Supplemental Oil and Gas Information (Unaudited) - Schedule of Proved Reserves Based on Average Prices (Details) MMcf in Millions, MMBbls in Millions, ft³ in Billions	12 Months Ended
	Dec. 31, 2024 MMBbls ft³	Dec. 31, 2024 ft³ MMBbls	Dec. 31, 2024 MMBbls MMcf ft³	Dec. 31, 2023 ft³ MMBbls MMcf	Dec. 31, 2022 MMBbls ft³ MMcf	Dec. 31, 2021 ft³ MMBbls
Proved developed and undeveloped oil reserves:
Proved developed reserves	436.2	436.2	436.2	425.5	436.0	419.2
Proved undeveloped reserves	292.8	292.8	292.8	314.0	279.4	297.7
Crude Oil
Proved developed and undeveloped oil reserves:
Proved developed and undeveloped crude oil/synthetic oil reserves, beginning balance	739.5			715.4	716.9
Revisions of previous estimates	14.3			(13.3)	(23.6)
Improved recovery	11.3			0.4	5.3
Extensions and discoveries	31.4			112.6	80.1
Purchases of properties					5.0
Sale of properties				(5.2)	(4.4)
Production	(67.5)			(70.4)	(63.9)
Proved developed and undeveloped reserves, ending balance	729.0			739.5	715.4
Net crude oil and condensate revenue | Crude Oil
Proved developed and undeveloped oil reserves:
Proved developed and undeveloped crude oil/synthetic oil reserves, beginning balance	275.8			303.6	291.5
Revisions of previous estimates	6.6			(10.8)	23.4
Improved recovery	10.7			0.4	4.7
Extensions and discoveries	16.6			22.5	18.9
Purchases of properties					4.2
Sale of properties				(2.0)	(3.6)
Production	(34.6)			(37.9)	(35.5)
Proved developed and undeveloped reserves, ending balance	275.1			275.8	303.6
Proved developed reserves	184.7	184.7	184.7	186.3	209.0	191.5
Proved undeveloped reserves	90.4	90.4	90.4	89.5	94.6	99.9
Net natural gas liquids revenue
Proved developed and undeveloped oil reserves:
Proved developed and undeveloped crude oil/synthetic oil reserves, beginning balance	37.6			41.7	38.4
Revisions of previous estimates	1.2			(1.4)	4.4
Improved recovery			0.4		0.2
Extensions and discoveries	2.9			2.0	2.5
Purchases of properties					0.3
Sale of properties				(0.6)	(0.2)
Production	(3.5)			(4.1)	(3.9)
Proved developed and undeveloped reserves, ending balance	38.6			37.6	41.7
Proved developed reserves	24.1	24.1	24.1	25.9	29.7	28.4
Proved undeveloped reserves	14.5	14.5	14.5	11.7	12.0	10.0
Net natural gas revenue
Proved developed and undeveloped oil reserves:
Proved developed and undeveloped crude oil/synthetic oil reserves, beginning balance | ft³		2,556.2		2,219.9	2,322.3
Revisions of previous estimates | ft³		39.1		(6.9)	(309.8)
Improved recovery			1,200.0		2,600.0
Extensions and discoveries | ft³		71.4		528.9	352.4
Purchases of properties | ft³					2.9
Sale of properties				(15,600.0)	(3.6)
Production | ft³		(176.1)		(170.1)	(146.9)
Proved developed and undeveloped reserves, ending balance | ft³		2,491.8		2,556.2	2,219.9
Proved developed reserves | ft³	1,364.2	1,364.2	1,364.2	1,279.3	1,183.1	1,196.0
Proved undeveloped reserves | ft³	1,127.6	1,127.6	1,127.6	1,276.9	1,036.8	1,126.4
MP Gulf of Mexico LLC
Proved developed and undeveloped oil reserves:
Proved developed and undeveloped reserves, ending balance	15.9
Proved developed reserves	14.4	14.4	14.4
Proved undeveloped reserves	1.5	1.5	1.5
MP Gulf of Mexico LLC | Net crude oil and condensate revenue
Proved developed and undeveloped oil reserves:
Proved developed and undeveloped reserves, ending balance	14.5
Proved developed reserves	13.2	13.2	13.2
Proved undeveloped reserves	1.3	1.3	1.3
MP Gulf of Mexico LLC | Net natural gas liquids revenue
Proved developed and undeveloped oil reserves:
Proved developed and undeveloped reserves, ending balance	0.6	1.1
Proved developed reserves	0.5	0.5	0.5
Proved undeveloped reserves	0.1	0.1	0.1
MP Gulf of Mexico LLC | Net natural gas revenue
Proved developed and undeveloped oil reserves:
Proved developed and undeveloped reserves, ending balance | ft³		5.0
Proved developed reserves | ft³	4.2	4.2	4.2
Proved undeveloped reserves | ft³	0.8	0.8	0.8
United States - Offshore
Proved developed and undeveloped oil reserves:
Proved developed reserves	218.9	218.9	218.9	223.2	264.2	241.9
Proved undeveloped reserves	88.5	88.5	88.5	87.9	92.8	101.6
United States - Offshore | Crude Oil
Proved developed and undeveloped oil reserves:
Proved developed and undeveloped crude oil/synthetic oil reserves, beginning balance	311.1			357.0	343.4
Revisions of previous estimates	8.1			(13.3)	29.0
Improved recovery	11.3			0.0	5.3
Extensions and discoveries	16.0			12.7	20.6
Purchases of properties					5.0
Sale of properties				0.0	(4.4)
Production	(39.1)			(45.3)	(41.9)
Proved developed and undeveloped reserves, ending balance	307.4			311.1	357.0
United States - Offshore | Net crude oil and condensate revenue | Crude Oil
Proved developed and undeveloped oil reserves:
Proved developed and undeveloped crude oil/synthetic oil reserves, beginning balance	228.0			263.6	255.0
Revisions of previous estimates	6.6			(8.9)	19.9
Improved recovery	10.7			0.0	4.7
Extensions and discoveries	10.7			8.9	16.1
Purchases of properties					4.2
Sale of properties				0.0	(3.6)
Production	(30.8)			(35.6)	(32.7)
Proved developed and undeveloped reserves, ending balance	225.2			228.0	263.6
Proved developed reserves	164.1	164.1	164.1	163.7	194.4	174.9
Proved undeveloped reserves	61.1	61.1	61.1	64.3	69.2	80.0
United States - Offshore | Net natural gas liquids revenue
Proved developed and undeveloped oil reserves:
Proved developed and undeveloped crude oil/synthetic oil reserves, beginning balance	34.3			37.6	35.1
Revisions of previous estimates	0.3			(1.2)	3.9
Improved recovery			0.4		0.2
Extensions and discoveries	2.4			1.7	1.9
Purchases of properties					0.3
Sale of properties				0.0	(0.2)
Production	(3.3)			(3.8)	(3.6)
Proved developed and undeveloped reserves, ending balance	34.1	67.9		34.3	37.6
Proved developed reserves	21.9	21.9	21.9	24.1	27.4	25.6
Proved undeveloped reserves	12.2	12.2	12.2	10.2	10.2	9.5
United States - Offshore | Net natural gas revenue
Proved developed and undeveloped oil reserves:
Proved developed and undeveloped crude oil/synthetic oil reserves, beginning balance | ft³		293.1		334.9	320.3
Revisions of previous estimates | ft³		7.7		(19.0)	30.7
Improved recovery			1,200.0		2,600.0
Extensions and discoveries | ft³		17.0		12.3	15.7
Purchases of properties | ft³					2.9
Sale of properties				0.0	(3.6)
Production | ft³		(30.1)		(35.1)	(33.7)
Proved developed and undeveloped reserves, ending balance | ft³		288.9		293.1	334.9
Proved developed reserves | ft³	196.8	196.8	196.8	212.4	254.1	248.1
Proved undeveloped reserves | ft³	92.1	92.1	92.1	80.7	80.8	72.2
Canada
Proved developed and undeveloped oil reserves:
Proved developed reserves	217.1	217.1	217.1	202.0	171.3	176.8
Proved undeveloped reserves	191.8	191.8	191.8	213.5	186.5	196.0
Canada | Crude Oil
Proved developed and undeveloped oil reserves:
Proved developed and undeveloped crude oil/synthetic oil reserves, beginning balance	415.5			357.8	372.8
Revisions of previous estimates	6.3			0.2	(52.8)
Improved recovery	0.0			0.4	0.0
Extensions and discoveries	15.4			87.3	59.5
Purchases of properties					0.0
Sale of properties				(5.2)	0.0
Production	(28.3)			(25.0)	(21.7)
Proved developed and undeveloped reserves, ending balance	408.9			415.5	357.8
Canada | Net crude oil and condensate revenue | Crude Oil
Proved developed and undeveloped oil reserves:
Proved developed and undeveloped crude oil/synthetic oil reserves, beginning balance	35.4			39.5	35.9
Revisions of previous estimates	0.1			(1.8)	3.3
Improved recovery	0.0			0.4	0.0
Extensions and discoveries	5.9			1.5	2.8
Purchases of properties					0.0
Sale of properties				(2.0)	0.0
Production	(3.7)			(2.2)	(2.5)
Proved developed and undeveloped reserves, ending balance	37.7			35.4	39.5
Proved developed reserves	20.4	20.4	20.4	22.3	14.2	16.0
Proved undeveloped reserves	17.3	17.3	17.3	13.1	25.3	19.8
Canada | Net natural gas liquids revenue
Proved developed and undeveloped oil reserves:
Proved developed and undeveloped crude oil/synthetic oil reserves, beginning balance	3.3			4.1	3.3
Revisions of previous estimates	0.9			(0.2)	0.5
Improved recovery			0.0		0.0
Extensions and discoveries	0.5			0.3	0.6
Purchases of properties					0.0
Sale of properties				(0.6)	0.0
Production	(0.2)			(0.3)	(0.3)
Proved developed and undeveloped reserves, ending balance	4.5	36.0		3.3	4.1
Proved developed reserves	2.2	2.2	2.2	1.8	2.3	2.8
Proved undeveloped reserves	2.3	2.3	2.3	1.5	1.8	0.5
Canada | Net natural gas revenue
Proved developed and undeveloped oil reserves:
Proved developed and undeveloped crude oil/synthetic oil reserves, beginning balance | ft³		2,260.1		1,884.8	2,001.8
Revisions of previous estimates | ft³		31.4		12.1	(340.5)
Improved recovery			0.0		0.0
Extensions and discoveries | ft³		54.4		513.8	336.7
Purchases of properties | ft³					0.0
Sale of properties				(15,600.0)	0.0
Production | ft³		(146.0)		(135.0)	(113.2)
Proved developed and undeveloped reserves, ending balance | ft³		2,199.9		2,260.1	1,884.8
Proved developed reserves | ft³	1,167.2	1,167.2	1,167.2	1,066.7	928.8	947.7
Proved undeveloped reserves | ft³	1,032.7	1,032.7	1,032.7	1,193.4	956.0	1,054.1
Other
Proved developed and undeveloped oil reserves:
Proved developed reserves	0.2	0.2	0.2	0.3	0.5	0.6
Proved undeveloped reserves	12.5	12.5	12.5	12.6	0.1	0.1
Other | Crude Oil
Proved developed and undeveloped oil reserves:
Proved developed and undeveloped crude oil/synthetic oil reserves, beginning balance	12.9			0.6	0.7
Revisions of previous estimates	(0.1)			(0.2)	0.2
Improved recovery	0.0			0.0
Extensions and discoveries	0.0			12.6	0.0
Purchases of properties					0.0
Sale of properties				0.0	0.0
Production	(0.1)			(0.1)	(0.3)
Proved developed and undeveloped reserves, ending balance	12.7			12.9	0.6
Other | Net crude oil and condensate revenue | Crude Oil
Proved developed and undeveloped oil reserves:
Proved developed and undeveloped crude oil/synthetic oil reserves, beginning balance	12.4			0.5	0.6
Revisions of previous estimates	(0.1)			(0.1)	0.2
Improved recovery	0.0			0.0
Extensions and discoveries	0.0			12.1	0.0
Purchases of properties					0.0
Sale of properties				0.0	0.0
Production	(0.1)			(0.1)	(0.3)
Proved developed and undeveloped reserves, ending balance	12.2			12.4	0.5
Proved developed reserves	0.2	0.2	0.2	0.3	0.4	0.5
Proved undeveloped reserves	12.0	12.0	12.0	12.1	0.1	0.1
Other | Net natural gas liquids revenue
Proved developed and undeveloped oil reserves:
Proved developed and undeveloped crude oil/synthetic oil reserves, beginning balance	0.0			0.0	0.0
Revisions of previous estimates	0.0			0.0	0.0
Improved recovery			0.0		0.0
Extensions and discoveries	0.0			0.0	0.0
Purchases of properties					0.0
Sale of properties				0.0	0.0
Production	0.0			0.0	0.0
Proved developed and undeveloped reserves, ending balance	0.0	2.8		0.0	0.0
Proved developed reserves	0.0	0.0	0.0	0.0	0.0	0.0
Proved undeveloped reserves	0.0	0.0	0.0	0.0	0.0	0.0
Other | Net natural gas revenue
Proved developed and undeveloped oil reserves:
Proved developed and undeveloped crude oil/synthetic oil reserves, beginning balance | ft³		3.0		0.2	0.2
Revisions of previous estimates | ft³		0.0		0.0	0.0
Improved recovery			0.0		0.0
Extensions and discoveries | ft³		0.0		2.8	0.0
Purchases of properties | ft³					0.0
Sale of properties				0.0	0.0
Production | ft³		0.0		0.0	0.0
Proved developed and undeveloped reserves, ending balance | ft³		3.0		3.0	0.2
Proved developed reserves | ft³	0.2	0.2	0.2	0.2	0.2	0.2
Proved undeveloped reserves | ft³	2.8	2.8	2.8	2.8	0.0	0.0
Malaysia | Crude Oil
Proved developed and undeveloped oil reserves:
Improved recovery					0.0
Malaysia | Net crude oil and condensate revenue | Crude Oil
Proved developed and undeveloped oil reserves:
Improved recovery					0.0