Supplemental Oil and Gas Disclosures (Unaudited) (Summary of Changes in Reserves - United States) (Details) Mcf in Millions	12 Months Ended
	Dec. 31, 2022 Mcfe Mcf bbl	Dec. 31, 2021 Mcfe bbl Mcf Bcf	Dec. 31, 2020 Mcfe bbl Mcf
Proved Developed and Undeveloped Reserve (Energy) [Roll Forward]
Proved reserves, beginning of period, (bcfe) | Mcfe	21,148,000,000	11,990,000,000	12,721,000,000
Revisions of previous estimates due to price | Mcfe	55,000,000	415,000,000	(4,370,000,000)
Extensions, discoveries and other additions | Mcfe	2,428,000,000	1,961,000,000	741,000,000
Production | Mcfe	(1,733,000,000)	(1,240,000,000)	(880,000,000)
Acquisition of reserves in place (1) | Mcfe	0	5,753,000,000	2,354,000,000
Disposition of reserves in place | Mcfe	(43,000,000)	(1,000,000)	0
Proved reserves, end of period, (bcfe) | Mcfe	21,625,000,000	21,148,000,000	11,990,000,000
Proved undeveloped reserves:
Proved undeveloped reverses (energy) | Mcfe	0	0	2,437,000,000
Natural Gas
Proved Developed and Undeveloped Reserve (Energy) [Roll Forward]
Proved developed reserves, reclassified to performance and production revisions | Bcf		158,000,000
Proved undeveloped reserves, reclassified to performance and production revisions | Bcf		997,000,000
Oil
Proved Developed and Undeveloped Reserve (Energy) [Roll Forward]
Proved developed reserves, reclassified to performance and production revisions		2,000
Proved undeveloped reserves, reclassified to performance and production revisions		13,000
NGL
Proved Developed and Undeveloped Reserve (Energy) [Roll Forward]
Proved developed reserves, reclassified to performance and production revisions		14,000
Proved undeveloped reserves, reclassified to performance and production revisions		112,000
United States
Proved Developed and Undeveloped Reserves [Roll Forward]
Acquisition of reserves in place (1) | Mcf			1,911
Proved Developed and Undeveloped Reserve (Energy) [Roll Forward]
Proved reserves, beginning of period, (bcfe) | Mcfe	21,148,000,000	11,990,000,000	12,721,000,000
Revisions of previous estimates due to price | Mcfe	55,000,000	415,000,000	(4,370,000,000)
Revisions of previous estimates other than price (3) | Mcfe	(230,000,000)	2,270,000,000	1,424,000,000
Extensions, discoveries and other additions | Mcfe	2,428,000,000	1,961,000,000	741,000,000
Production | Mcfe	(1,733,000,000)	(1,240,000,000)	(880,000,000)
Acquisition of reserves in place (1) | Mcfe	0	5,753,000,000	2,354,000,000
Disposition of reserves in place | Mcfe	(43,000,000)	(1,000,000)	0
Proved reserves, end of period, (bcfe) | Mcfe	21,625,000,000	21,148,000,000	11,990,000,000
Proved developed reserves as of:
Proved developed reserves (energy) | Mcfe	12,145,000,000	11,335,000,000	8,203,000,000
Proved undeveloped reserves:
Proved undeveloped reverses (energy) | Mcfe	9,480,000,000	9,813,000,000	3,787,000,000
United States | Natural Gas
Proved Developed and Undeveloped Reserves [Roll Forward]
Proved reserves, beginning of year | Mcf	17,207	9,181	8,630
Revisions of previous estimates due to price | Mcf	61	501	(2,143)
Revisions of previous estimates other than price (3) | Mcf	(458)	1,402	763
Extensions, discoveries and other additions | Mcf	2,106	1,389	714
Production | Mcf	(1,520)	(1,015)	(694)
Acquisition of reserves in place (1) | Mcf	0	5,750
Disposition of reserves in place | Mcf	(34)	(1)	0
Proved reserves, end of year | Mcf	17,362	17,207	9,181
Proved developed reserves as of:
Proved developed reserves (volume) | Mcf	9,793	9,308	6,342
Proved undeveloped reserves:
Proved undeveloped reserves (volume) | Mcf	7,569	7,899	2,839
United States | Oil
Proved Developed and Undeveloped Reserves [Roll Forward]
Proved reserves, beginning of year	79,779,000	58,024,000	72,925,000
Revisions of previous estimates due to price	(107,000)	1,414,000	(32,507,000)
Revisions of previous estimates other than price (3)	(2,149,000)	17,384,000	3,816,000
Extensions, discoveries and other additions	10,877,000	9,381,000	135,000
Production	(4,993,000)	(6,610,000)	(5,141,000)
Acquisition of reserves in place (1)	0	247,000	18,796,000
Disposition of reserves in place	(21,000)	(61,000)	0
Proved reserves, end of year	83,386,000	79,779,000	58,024,000
Proved developed reserves as of:
Proved developed reserves (volume)	41,138,000	40,930,000	33,563,000
Proved undeveloped reserves:
Proved undeveloped reserves (volume)	42,248,000	38,849,000	24,461,000
United States | NGL
Proved Developed and Undeveloped Reserves [Roll Forward]
Proved reserves, beginning of year	576,964,000	410,151,000	608,761,000
Revisions of previous estimates due to price	(828,000)	(15,525,000)	(338,639,000)
Revisions of previous estimates other than price (3)	40,138,000	127,197,000	106,444,000
Extensions, discoveries and other additions	42,719,000	85,901,000	4,371,000
Production	(30,446,000)	(30,940,000)	(25,927,000)
Acquisition of reserves in place (1)	0	180,000	55,141,000
Disposition of reserves in place	(1,411,000)	0	0
Proved reserves, end of year	627,136,000	576,964,000	410,151,000
Proved developed reserves as of:
Proved developed reserves (volume)	350,821,000	296,832,000	276,548,000
Proved undeveloped reserves:
Proved undeveloped reserves (volume)	276,315,000	280,132,000	133,603,000