XML 63 R52.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Supplemental Oil and Gas Information (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2018
Reserve Quantities [Line Items] |
Costs Incurred in Oil and Gas Property Acquisition, Exploration and Development Activities |
﻿ |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |
﻿(Millions of dollars) | United States |  | Canada |  | Malaysia |  | Other |  | Total
﻿Year ended December 31, 2018 |  |  |  |  |  |  |  |  |  |
﻿Property acquisition costs |  |  |  |  |  |  |  |  |  |
﻿ Unproved | $ | 2.8 |  | – |  | – |  | 0.2 |  | 3.0
﻿ Proved |  | 794.3 |  | – |  | – |  | – |  | 794.3
﻿ Total acquisition costs |  | 797.1 |  | – |  | – |  | 0.2 |  | 797.3
﻿Exploration costs 1 |  | 88.1 |  | 0.6 |  | 2.2 |  | 35.1 |  | 126.0
﻿Development costs 1 |  | 853.7 |  | 373.8 |  | 145.9 |  | 16.6 |  | 1,390.0
﻿ Total costs incurred |  | 1,738.9 |  | 374.4 |  | 148.1 |  | 51.9 |  | 2,313.3
﻿Charged to expense |  |  |  |  |  |  |  |  |  |
﻿ Dry hole expense |  | 16.0 |  | – |  | 0.1 |  | 4.5 |  | 20.6
﻿ Geophysical and other costs |  | 13.4 |  | 0.6 |  | 2.1 |  | 31.3 |  | 47.4
﻿ Total charged to expense |  | 29.4 |  | 0.6 |  | 2.2 |  | 35.8 |  | 68.0
﻿Property additions | $ | 1,709.5 |  | 373.8 |  | 145.9 |  | 16.1 |  | 2,245.3
﻿Year ended December 31, 2017 |  |  |  |  |  |  |  |  |  |
﻿Property acquisition costs |  |  |  |  |  |  |  |  |  |
﻿ Unproved | $ | 50.4 |  | – |  | – |  | 13.0 |  | 63.4
﻿ Proved |  | 7.7 |  | – |  | – |  | – |  | 7.7
﻿ Total acquisition costs |  | 58.1 |  | – |  | – |  | 13.0 |  | 71.1
﻿Exploration costs 1 |  | 13.7 |  | 0.6 |  | (8.9) |  | 73.8 |  | 79.2
﻿Development costs 1 |  | 508.4 |  | 273.8 |  | 35.7 |  | 1.1 |  | 819.0
﻿ Total costs incurred |  | 580.2 |  | 274.4 |  | 26.8 |  | 87.9 |  | 969.3
﻿Charged to expense |  |  |  |  |  |  |  |  |  |
﻿ Dry hole expense |  | (1.9) |  | – |  | 0.7 |  | (3.0) |  | (4.2)
﻿ Geophysical and other costs |  | 9.7 |  | 0.5 |  | 1.7 |  | 53.3 |  | 65.2
﻿ Total charged to expense |  | 7.8 |  | 0.5 |  | 2.4 |  | 50.3 |  | 61.0
﻿Property additions | $ | 572.4 |  | 273.9 |  | 24.4 |  | 37.6 |  | 908.3
﻿Year ended December 31, 2016 |  |  |  |  |  |  |  |  |  |
﻿Property acquisition costs |  |  |  |  |  |  |  |  |  |
﻿ Unproved | $ | 18.6 |  | – |  | – |  | – |  | 18.6
﻿ Proved |  | – |  | 206.7 |  | – |  | – |  | 206.7
﻿ Total acquisition costs |  | 18.6 |  | 206.7 | – | – |  | – |  | 225.3
﻿Exploration costs 1 |  | 18.5 |  | 3.6 |  | 6.0 |  | 42.0 |  | 70.1
﻿Development costs 1 |  | 239.7 |  | 165.1 |  | 102.9 |  | 0.3 |  | 508.0
﻿ Total costs incurred |  | 276.8 |  | 375.4 |  | 108.9 |  | 42.3 |  | 803.4
﻿Charged to expense |  |  |  |  |  |  |  |  |  |
﻿ Dry hole expense |  | 0.4 |  | – |  | 4.5 |  | 10.2 |  | 15.1
﻿ Geophysical and other costs |  | 5.7 |  | 3.6 |  | 0.7 |  | 33.4 |  | 43.4
﻿ Total charged to expense |  | 6.1 |  | 3.6 |  | 5.2 |  | 43.6 |  | 58.5
﻿Property additions | $ | 270.7 |  | 371.8 |  | 103.7 |  | (1.3) |  | 744.9
﻿ 1 Includes noncash asset retirement costs as follows:
﻿ |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |
﻿ 2018 |  |  |  |  |  |  |  |  |  |
﻿ Exploration costs | $ | – |  | – |  | – |  | – |  | –
﻿ Development costs |  | 366.0 |  | – |  | 7.3 |  | 0.2 |  | 373.5
﻿ | $ | 366.0 |  | – |  | 7.3 |  | 0.20 |  | 373.5
﻿ 2017 |  |  |  |  |  |  |  |  |  |
﻿ Exploration costs | $ | – |  | – |  | – |  | – |  | –
﻿ Development costs |  | 37.6 |  | 6.3 |  | 8.4 |  | – |  | 52.3
﻿ | $ | 37.6 |  | 6.3 |  | 8.4 |  | – |  | 52.3
﻿ 2016 |  |  |  |  |  |  |  |  |  |
﻿ Exploration costs | $ | – |  | – |  | – |  | – |  | –
﻿ Development costs |  | 0.9 |  | 10.5 |  | 2.3 |  | – |  | 13.7
﻿ | $ | 0.9 |  | 10.5 |  | 2.3 |  | – |  | 13.7
﻿
Results of Operations for Oil andGas Producing Activities |
﻿ |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |
﻿ | United |  |  |  |  |  |  |  |  |
﻿(Millions of dollars) | States |  | Canada |  |  | Malaysia |  | Other |  | Total
﻿Year ended December 31, 2018 |  |  |  |  |  |  |  |  |  |  |
﻿Revenues |  |  |  |  |  |  |  |  |  |  |
﻿ Crude oil and natural gas liquids sales | $ | 1,245.3 |  | 291.2 |  |  | 708.8 |  | 6.1 |  | 2,251.4
﻿ Natural gas sales |  | 42.9 |  | 147.6 |  |  | 144.7 |  | – |  | 335.2
﻿ Total oil and gas revenues |  | 1,288.2 |  | 438.8 |  |  | 853.5 |  | 6.1 |  | 2,586.6
﻿ Other operating revenues |  | 1.4 |  | (0.2) |  |  | 0.7 |  | 16.1 |  | 18.0
﻿ Total revenues |  | 1,289.6 |  | 438.6 |  |  | 854.2 |  | 22.2 |  | 2,604.6
﻿Costs and expenses |  |  |  |  |  |  |  |  |  |  |
﻿ Lease operating expenses |  | 230.5 |  | 122.6 |  |  | 202.1 |  | 0.7 |  | 555.9
﻿ Severance and ad valorem taxes |  | 50.9 |  | 1.2 |  |  | – |  | – |  | 52.1
﻿ Exploration costs charged to expense |  | 29.4 |  | 0.6 |  |  | 2.2 |  | 31.6 |  | 63.8
﻿ Undeveloped lease amortization |  | 36.8 |  | 0.8 |  |  | – |  | 2.5 |  | 40.1
﻿ Depreciation, depletion and amortization |  | 519.5 |  | 232.4 |  |  | 198.6 |  | 3.5 |  | 954.0
﻿ Accretion of asset retirement obligations |  | 19.5 |  | 7.7 |  |  | 17.4 |  | – |  | 44.6
﻿ Impairment of assets |  | 20.0 |  | – |  |  | – |  | – |  | 20.0
﻿ Redetermination expense |  | – |  | – |  |  | 11.3 |  | – |  | 11.3
﻿ Selling and general expenses |  | 49.0 |  | 26.8 |  |  | 10.8 |  | 23.5 |  | 110.1
﻿ Other expenses (benefits) |  | 23.0 |  | (19.1) |  |  | (1.0) |  | 2.3 |  | 5.2
﻿ Total costs and expenses |  | 978.6 |  | 373.0 |  |  | 441.4 |  | 64.1 |  | 1,857.1
﻿ Results of operations before taxes |  | 311.0 |  | 65.6 |  |  | 412.8 |  | (41.9) |  | 747.5
﻿ Income tax expense (benefit) |  | 68.1 |  | 14.5 |  |  | 143.3 |  | (25.3) |  | 200.6
﻿ Results of operations | $ | 242.9 |  | 51.1 |  |  | 269.5 |  | (16.6) |  | 546.9
﻿Year ended December 31, 2017 |  |  |  |  |  |  |  |  |  |  |
﻿Revenues |  |  |  |  |  |  |  |  |  |  |
﻿ Crude oil and natural gas liquids sales | $ | 903.7 |  | 203.7 |  |  | 639.9 |  | – |  | 1,747.3
﻿ Natural gas sales |  | 37.9 |  | 155.1 |  |  | 138.2 |  | – |  | 331.2
﻿ Total oil and gas revenues |  | 941.6 |  | 358.8 |  |  | 778.1 |  | – |  | 2,078.5
﻿ Other operating revenues |  | 2.7 |  | 126.7 |  |  | 3.0 |  | – |  | 132.4
﻿ Total revenues |  | 944.3 |  | 485.5 |  |  | 781.1 |  | – |  | 2,210.9
﻿Costs and expenses |  |  |  |  |  |  |  |  |  |  |
﻿ Lease operating expenses |  | 198.5 |  | 101.1 |  |  | 168.8 |  | – |  | 468.4
﻿ Severance and ad valorem taxes |  | 42.2 |  | 1.5 |  |  | – |  | – |  | 43.7
﻿ Exploration costs charged to expense |  | 7.8 |  | 0.5 |  |  | 2.4 |  | 50.3 |  | 61.0
﻿ Undeveloped lease amortization |  | 60.2 |  | 1.6 |  |  | – |  | – |  | 61.8
﻿ Depreciation, depletion and amortization |  | 546.1 |  | 185.4 |  |  | 204.6 |  | 3.8 |  | 939.9
﻿ Accretion of asset retirement obligations |  | 17.4 |  | 7.9 |  |  | 17.3 |  | – |  | 42.6
﻿ Redetermination expense |  | – |  | – |  |  | 15.0 |  | – |  | 15.0
﻿ Selling and general expenses |  | 61.8 |  | 28.3 |  |  | 14.0 |  | 19.6 |  | 123.7
﻿ Other expenses |  | 20.0 |  | 2.3 |  |  | 8.4 |  | – |  | 30.7
﻿ Total costs and expenses |  | 954.0 |  | 328.6 |  |  | 430.5 |  | 73.7 |  | 1,786.8
﻿ Results of operations before taxes |  | (9.7) |  | 156.9 |  |  | 350.6 |  | (73.7) |  | 424.1
﻿ Income tax expense (benefit) |  | (0.8) |  | 44.4 |  |  | 126.4 |  | (36.2) |  | 133.8
﻿ Results of operations | $ | (8.9) |  | 112.5 |  |  | 224.2 |  | (37.5) |  | 290.3
1 Results exclude corporate overhead, interest and discontinued operations. 2018 includes noncontrolling interest in MP GOM. ﻿ ﻿ ﻿ ﻿ ﻿ ﻿ ﻿ ﻿ Schedule 5 – Results of Operations for Oil and Gas Producing Activities 1 – Continued ﻿ ﻿
﻿ |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  | Canada |  |  |  |  |  |
﻿ | United |  | Conven- |  |  |  |  |  |  |  |
﻿(Millions of dollars) | States |  | tional |  | Synthetic |  | Malaysia |  | Other |  | Total
﻿Year ended December 31, 2016 |  |  |  |  |  |  |  |  |  |  |  |
﻿Revenues |  |  |  |  |  |  |  |  |  |  |  |
﻿ Crude oil and natural gas liquids sales | $ | 714.1 |  | 171.7 |  | 60.7 |  | 623.7 |  | – |  | 1,570.2
﻿ Natural gas sales |  | 35.1 |  | 130.0 |  | – |  | 127.6 |  | – |  | 292.7
﻿ Total oil and gas revenues |  | 749.2 |  | 301.7 |  | 60.7 |  | 751.3 |  | – |  | 1,862.9
﻿ Other operating revenues |  | (0.1) |  | (0.7) |  | 3.6 |  | 2.1 |  | 0.2 |  | 5.1
﻿ Total revenues |  | 749.1 |  | 301.0 |  | 64.3 |  | 753.4 |  | 0.2 |  | 1,868.0
﻿Costs and expenses |  |  |  |  |  |  |  |  |  |  |  |
﻿ Lease operating expenses |  | 218.6 |  | 102.6 |  | 69.8 |  | 168.4 |  | – |  | 559.4
﻿ Severance and ad valorem taxes |  | 37.0 |  | 4.3 |  | 2.5 |  | – |  | – |  | 43.8
﻿ Exploration costs charged to expense |  | 6.1 |  | 3.6 |  | – |  | 5.2 |  | 43.6 |  | 58.5
﻿ Undeveloped lease amortization |  | 38.4 |  | 4.5 |  | – |  | – |  | 0.5 |  | 43.4
﻿ Depreciation, depletion and amortization |  | 600.5 |  | 186.7 |  | 16.5 |  | 227.7 |  | 5.9 |  | 1,037.3
﻿ Accretion of asset retirement obligations |  | 17.1 |  | 10.9 |  | 2.4 |  | 16.3 |  | – |  | 46.7
﻿ Impairment of assets |  | – |  | 95.1 |  | – |  | – |  | – |  | 95.1
﻿ Redetermination expense |  | – |  | – |  | – |  | 39.1 |  | – |  | 39.1
﻿ Selling and general expenses |  | 54.0 |  | 28.2 |  | 0.5 |  | 15.4 |  | 33.6 |  | 131.7
﻿ Other expenses |  | 7.3 |  | 7.9 |  | – |  | 24.3 |  | (9.9) |  | 29.6
﻿ Total costs and expenses |  | 979.0 |  | 443.8 |  | 91.7 |  | 496.4 |  | 73.7 |  | 2,084.6
﻿ Results of operations before taxes |  | (229.9) |  | (142.8) |  | (27.4) |  | 257.0 |  | (73.5) |  | (216.6)
﻿ Income tax expense (benefit) |  | (65.7) |  | (58.9) |  | (75.4) |  | 85.9 |  | (18.8) |  | (132.9)
﻿ Results of operations | $ | (164.2) |  | (83.9) |  | 48.0 |  | 171.1 |  | (54.7) |  | (83.7)
﻿ 1 Results exclude corporate overhead, interest and discontinued operations.
Standardized Measure of Discounted Future Net Cash Flow Relating to Proved Oil and Gas Reserves |
﻿ |  |  |  |  |  |  |  |
﻿(Millions of dollars) | United States |  | Canada |  | Malaysia |  | Total
﻿December 31, 2018 |  |  |  |  |  |  |  |
﻿Future cash inflows | $ | 23,473.9 |  | 5,437.5 |  | 5,511.6 |  | 34,423.0
﻿Future development costs |  | (3,279.1) |  | (1,362.7) |  | (517.4) |  | (5,159.2)
﻿Future production costs |  | (7,279.5) |  | (2,693.0) |  | (2,813.4) |  | (12,785.9)
﻿Future income taxes |  | (2,216.5) |  | (236.4) |  | (472.0) |  | (2,924.9)
﻿ Future net cash flows |  | 10,698.8 |  | 1,145.4 |  | 1,708.8 |  | 13,553.0
﻿10% annual discount for estimated timing of cash flows |  | (4,295.4) |  | (531.4) |  | (446.3) |  | (5,273.1)
﻿ Standardized measure of discounted future net cash flows | $ | 6,403.4 |  | 614.0 |  | 1,262.5 |  | 8,279.9
﻿December 31, 2017 |  |  |  |  |  |  |  |
﻿Future cash inflows | $ | 12,885.8 |  | 4,714.3 |  | 4,392.0 |  | 21,992.1
﻿Future development costs |  | (2,079.5) |  | (1,081.7) |  | (632.3) |  | (3,793.5)
﻿Future production costs |  | (4,765.3) |  | (2,507.4) |  | (2,305.0) |  | (9,577.7)
﻿Future income taxes |  | (893.7) |  | (161.1) |  | (232.2) |  | (1,287.0)
﻿ Future net cash flows |  | 5,147.3 |  | 964.1 |  | 1,222.5 |  | 7,333.9
﻿10% annual discount for estimated timing of cash flows |  | (2,698.2) |  | (394.6) |  | (318.2) |  | (3,411.0)
﻿ Standardized measure of discounted future net cash flows | $ | 2,449.1 |  | 569.5 |  | 904.3 |  | 3,922.9
﻿December 31, 2016 |  |  |  |  |  |  |  |
﻿Future cash inflows | $ | 9,477.9 |  | 3,752.7 |  | 4,318.7 |  | 17,549.3
﻿Future development costs |  | (1,691.1) |  | (1,143.6) |  | (763.8) |  | (3,598.5)
﻿Future production costs |  | (3,981.6) |  | (2,329.7) |  | (2,661.2) |  | (8,972.5)
﻿Future income taxes |  | (118.9) |  | (81.3) |  | (73.3) |  | (273.5)
﻿ Future net cash flows |  | 3,686.3 |  | 198.1 |  | 820.4 |  | 4,704.8
﻿10% annual discount for estimated timing of cash flows |  | (1,799.5) |  | (95.0) |  | (230.3) |  | (2,124.8)
﻿ Standardized measure of discounted future net cash flows | $ | 1,886.8 |  | 103.1 |  | 590.1 |  | 2,580.0
1 2018 includes noncontrolling interest in MP GOM.
Principal Sources of Change in the Standardized Measure of Discounted Future Net Cash Flows |
﻿ |  |  |  |  |  |
﻿ |  |  |  |  |  |
﻿(Millions of dollars) |  | 2018 |  | 2017 |  | 2016
﻿Net changes in prices and production costs | $ | 2,972.6 |  | 2,428.4 |  | (1,476.1)
﻿Net changes in development costs |  | (1,891.1) |  | (724.4) |  | 544.9
﻿Sales and transfers of oil and gas produced, net of production costs |  | (1,978.6) |  | (1,576.0) |  | (1,196.3)
﻿Net change due to extensions and discoveries |  | 1,930.3 |  | 807.9 |  | 280.5
﻿Net change due to purchases and sales of proved reserves |  | 3,152.4 |  | 85.9 |  | (583.4)
﻿Development costs incurred |  | 1,017.3 |  | 802.7 |  | 479.6
﻿Accretion of discount |  | 469.5 |  | 270.9 |  | 428.1
﻿Revisions of previous quantity estimates |  | (347.8) |  | (109.5) |  | (49.2)
﻿Net change in income taxes |  | (967.6) |  | (643.0) |  | 292.8
﻿ Net increase (decrease) |  | 4,357.0 |  | 1,342.9 |  | (1,279.1)
﻿Standardized measure at January 1 |  | 3,922.9 |  | 2,580.0 |  | 3,859.1
﻿ Standardized measure at December 31 | $ | 8,279.9 |  | 3,922.9 |  | 2,580.0
﻿
Capitalized Costs Relating to Oil and Gas Producing Activities |
﻿ |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |
﻿(Millions of dollars) | United States |  | Canada |  | Malaysia |  | Other |  | Total
﻿December 31, 2018 |  |  |  |  |  |  |  |  |  |
﻿Unproved oil and gas properties | $ | 394.2 |  | 250.0 |  | 21.2 |  | 176.9 |  | 842.3
﻿Proved oil and gas properties |  | 11,678.3 |  | 3,693.0 |  | 6,263.5 |  | – |  | 21,634.8
﻿ Gross capitalized costs |  | 12,072.5 |  | 3,943.0 |  | 6,284.7 |  | 176.9 |  | 22,477.1
﻿Accumulated depreciation, depletion and amortization |  |  |  |  |  |  |  |  |  |
﻿ Unproved oil and gas properties |  | (129.3) |  | (213.5) |  | – |  | (25.4) |  | (368.2)
﻿ Proved oil and gas properties |  | (5,433.7) |  | (2,088.8) |  | (4,963.5) |  | – |  | (12,486.0)
﻿ Net capitalized costs | $ | 6,509.5 |  | 1,640.7 |  | 1,321.2 |  | 151.5 |  | 9,622.9
﻿December 31, 2017 |  |  |  |  |  |  |  |  |  |
﻿Unproved oil and gas properties | $ | 360.9 |  | 286.8 |  | 20.5 |  | 162.1 |  | 830.3
﻿Proved oil and gas properties |  | 9,606.4 |  | 3,603.4 |  | 6,139.7 |  | – |  | 19,349.5
﻿ Gross capitalized costs |  | 9,967.3 |  | 3,890.2 |  | 6,160.2 |  | 162.1 |  | 20,179.8
﻿Accumulated depreciation, depletion and amortization |  |  |  |  |  |  |  |  |  |
﻿ Unproved oil and gas properties |  | (149.5) |  | (230.7) |  | – |  | (21.8) |  | (402.0)
﻿ Proved oil and gas properties |  | (4,893.8) |  | (2,027.9) |  | (4,774.5) |  | – |  | (11,696.2)
﻿ Net capitalized costs | $ | 4,924.0 |  | 1,631.6 |  | 1,385.7 |  | 140.3 |  | 8,081.6
﻿
Crude Oil And Condensate [Member] |
Reserve Quantities [Line Items] |
Summary of Proved Reserves Based on Average Prices |
﻿ |  |  |  |  |  |  |  |  |  |  |
﻿ | Crude & Synthetic Oil |  | Crude Oil |  | Synthetic Oil 1
﻿(Millions of barrels) | Total |  | Total |  | United States |  | Canada |  | Malaysia |  | Canada
﻿Proved developed and undeveloped crude oil / synthetic oil reserves: |  |  |  |  |  |  |  |  |  |  |
﻿December 31, 2015 | 456.2 |  | 341.4 |  | 238.9 |  | 27.9 |  | 74.6 |  | 114.8
﻿Revisions of previous estimates | (5.8) |  | (5.8) |  | (10.9) |  | 2.5 |  | 2.6 |  | –
﻿Extensions and discoveries | 11.0 |  | 11.0 |  | 8.6 |  | – |  | 2.4 |  | –
﻿Purchases of properties | 26.3 |  | 26.3 |  | – |  | 26.3 |  | – |  | –
﻿Sales of properties | (121.0) |  | (7.8) |  | (4.5) |  | (3.3) |  | – |  | (113.2)
﻿Production | (37.7) |  | (36.1) |  | (17.7) |  | (4.5) |  | (13.9) |  | (1.6)
﻿December 31, 2016 | 329.0 |  | 329.0 |  | 214.4 |  | 48.9 |  | 65.7 |  | (0.0)
﻿Revisions of previous estimates | (6.0) |  | (6.0) |  | (4.7) |  | 2.3 |  | (3.6) |  | –
﻿Improved recovery | 2.0 |  | 2.0 |  | – |  | – |  | 2.0 |  | –
﻿Extensions and discoveries | 31.6 |  | 31.6 |  | 27.2 |  | 4.4 |  | – |  | –
﻿Purchases of properties | 4.7 |  | 4.7 |  | 4.7 |  | – |  | – |  | –
﻿Production | (33.2) |  | (33.2) |  | (16.9) |  | (4.1) |  | (12.2) |  | –
﻿December 31, 2017 | 328.1 |  | 328.1 |  | 224.7 |  | 51.5 |  | 51.9 |  | –
﻿Revisions of previous estimates | (15.3) |  | (15.3) |  | (15.0) |  | (8.0) |  | 7.7 |  | –
﻿Improved recovery | 0.8 |  | 0.8 |  | – |  | – |  | 0.8 |  | –
﻿Extensions and discoveries | 58.9 |  | 58.9 |  | 42.9 |  | 16.0 |  | – |  | –
﻿Purchases of properties | 93.6 |  | 93.6 |  | 92.3 |  | – |  | 1.3 |  | –
﻿Production | (33.6) |  | (33.6) |  | (18.4) |  | (4.5) |  | (10.7) |  | –
﻿ December 31, 2018 2 | 432.5 |  | 432.5 |  | 326.5 |  | 55.0 |  | 51.0 |  | –
﻿Proved developed crude oil/ synthetic oil reserves: |  |  |  |  |  |  |  |  |  |  |
﻿ December 31, 2015 | 326.6 |  | 211.8 |  | 125.9 |  | 23.8 |  | 62.1 |  | 114.8
﻿ December 31, 2016 | 184.9 |  | 184.9 |  | 113.9 |  | 19.2 |  | 51.8 |  | –
﻿ December 31, 2017 | 185.5 |  | 185.5 |  | 126.3 |  | 21.9 |  | 37.3 |  | –
﻿ December 31, 2018 3 | 249.3 |  | 249.3 |  | 189.0 |  | 23.3 |  | 37.0 |  | –
﻿Proved undeveloped crude oil reserves: |  |  |  |  |  |  |  |  |  |  |
﻿ December 31, 2015 | 129.6 |  | 129.6 |  | 113.0 |  | 4.1 |  | 12.5 |  | –
﻿ December 31, 2016 | 144.1 |  | 144.1 |  | 100.5 |  | 29.7 |  | 13.9 |  | –
﻿ December 31, 2017 | 142.6 |  | 142.6 |  | 98.4 |  | 29.6 |  | 14.6 |  | –
﻿ December 31, 2018 4 | 183.2 |  | 183.2 |  | 137.5 |  | 31.7 |  | 14.0 |  | –
﻿ 1 All synthetic oil operations were sold in June 2016. 2 Includes total proved reserves of 25.5 MMBO for Total and United States attributable to the noncontrolling interest in MP GOM. 3 Includes proved developed reserves of 19.1 MMBO for Total and United States attributable to the noncontrolling interest in MP GOM. 4 Includes proved undeveloped reserves of 6.4 MMBO for Total and United States attributable to the noncontrolling interest in MP GOM.
Natural Gas Liquids [Member] |
Reserve Quantities [Line Items] |
Summary of Proved Reserves Based on Average Prices |
﻿ |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |
﻿(Millions of barrels) | Total |  | United States |  | Canada |  | Malaysia |
﻿Proved developed and undeveloped NGL reserves: |  |  |  |  |  |  |  |
﻿December 31, 2015 | 36.4 |  | 35.4 |  | 0.4 |  | 0.6 |
﻿Revisions of previous estimates | 1.6 |  | 1.2 |  | 0.2 |  | 0.2 |
﻿Extensions and discoveries | 2.9 |  | 2.8 |  | 0.1 |  | – |
﻿Purchase of properties | 5.1 |  | – |  | 5.1 |  | – |
﻿Production | (3.5) |  | (3.0) |  | (0.2) |  | (0.3) |
﻿December 31, 2016 | 42.5 |  | 36.4 |  | 5.6 |  | 0.5 |
﻿Revisions of previous estimates | 1.3 |  | 2.0 |  | (0.6) |  | (0.1) |
﻿Extensions and discoveries | 7.8 |  | 7.0 |  | 0.8 |  | – |
﻿Purchases of properties | 0.5 |  | 0.5 |  | – |  | – |
﻿Production | (3.2) |  | (2.9) |  | (0.2) |  | (0.1) |
﻿December 31, 2017 | 48.9 |  | 43.0 |  | 5.6 |  | 0.3 |
﻿Revisions of previous estimates | (6.2) |  | (5.3) |  | (1.6) |  | 0.7 |
﻿Extensions and discoveries | 12.0 |  | 9.7 |  | 2.3 |  | – |
﻿Purchases of properties | 3.0 |  | 3.0 |  | – |  | – |
﻿Production | (3.5) |  | (2.8) |  | (0.4) |  | (0.3) |
﻿ December 31, 2018 1 | 54.2 |  | 47.6 |  | 5.9 |  | 0.7 |
﻿Proved developed NGL reserves: |  |  |  |  |  |  |  |
﻿ December 31, 2015 | 21.6 |  | 20.7 |  | 0.3 |  | 0.6 |
﻿ December 31, 2016 | 22.2 |  | 20.8 |  | 0.9 |  | 0.5 |
﻿ December 31, 2017 | 24.6 |  | 23.3 |  | 1.0 |  | 0.3 |
﻿ December 31, 2018 2 | 27.3 |  | 24.9 |  | 1.7 |  | 0.7 |
﻿Proved undeveloped NGL reserves: |  |  |  |  |  |  |  |
﻿ December 31, 2015 | 14.8 |  | 14.7 |  | 0.1 |  | – |
﻿ December 31, 2016 | 20.3 |  | 15.6 |  | 4.7 |  | – |
﻿ December 31, 2017 | 24.3 |  | 19.7 |  | 4.6 |  | – |
﻿ December 31, 2018 3 | 26.9 |  | 22.7 |  | 4.2 |  | – |
﻿ 1 Includes total proved reserves of 1.1 MMBBL for Total and United States attributable to the noncontrolling interest in MP GOM. 2 Includes proved developed reserves of 0.8 MMBBL for Total and United States attributable to the noncontrolling interest in MP GOM. 3 Includes proved undeveloped reserves of 0.3 MMBBL for Total and United States attributable to the noncontrolling interest in MP GOM.
Natural Gas [Member] |
Reserve Quantities [Line Items] |
Summary of Proved Reserves Based on Average Prices |
﻿ |  |  |  |  |  |  |  |
﻿(Billions of cubic feet) | Total |  | United States |  | Canada |  | Malaysia |
﻿Proved developed and undeveloped natural gas reserves: |  |  |  |  |  |  |  |
﻿December 31, 2015 | 1,688.8 |  | 232.4 |  | 909.6 |  | 546.8 |
﻿Revisions of previous estimates | 43.3 |  | 0.1 |  | 45.3 |  | (2.1) |
﻿Improved recovery | 164.2 |  | 6.4 |  | 120.2 |  | 37.6 |
﻿Extensions and discoveries | 122.3 |  | – |  | 122.3 |  | – |
﻿Sales of properties | (2.2) |  | (0.1) |  | (2.1) |  | – |
﻿Production | (138.4) |  | (19.4) |  | (76.4) |  | (42.6) |
﻿December 31, 2016 | 1,878.0 |  | 219.4 |  | 1,118.9 |  | 539.7 |
﻿Revisions of previous estimates | (5.4) |  | (16.0) |  | 19.4 |  | (8.8) |
﻿Extensions and discoveries | 190.6 |  | 32.2 |  | 156.7 |  | 1.7 |
﻿Purchases of properties | 4.0 |  | 4.0 |  | – |  | – |
﻿Production | (140.1) |  | (16.3) |  | (82.6) |  | (41.2) |
﻿December 31, 2017 | 1,927.1 |  | 223.3 |  | 1,212.4 |  | 491.4 |
﻿Revisions of previous estimates | (1.8) |  | 37.6 |  | (51.2) |  | 11.8 |
﻿Improved recovery | 0.6 |  | – |  | – |  | 0.6 |
﻿Extensions and discoveries | 310.3 |  | 44.7 |  | 261.0 |  | 4.6 |
﻿Purchases of properties | 61.7 |  | 20.3 |  | 41.4 |  | – |
﻿Production | (154.3) |  | (16.9) |  | (97.2) |  | (40.2) |
﻿ December 31, 2018 1 | 2,143.6 |  | 309.0 |  | 1,366.4 |  | 468.2 |
﻿Proved developed natural gas reserves: |  |  |  |  |  |  |  |
﻿ December 31, 2015 | 783.5 |  | 148.3 |  | 453.5 |  | 181.7 |
﻿ December 31, 2016 | 818.1 |  | 138.7 |  | 498.9 |  | 180.5 |
﻿ December 31, 2017 | 819.3 |  | 127.7 |  | 547.0 |  | 144.6 |
﻿ December 31, 2018 2 | 921.6 |  | 198.3 |  | 595.0 |  | 128.3 |
﻿Proved undeveloped natural gas reserves: |  |  |  |  |  |  |  |
﻿ December 31, 2015 | 905.3 |  | 84.1 |  | 456.1 |  | 365.1 |
﻿ December 31, 2016 | 1,059.9 |  | 80.7 |  | 620.0 |  | 359.2 |
﻿ December 31, 2017 | 1,107.8 |  | 95.6 |  | 665.5 |  | 346.7 |
﻿ December 31, 2018 3 | 1,222.0 |  | 110.7 |  | 771.4 |  | 339.9 |
﻿ 1 Includes total proved reserves of 10.8 BCF for Total and United States attributable to the noncontrolling interest in MP GOM. 2 Includes proved developed reserves of 8.2 BCF for Total and United States attributable to the noncontrolling interest in MP GOM. 3 Includes proved undeveloped reserves of 2.6 BCF for Total and United States attributable to the noncontrolling interest in MP GOM.

X
- Definition Tabular disclosure of aggregate capitalized costs relating to an enterprise's oil and gas producing activities and the aggregate related accumulated depreciation, depletion, amortization, and valuation allowances. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e61901-109447 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 55 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=34713648&loc=d3e63019-109448 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e61929-109447 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e61926-109447 + Details
Name: | us-gaap_CapitalizedCostsRelatingToOilAndGasProducingActivitiesDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the aggregate of costs (whether the costs are capitalized or charged to expense at the time they are incurred ) incurred for the year in oil and gas property acquisition, exploration and development activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 55 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=34713648&loc=d3e63042-109448 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62059-109447 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62038-109447 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62014-109447 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
Name: | us-gaap_CostIncurredInOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivitiesDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ReserveQuantitiesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the results of operations for oil and gas producing activities for the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 27 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62352-109447 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62246-109447 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62136-109447 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-10.(a)(17)(ii),(c)(3)(ii)(A)(1)) -URI http://asc.fasb.org/extlink&oid=82851474&loc=d3e511914-122862 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62259-109447 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62299-109447 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62094-109447 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62395-109447 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 55 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=34713648&loc=d3e63071-109448 + Details
Name: | us-gaap_ResultsOfOperationsForOilAndGasProducingActivitiesDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the aggregate change in the standardized measure of discounted future net cash flows relating to proved oil and gas reserves and oil and gas subject to purchases under long-term agreements in which the enterprise participates in the operation of the properties on which oil and gas is located or otherwise serves as the producer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 35 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62500-109447 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 36 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62536-109447 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62496-109447 + Details
Name: | us-gaap_ScheduleOfChangesInStandardizedMeasureOfDiscountedFutureNetCashFlowsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the net quantities of an enterprise's interests in proved developed and undeveloped reserves of (a) crude oil (including condensate and natural gas liquids), (b) natural gas (including coal bed methane), (c) synthetic oil, (d) synthetic gas, and (e) other nonrenewable natural resources that are intended to be upgraded during the period as of the beginning of the period, changes in quantities during the period, and as of the end of the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e61858-109447 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e61884-109447 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e61831-109447 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e61797-109447 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e61869-109447 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e61872-109447 + Details
Name: | us-gaap_ScheduleOfProvedDevelopedAndUndevelopedOilAndGasReserveQuantitiesTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the future net cash flows relating to proved oil and gas reserves and oil and gas subject to purchase under long-term agreements in which the enterprise participates in the operation of the properties on which the oil and gas is located or otherwise serves as the producer. This information is presented in aggregate and for each geographic area for which reserve quantities are disclosed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62424-109447 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 32 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62476-109447 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 36 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62536-109447 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 35 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62500-109447 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 31 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62455-109447 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62479-109447 + Details
Name: | us-gaap_StandardizedMeasureOfDiscountedFutureCashFlowsRelatingToProvedReservesDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ReserveQuantitiesByTypeOfReserveAxis=us-gaap_OilReservesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ReserveQuantitiesByTypeOfReserveAxis=us-gaap_NaturalGasLiquidsReservesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ReserveQuantitiesByTypeOfReserveAxis=us-gaap_NaturalGasReservesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |