve Quantities [Line Items]
Estimate reserve information average realized prices | $ / bbl		38.35	28.41	16.14
Proved developed and undeveloped reserves | MMBbls		1,003,958	1,001,305	951,466	938,236
Natural Gas
Reserve Quantities [Line Items]
Estimate reserve information average realized prices | $ / Mcf		6.08	3.30	1.68
Proved developed and undeveloped reserves | MMcf		11,797,972	11,452,081	11,148,560	12,114,977
Natural Gas, Per Thousand Cubic Feet
Reserve Quantities [Line Items]
Benchmark price used for calculating average realized prices | $ / MMBTU		6.36	3.60	1.98
Natural Gas Equivalents
Reserve Quantities [Line Items]
Proved reserves from drilling activities and evaluations of proved areas	[1]	1,668,244	1,602,769	1,264,282
Proved developed and undeveloped reserve balances	[1]	18,077,656	17,775,484	17,203,114	18,191,583
Revisions of previous estimates	[1]	(591,983)	(252,876)	(608,211)
Revision of positive performance		72,800	1,000.0	420,900
Additional undeveloped properties reclassified		716,200
Maximum
Reserve Quantities [Line Items]
Statement that reserve estimates differ from auditors		0.10

[1] Oil and NGLs volumes are converted to mcfe at the rate of one barrel equals six mcf based upon the approximate relative energy content of oil to natural gas, which is not indicative of the relationship between oil and natural gas prices.