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Supplemental Oil and Gas Information (Unaudited) (Tables)
 12 Months Ended
Dec. 31, 2023
Oil and Gas Exploration and Production Industries Disclosures [Abstract]  
Summary of Proved Reserves Based on Average Prices
Equivalents
(Millions of barrels of oil equivalent)
TotalUnited
States		CanadaOther
Proved developed and undeveloped reserves:
December 31, 2020714.9 328.5 386.4 – 
Revisions of previous estimates(52.9)35.6 (89.3)0.8 
Extensions and discoveries109.4 18.2 91.3 – 
Purchases of properties7.4 1.6 5.8 – 
Sales of properties(0.7)– (0.7)– 
Production(61.1)(40.4)(20.6)(0.1)
December 31, 2021716.9 343.4 372.8 0.7 
Revisions of previous estimates(23.6)29.0 (52.8)0.2 
Improved recovery5.3 5.3 – – 
Extensions and discoveries80.1 20.6 59.5 – 
Purchases of properties5.0 5.0 – – 
Sales of properties(4.4)(4.4)– – 
Production(63.9)(41.9)(21.7)(0.3)
December 31, 2022715.4 357.0 357.8 0.6 
Revisions of previous estimates(13.3)(13.3)0.2 (0.2)
Improved recovery0.4 – 0.4 – 
Extensions and discoveries112.6 12.7 87.3 12.6 
Sales of properties(5.2)– (5.2)– 
Production(70.4)(45.3)(25.0)(0.1)
December 31, 2023 ¹739.5 311.1 415.5 12.9 
Proved developed reserves:
December 31, 2020410.8 230.3 180.5 – 
December 31, 2021419.2 241.9 176.8 0.6 
December 31, 2022436.0 264.2 171.3 0.5 
December 31, 2023 ²425.5 223.2 202.0 0.3 
Proved undeveloped reserves:
December 31, 2020304.1 98.2 205.9 – 
December 31, 2021297.7 101.6 196.0 0.1 
December 31, 2022279.4 92.8 186.5 0.1 
December 31, 2023 ³314.0 87.9 213.5 12.6 
1  Includes proved reserves of 15.5 MMBOE, consisting of 14.0 MMBBL oil, 0.6 MMBBL NGLs and 5.3 BCF natural gas attributable to the noncontrolling interest in MP GOM.
2 Includes proved developed reserves of 12.8 MMBOE, consisting of 11.7 MMBBL oil, 0.5 MMBBL NGLs and 3.8 BCF natural gas attributable to the noncontrolling interest in MP GOM.
3 Includes proved undeveloped reserves of 2.7 MMBOE, consisting of 2.3 MMBBL oil, 0.1 MMBBL NGLs and 1.5 BCF natural gas attributable to the noncontrolling interest in MP GOM.
4 Totals within the tables may not add as a result of rounding.
(Millions of barrels)
TotalUnited
States		CanadaOther
Proved developed and undeveloped crude oil reserves:
December 31, 2020266.5 240.6 25.9 – 
Revisions of previous estimates39.3 31.1 7.5 0.7 
Extensions and discoveries14.1 13.5 0.6 – 
Purchases of properties6.4 1.3 5.2 – 
Production(34.9)(31.5)(3.3)(0.1)
December 31, 2021291.5 255.0 35.9 0.6 
Revisions of previous estimates23.4 19.9 3.3 0.2 
Improved recovery4.7 4.7 – – 
Extensions and discoveries18.9 16.1 2.8 – 
Purchases of properties4.2 4.2 – – 
Sales of properties(3.6)(3.6)– – 
Production(35.5)(32.7)(2.5)(0.3)
December 31, 2022303.6 263.6 39.5 0.5 
Revisions of previous estimates(10.8)(8.9)(1.8)(0.1)
Improved recovery0.4 – 0.4 – 
Extensions and discoveries22.5 8.9 1.5 12.1 
Sales of properties(2.0)– (2.0)– 
Production(37.9)(35.6)(2.2)(0.1)
December 31, 2023 ¹275.8 228.0 35.4 12.4 
Proved developed crude oil reserves:
December 31, 2020179.8 161.4 18.4 – 
December 31, 2021191.5 174.9 16.0 0.5 
December 31, 2022209.0 194.4 14.2 0.4 
December 31, 2023 ²186.3 163.7 22.3 0.3 
Proved undeveloped crude oil reserves:
December 31, 202086.7 79.2 7.5 – 
December 31, 202199.9 80.0 19.8 0.1 
December 31, 202294.6 69.2 25.3 0.1 
December 31, 2023 ³89.5 64.3 13.1 12.1 
1 Includes total proved reserves of 14.0 MMBBL for Total and United States attributable to the noncontrolling interest in MP GOM.
2 Includes proved developed reserves of 11.7 MMBBL for Total and United States attributable to the noncontrolling interest in MP GOM.
3 Includes proved undeveloped reserves of 2.3 MMBBL for Total and United States attributable to the noncontrolling interest in MP GOM.
4 Totals within the tables may not add as a result of rounding.
(Millions of barrels)
TotalUnited
States		Canada Other
Proved developed and undeveloped NGL reserves:
December 31, 202038.2 34.6 3.6 – 
Revisions of previous estimates1.4 1.4 – – 
Extensions and discoveries2.5 2.4 0.1 – 
Purchase of properties0.1 0.1 – – 
Production(3.8)(3.4)(0.4)– 
December 31, 202138.4 35.1 3.3 – 
Revisions of previous estimates4.4 3.9 0.5 – 
Improved recovery0.2 0.2 – – 
Extensions and discoveries2.5 1.9 0.6 – 
Purchases of properties0.3 0.3 – – 
Sales of properties(0.2)(0.2)– – 
Production(3.9)(3.6)(0.3)– 
December 31, 202241.7 37.6 4.1 – 
Revisions of previous estimates(1.4)(1.2)(0.2)– 
Extensions and discoveries2.0 1.7 0.3 – 
Sales of properties(0.6)– (0.6)– 
Production(4.1)(3.8)(0.3)– 
December 31, 2023 ¹37.6 34.3 3.3 – 
Proved developed NGL reserves:
December 31, 202028.7 25.5 3.2 – 
December 31, 202128.4 25.6 2.8 – 
December 31, 202229.7 27.4 2.3 – 
December 31, 2023 ²25.9 24.1 1.8 – 
Proved undeveloped NGL reserves:
December 31, 20209.5 9.1 0.4 – 
December 31, 202110.0 9.5 0.5 – 
December 31, 202212.0 10.2 1.8 – 
December 31, 2023 ³11.7 10.2 1.5 – 
1 Includes total proved reserves of 0.6 MMBBL for Total and United States attributable to the noncontrolling interest in MP GOM.
2 Includes proved developed reserves of 0.5 MMBBL for Total and United States attributable to the noncontrolling interest in MP GOM.
3 Includes proved undeveloped reserves of 0.1 MMBBL for Total and United States attributable to the noncontrolling interest in MP GOM.
(Billions of cubic feet)
TotalUnited
States		CanadaOther
Proved developed and undeveloped natural gas reserves:    
December 31, 20202,461.0 319.5 2,141.5 – 
Revisions of previous estimates(562.1)18.7 (581.0)0.2 
Extensions and discoveries556.7 13.5 543.2 – 
Purchases of properties5.4 1.5 3.9 – 
Sales of properties(4.4)– (4.4)– 
Production(134.2)(32.8)(101.4)– 
December 31, 20212,322.3 320.3 2,001.8 0.2 
Revisions of previous estimates(309.8)30.7 (340.5)– 
Improved recovery2.6 2.6 – – 
Extensions and discoveries352.4 15.7 336.7 – 
Purchases of properties2.9 2.9 – – 
Sale of properties(3.6)(3.6)– – 
Production(146.9)(33.7)(113.2)– 
December 31, 20222,219.9 334.9 1,884.8 0.2 
Revisions of previous estimates(6.9)(19.0)12.1 – 
Extensions and discoveries528.9 12.3 513.8 2.8 
Sales of properties(15.6)– (15.6)– 
Production(170.1)(35.1)(135.0)– 
December 31, 2023 1,4
2,556.2 293.1 2,260.1 3.0 
Proved developed natural gas reserves:
December 31, 20201,213.8 260.2 953.6 – 
December 31, 20211,196.0 248.1 947.7 0.2 
December 31, 20221,183.1 254.1 928.8 0.2 
December 31, 2023 2,4
1,279.3 212.4 1,066.7 0.2 
Proved undeveloped natural gas reserves:
December 31, 20201,247.2 59.3 1,187.9 – 
December 31, 20211,126.4 72.2 1,054.1 – 
December 31, 20221,036.8 80.8 956.0 – 
December 31, 2023 ³1,276.9 80.7 1,193.4 2.8 
1 Includes total proved reserves of 5.3 BCF for Total and United States attributable to the noncontrolling interest in MP GOM.
2 Includes proved developed reserves of 3.8 BCF for Total and United States attributable to the noncontrolling interest in MP GOM.
3 Includes proved undeveloped reserves of 1.5 BCF for Total and United States attributable to the noncontrolling interest in MP GOM.
4 Includes proved natural gas reserves to be consumed in operations as fuel of 71.3 BCF, 41.9 BCF and 2.8 BCF for the U.S. Canada and Other, respectively, with 1.2 BCF attributable to the noncontrolling interest in MP GOM.
5 Totals within the tables may not add as a result of rounding.
Schedule of Costs Incurred in Oil and Gas Property Acquisition, Exploration and Development Activities
(Millions of dollars)
United
States
Canada 1
OtherTotal
Year ended December 31, 2023
Property acquisition costs
Unproved$– $– $8.5 $8.5 
Proved12.8 – 14.3 27.1 
Total acquisition costs12.8 – 22.8 35.6 
Exploration costs 157.8 0.4 39.9 198.1 
Development costs 667.2 206.2 7.4 880.8 
Total costs incurred837.8 206.6 70.1 1,114.5 
Charged to expense
Dry hole expense153.1 – 16.7 169.8 
Geophysical and other costs13.4 0.4 40.3 54.1 
Total charged to expense166.5 0.4 57.0 223.9 
Property additions$671.3 $206.2 $13.1 $890.6 
Year ended December 31, 2022
Property acquisition costs
Unproved$1.8 $– $– $1.8 
Proved128.5 – – 128.5 
Total acquisition costs130.3 – – 130.3 
Exploration costs 42.2 0.8 70.3 113.3 
Development costs 704.9 208.5 4.3 917.7 
Total costs incurred877.4 209.3 74.6 1,161.3 
Charged to expense
Dry hole expense23.0 – 59.1 82.1 
Geophysical and other costs15.8 0.8 21.1 37.7 
Total charged to expense38.8 0.8 80.2 119.8 
Property additions$838.6 $208.5 $(5.6)$1,041.5 
Year ended December 31, 2021
Property acquisition costs
Unproved$8.8 $– $– $8.8 
Proved19.9 (20.4)– (0.5)
Total acquisition costs28.7 (20.4)– 8.3 
Exploration costs 31.7 0.4 30.1 62.2 
Development costs 513.2 102.4 3.7 619.3 
Total costs incurred573.6 82.4 33.8 689.8 
Charged to expense
Dry hole expense17.3 – – 17.3 
Geophysical and other costs13.1 0.4 19.3 32.8 
Total charged to expense30.4 0.4 19.3 50.1 
Property additions$543.2 $82.0 $14.5 $639.7 
1 2021 Canada proved property acquisitions represents cash received from divesting partners on acquisition of an additional 7.525% working interest at Terra Nova as part of the sanction of an asset life extension project.
Schedule of Results of Operations for Oil and Gas Producing Activities
(Millions of dollars)
United
States		CanadaOtherTotal
Year ended December 31, 2023    
Revenues    
Crude oil and natural gas liquids sales$2,829.1 $165.7 $11.0 $3,005.8 
Natural gas sales92.7 278.2 – 370.9 
Sales of purchased natural gas– 72.2 – 72.2 
Total oil and natural gas revenues2,921.8 516.1 11.0 3,448.9 
Other operating revenues6.5 1.4 – 7.9 
Total revenues2,928.3 517.5 11.0 3,456.8 
Costs and expenses
Lease operating expenses630.7 151.8 1.9 784.4 
Severance and ad valorem taxes41.4 1.4 – 42.8 
Transportation, gathering and processing157.0 76.0 – 233.0 
Costs of purchased natural gas– 51.7 – 51.7 
Exploration costs charged to expense166.5 0.4 57.0 223.9 
Undeveloped lease amortization8.1 0.1 2.7 10.9 
Depreciation, depletion and amortization706.0 142.2 2.3 850.5 
Accretion of asset retirement obligations37.8 7.8 0.4 46.0 
Selling and general expenses11.8 16.5 9.4 37.7 
Other expenses (benefits)31.2 16.8 8.9 56.9 
Total costs and expenses1,790.5 464.7 82.6 2,337.8 
Results of operations before taxes1,137.8 52.8 (71.6)1,119.0 
Income tax expense (benefit)232.7 11.2 (6.1)237.8 
Results of operations$905.1 $41.6 $(65.5)$881.2 
Year ended December 31, 2022
Revenues
Crude oil and natural gas liquids sales$3,210.3 $267.5 $22.8 $3,500.6 
Natural gas sales225.3 312.6 – 537.9 
Sales of purchased natural gas
0.2 181.5 – 181.7 
Total oil and natural gas revenues3,435.8 761.6 22.8 4,220.2 
Other operating revenues25.4 1.3 – 26.7 
Total revenues3,461.2 762.9 22.8 4,246.9 
Costs and expenses
Lease operating expenses522.7 155.1 1.5 679.3 
Severance and ad valorem taxes55.7 1.3 – 57.0 
Transportation, gathering and processing142.2 70.5 – 212.7 
Costs of purchased natural gas0.2 171.8 – 172.0 
Exploration costs charged to expense38.8 0.8 80.2 119.8 
Undeveloped lease amortization8.7 0.2 4.4 13.3 
Depreciation, depletion and amortization617.0 141.5 5.4 763.9 
Accretion of asset retirement obligations36.5 9.6 0.1 46.2 
Selling and general expenses20.4 21.9 2.2 44.5 
Other expenses126.3 12.4 3.1 141.8 
Total costs and expenses1,568.5 585.1 96.9 2,250.5 
Results of operations before taxes1,892.7 177.8 (74.1)1,996.4 
Income tax expense (benefit)370.8 43.6 2.9 417.3 
Results of operations$1,521.9 $134.2 $(77.0)$1,579.1 
1   Results exclude corporate overhead, interest and discontinued operations. Results include noncontrolling interest in MP GOM.
(Millions of dollars)
United
States		CanadaOtherTotal
Year ended December 31, 2021
Revenues
Crude oil and natural gas liquids sales$2,199.7 $228.9 $4.9 $2,433.5 
Natural gas sales121.8 245.9 – 367.7 
Total oil and natural gas revenues2,321.5 474.8 4.9 2,801.2 
Other operating revenues16.0 1.5 – 17.5 
Total revenues2,337.5 476.3 4.9 2,818.7 
Costs and expenses
Lease operating expenses406.4 136.3 (3.2)539.5 
Severance and ad valorem taxes39.6 1.6 – 41.2 
Transportation, gathering and processing126.5 60.5 – 187.0 
Exploration costs charged to expense30.4 0.4 19.3 50.1 
Undeveloped lease amortization11.1 0.2 7.6 18.9 
Depreciation, depletion and amortization616.5 163.8 1.8 782.1 
Accretion of asset retirement obligations36.9 9.7 – 46.6 
Impairment of assets– 171.3 18.0 189.3 
Selling and general expenses20.5 16.5 6.6 43.6 
Other expenses99.4 (66.2)(2.2)31.0 
Total costs and expenses1,387.3 494.1 47.9 1,929.3 
Results of operations before taxes950.2 (17.8)(43.0)889.4 
Income tax expense (benefit)183.9 (1.7)(9.5)172.7 
Results of operations$766.3 $(16.1)$(33.5)$716.7 
1   Results exclude corporate overhead, interest and discontinued operations. Results include noncontrolling interest in MP GOM.
schedule of Standardized Measure of Discounted Future Net Cash Flow Relating to Proved Oil and Gas Reserves
(Millions of dollars)
United
States		CanadaOther Total
December 31, 2023    
Future cash inflows$18,927.6 $8,012.7 $1,004.2 $27,944.5 
Future development costs(1,685.3)(769.6)(304.3)(2,759.2)
Future production costs(7,856.2)(4,223.6)(288.7)(12,368.5)
Future income taxes(1,057.5)(634.6)(121.3)(1,813.4)
Future net cash flows8,328.6 2,384.9 289.9 11,003.4 
10% annual discount for estimated timing of cash flows(2,840.6)(1,056.9)(252.5)(4,150.0)
Standardized measure of discounted future net cash flows$5,488.0 $1,328.0 $37.4 $6,853.4 
December 31, 2022
Future cash inflows$27,277.9 $12,360.2 $59.2 $39,697.3 
Future development costs(1,594.5)(642.4)(1.4)(2,238.3)
Future production costs(8,297.4)(4,199.0)(12.1)(12,508.5)
Future income taxes(2,606.8)(1,788.7)(5.4)(4,400.9)
Future net cash flows14,779.2 5,730.1 40.3 20,549.6 
10% annual discount for estimated timing of cash flows(5,709.8)(3,015.6)(11.0)(8,736.4)
Standardized measure of discounted future net cash flows$9,069.4 $2,714.5 $29.3 $11,813.2 
December 31, 2021
Future cash inflows$18,449.1 $7,203.5 $44.0 $25,696.7 
Future development costs(1,164.3)(521.1)(1.5)(1,686.8)
Future production costs(7,140.6)(3,525.8)(9.1)(10,675.4)
Future income taxes(1,024.4)(565.4)(3.0)(1,592.8)
Future net cash flows9,119.9 2,591.3 30.4 11,741.6 
10% annual discount for estimated timing of cash flows(3,264.9)(1,169.3)(8.5)(4,442.7)
Standardized measure of discounted future net cash flows$5,855.1 $1,422.0 $21.9 $7,299.0 
1 Includes noncontrolling interest in MP GOM.
2 Totals within the table may not add as a result of rounding.
Schedule of Principal Sources of Change in the Standardized Measure of Discounted Future Net Cash Flows
The following are the principal sources of change in the standardized measure of discounted future net cash flows for the years shown.
(Millions of dollars)
202320222021
Net changes in prices and production costs 2
$(5,845.6)$4,812.2 $5,962.1 
Net changes in development costs(78.8)(531.1)(503.6)
Sales and transfers of oil and natural gas produced, net of production costs(2,264.8)(2,917.4)(2,220.5)
Net change due to extensions and discoveries770.4 1,223.5 908.5 
Net change due to purchases and sales of proved reserves(96.1)102.1 63.1 
Development costs incurred 
703.7 769.3 619.3 
Accretion of discount1,393.3 802.6 267.2 
Revisions of previous quantity estimates(771.5)1,652.9 277.1 
Net change in income taxes1,229.6 (1,399.9)(692.8)
Net increase (decrease)(4,959.8)4,514.2 4,680.4 
Standardized measure at January 111,813.2 7,299.0 2,618.6 
Standardized measure at December 31$6,853.4 $11,813.2 $7,299.0 
1  Includes noncontrolling interest in MP GOM.
2 The average prices used for 2023 were $78.22 per barrel for NYMEX crude oil (WTI) and $2.64 per MCF for natural gas (Henry Hub). The average prices used for 2022 were $93.67 per barrel for NYMEX crude oil (WTI) and $6.36 per MCF for natural gas (Henry Hub). The average prices used for 2021 were $66.56 per barrel for NYMEX crude oil (WTI) and $3.60 per MCF for natural gas (Henry Hub).
Schedule of Capitalized Costs Relating to Oil and Gas Producing Activities
(Millions of dollars)
United
States		CanadaOtherTotal
December 31, 2023
Unproved oil and natural gas properties$337.3 $13.1 $49.7 $400.1 
Proved oil and natural gas properties15,868.4 4,716.0 153.7 20,738.1 
Gross capitalized costs16,205.7 4,729.1 203.4 21,138.2 
Accumulated depreciation, depletion and amortization
Unproved oil and natural gas properties(105.3)– (17.4)(122.7)
Proved oil and natural gas properties(9,552.9)(3,233.7)(42.8)(12,829.4)
Net capitalized costs$6,547.5 $1,495.4 $143.2 $8,186.1 
December 31, 2022
Unproved oil and natural gas properties$494.6 $19.2 $135.1 $648.9 
Proved oil and natural gas properties15,051.9 4,684.8 55.9 19,792.6 
Gross capitalized costs15,546.5 4,704.0 191.0 20,441.5 
Accumulated depreciation, depletion and amortization
Unproved oil and natural gas properties(117.8)– (14.7)(132.5)
Proved oil and natural gas properties(8,873.6)(3,208.0)(41.3)(12,122.9)
Net capitalized costs$6,555.1 $1,496.0 $135.0 $8,186.1