Supplemental Oil and Gas Disclosures (Unaudited) (Summary of Changes in Reserves - United States) (Details) bbl in Thousands, Mcf in Millions	12 Months Ended
	Dec. 31, 2023 Mcfe bbl Mcf	Dec. 31, 2022 Mcfe bbl Mcf	Dec. 31, 2021 Mcfe bbl Mcf
Proved Developed and Undeveloped Reserve (Energy) [Roll Forward]
Proved reserves, beginning of period, (bcfe) | Mcfe	21,625,000,000	21,148,000,000	11,990,000,000
Revisions of previous estimates due to price (1) | Mcfe	(1,847,000,000)	55,000,000	415,000,000
Extensions, discoveries and other additions (2) | Mcfe	2,026,000,000	2,428,000,000	1,961,000,000
Production | Mcfe	(1,669,000,000)	(1,733,000,000)	(1,240,000,000)
Acquisition of reserves in place (3) | Mcfe	0	0	5,753,000,000
Disposition of reserves in place | Mcfe	(350,000,000)	(43,000,000)	(1,000,000)
Proved reserves, end of period, (bcfe) | Mcfe	19,660,000,000	21,625,000,000	21,148,000,000
Proved undeveloped reserves:
Proved undeveloped reverses (energy) | Mcfe	2,548,000,000	0
Natural Gas
Proved Developed and Undeveloped Reserve (Energy) [Roll Forward]
Proved developed reserves, reclassified to performance and production revisions | Mcf	34		158
Proved undeveloped reserves, reclassified to performance and production revisions | Mcf			997
Oil
Proved Developed and Undeveloped Reserve (Energy) [Roll Forward]
Proved developed reserves, reclassified to performance and production revisions			2
Proved undeveloped reserves, reclassified to performance and production revisions			13
NGL
Proved Developed and Undeveloped Reserve (Energy) [Roll Forward]
Proved developed reserves, reclassified to performance and production revisions			14
Proved undeveloped reserves, reclassified to performance and production revisions			112
United States
Proved Developed and Undeveloped Reserves [Roll Forward]
Acquisition of reserves in place (3) | Mcf			5,750
Proved Developed and Undeveloped Reserve (Energy) [Roll Forward]
Proved reserves, beginning of period, (bcfe) | Mcfe	21,625,000,000	21,148,000,000	11,990,000,000
Revisions of previous estimates due to price (1) | Mcfe	(1,847,000,000)	55,000,000	415,000,000
Revisions of previous estimates other than price (4) | Mcfe	(125,000,000)	(230,000,000)	2,270,000,000
Extensions, discoveries and other additions (2) | Mcfe	2,026,000,000	2,428,000,000	1,961,000,000
Production | Mcfe	(1,669,000,000)	(1,733,000,000)	(1,240,000,000)
Acquisition of reserves in place (3) | Mcfe			5,753,000,000
Disposition of reserves in place | Mcfe	(350,000,000)	(43,000,000)	(1,000,000)
Proved reserves, end of period, (bcfe) | Mcfe	19,660,000,000	21,625,000,000	21,148,000,000
Proved developed reserves as of:
Proved developed reserves (energy) | Mcfe	11,605,000,000	12,145,000,000	11,335,000,000
Proved undeveloped reserves:
Proved undeveloped reverses (energy) | Mcfe	8,055,000,000	9,480,000,000	9,813,000,000
United States | Natural Gas
Proved Developed and Undeveloped Reserves [Roll Forward]
Proved reserves, beginning of year | Mcf	17,362	17,207	9,181
Revisions of previous estimates due to price (1) | Mcf	(1,779)	61	501
Revisions of previous estimates other than price (4) | Mcf	(417)	(458)	1,402
Extensions, discoveries and other additions (2) | Mcf	1,813	2,106	1,389
Production | Mcf	(1,438)	(1,520)	(1,015)
Disposition of reserves in place | Mcf	(350)	(34)	(1)
Proved reserves, end of year | Mcf	15,191	17,362	17,207
Proved developed reserves as of:
Proved developed reserves (volume) | Mcf	9,196	9,793	9,308
Proved undeveloped reserves:
Proved undeveloped reserves (volume) | Mcf	5,995	7,569	7,899
United States | Oil
Proved Developed and Undeveloped Reserves [Roll Forward]
Proved reserves, beginning of year	83,386	79,779	58,024
Revisions of previous estimates due to price (1)	(1,118)	(107)	1,414
Revisions of previous estimates other than price (4)	(3,630)	(2,149)	17,384
Extensions, discoveries and other additions (2)	5,062	10,877	9,381
Production	(5,602)	(4,993)	(6,610)
Acquisition of reserves in place (3)			247
Disposition of reserves in place	0	(21)	(61)
Proved reserves, end of year	78,098	83,386	79,779
Proved developed reserves as of:
Proved developed reserves (volume)	38,581	41,138	40,930
Proved undeveloped reserves:
Proved undeveloped reserves (volume)	39,517	42,248	38,849
United States | NGL
Proved Developed and Undeveloped Reserves [Roll Forward]
Proved reserves, beginning of year	627,136	576,964	410,151
Revisions of previous estimates due to price (1)	(10,217)	(828)	(15,525)
Revisions of previous estimates other than price (4)	52,283	40,138	127,197
Extensions, discoveries and other additions (2)	30,444	42,719	85,901
Production	(32,859)	(30,446)	(30,940)
Acquisition of reserves in place (3)			180
Disposition of reserves in place	0	(1,411)	0
Proved reserves, end of year	666,787	627,136	576,964
Proved developed reserves as of:
Proved developed reserves (volume)	362,983	350,821	296,832
Proved undeveloped reserves:
Proved undeveloped reserves (volume)	303,804	276,315	280,132