Segment Information - Operating Results by Segment (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | |
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Dec. 31, 2019 |
Segment Reporting Information | | | | | |
Revenue from sales | $ 571 | $ 1,093 | $ 1,591 | $ 2,145 | |
Lease Operating Expense | 98 | 122 | 236 | 273 | |
Production and Ad Valorem Taxes | 24 | 41 | 63 | 90 | |
Gathering, Transportation and Processing Expense | 89 | 96 | 184 | 198 | |
Asset Impairments | 51 | 0 | 2,754 | 0 | |
Total | 214 | 260 | 490 | 565 | |
Exploration Expense | 15 | 33 | 1,519 | 57 | |
Depreciation, Depletion and Amortization | 320 | 528 | 812 | 1,036 | |
Asset Impairments | 51 | | | | |
Goodwill Impairment | 0 | 0 | 110 | 0 | |
Firm Transportation Exit Cost | | | | 92 | |
(Gain) Loss on Commodity Derivative Instruments | 158 | (60) | (231) | 152 | |
Income (Loss) Before Income Taxes | (476) | 28 | (4,494) | (345) | |
Additions to Long-Lived Assets, Excluding Acquisitions | 106 | 647 | 548 | 1,359 | |
Additions to Equity Method Investments | 3 | 144 | 155 | | |
Property, Plant and Equipment, Net | 12,986 | | 12,986 | | $ 17,451 |
Equity Method Investment, Nonconsolidated Investee or Group of Investees | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | | | | 415 | |
Operating Segments | Equity Method Investment, Nonconsolidated Investee or Group of Investees | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | | | | 415 | |
Intersegment Eliminations and Other | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | (92) | (91) | (207) | (197) | |
Lease Operating Expense | (17) | (12) | (31) | (21) | |
Production and Ad Valorem Taxes | 0 | 0 | 0 | 0 | |
Gathering, Transportation and Processing Expense | (67) | (59) | (142) | (128) | |
Asset Impairments | | | 0 | | |
Total | (84) | (71) | (173) | (149) | |
Exploration Expense | 0 | | 0 | | |
Depreciation, Depletion and Amortization | (8) | (6) | (17) | (13) | |
Asset Impairments | 0 | | | | |
(Gain) Loss on Commodity Derivative Instruments | 0 | 0 | 0 | 0 | |
Income (Loss) Before Income Taxes | 11 | (15) | 0 | (29) | |
Additions to Long-Lived Assets, Excluding Acquisitions | (4) | (25) | (28) | (48) | |
Additions to Equity Method Investments | 0 | 0 | 0 | | |
Property, Plant and Equipment, Net | (222) | | (222) | | (223) |
Corporate | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 16 | 23 | 33 | 50 | |
Lease Operating Expense | 0 | 0 | 0 | 0 | |
Production and Ad Valorem Taxes | 0 | 0 | 0 | 0 | |
Gathering, Transportation and Processing Expense | 0 | 0 | 0 | 0 | |
Asset Impairments | | | 0 | | |
Total | 0 | 0 | 0 | 0 | |
Exploration Expense | 0 | | 0 | | |
Depreciation, Depletion and Amortization | 12 | 15 | 25 | 30 | |
Asset Impairments | 0 | | | | |
Firm Transportation Exit Cost | | | | 92 | |
(Gain) Loss on Commodity Derivative Instruments | 0 | 0 | 0 | 0 | |
Income (Loss) Before Income Taxes | (194) | (182) | (402) | (446) | |
Additions to Long-Lived Assets, Excluding Acquisitions | 6 | 9 | 13 | 18 | |
Additions to Equity Method Investments | 0 | 0 | 0 | | |
Property, Plant and Equipment, Net | 164 | | 164 | | 216 |
United States | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 321 | 802 | 960 | 1,565 | |
Lease Operating Expense | 81 | 114 | 189 | 239 | |
Production and Ad Valorem Taxes | 23 | 40 | 60 | 87 | |
Gathering, Transportation and Processing Expense | 133 | 124 | 279 | 266 | |
Asset Impairments | | | 2,703 | | |
Total | 240 | 279 | 535 | 596 | |
Exploration Expense | 5 | | 1,499 | | |
Depreciation, Depletion and Amortization | 252 | 457 | 671 | 896 | |
Asset Impairments | 0 | | | | |
(Gain) Loss on Commodity Derivative Instruments | 149 | (58) | (240) | 130 | |
Income (Loss) Before Income Taxes | (359) | 70 | (4,276) | (177) | |
Additions to Long-Lived Assets, Excluding Acquisitions | 65 | 478 | 422 | 990 | |
Additions to Equity Method Investments | 0 | 0 | 0 | | |
Property, Plant and Equipment, Net | 7,473 | | 7,473 | | 11,859 |
Eastern Mediter-ranean | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 138 | 107 | 327 | 225 | |
Lease Operating Expense | 15 | 9 | 28 | 19 | |
Production and Ad Valorem Taxes | 0 | 0 | 0 | 0 | |
Gathering, Transportation and Processing Expense | 3 | 0 | 6 | 0 | |
Asset Impairments | | | 0 | | |
Total | 18 | 9 | 34 | 19 | |
Exploration Expense | 2 | | 4 | | |
Depreciation, Depletion and Amortization | 16 | 17 | 35 | 33 | |
Asset Impairments | 0 | | | | |
(Gain) Loss on Commodity Derivative Instruments | 0 | 0 | 0 | 0 | |
Income (Loss) Before Income Taxes | 83 | 65 | 228 | 149 | |
Additions to Long-Lived Assets, Excluding Acquisitions | 13 | 119 | 44 | 251 | |
Additions to Equity Method Investments | 0 | 0 | 0 | | |
Property, Plant and Equipment, Net | 3,058 | | 3,058 | | 3,041 |
West Africa | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 44 | 91 | 116 | 176 | |
Lease Operating Expense | 20 | 10 | 50 | 34 | |
Production and Ad Valorem Taxes | 0 | 0 | 0 | 0 | |
Gathering, Transportation and Processing Expense | 0 | 0 | 0 | 0 | |
Asset Impairments | | | 51 | | |
Total | 20 | 10 | 50 | 34 | |
Exploration Expense | 5 | | 8 | | |
Depreciation, Depletion and Amortization | 22 | 19 | 46 | 39 | |
Asset Impairments | 51 | | | | |
(Gain) Loss on Commodity Derivative Instruments | 9 | (2) | 9 | 22 | |
Income (Loss) Before Income Taxes | (69) | 59 | (59) | 70 | |
Additions to Long-Lived Assets, Excluding Acquisitions | 19 | 12 | 38 | 18 | |
Additions to Equity Method Investments | 0 | 0 | 0 | | |
Property, Plant and Equipment, Net | 737 | | 737 | | 793 |
Other Int'l | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 0 | 0 | 0 | 0 | |
Lease Operating Expense | 0 | 0 | 0 | 0 | |
Production and Ad Valorem Taxes | 0 | 0 | 0 | 0 | |
Gathering, Transportation and Processing Expense | 0 | 0 | 0 | 0 | |
Asset Impairments | | | 0 | | |
Total | 0 | 0 | 0 | 0 | |
Exploration Expense | 3 | | 8 | | |
Depreciation, Depletion and Amortization | 0 | 0 | 0 | 0 | |
Asset Impairments | 0 | | | | |
(Gain) Loss on Commodity Derivative Instruments | 0 | 0 | 0 | 0 | |
Income (Loss) Before Income Taxes | (6) | (15) | (12) | (31) | |
Additions to Long-Lived Assets, Excluding Acquisitions | 2 | 2 | 11 | 12 | |
Additions to Equity Method Investments | 0 | 0 | 0 | | |
Property, Plant and Equipment, Net | 55 | | 55 | | 44 |
Midstream | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 144 | 161 | 362 | 326 | |
Lease Operating Expense | (1) | 1 | 0 | 2 | |
Production and Ad Valorem Taxes | 1 | 1 | 3 | 3 | |
Gathering, Transportation and Processing Expense | 20 | 31 | 41 | 60 | |
Asset Impairments | | | 0 | | |
Total | 20 | 33 | 44 | 65 | |
Exploration Expense | 0 | | 0 | | |
Depreciation, Depletion and Amortization | 26 | 26 | 52 | 51 | |
Asset Impairments | 0 | | | | |
Goodwill Impairment | | | 110 | | |
(Gain) Loss on Commodity Derivative Instruments | 0 | 0 | 0 | 0 | |
Income (Loss) Before Income Taxes | 58 | 46 | 27 | 119 | |
Additions to Long-Lived Assets, Excluding Acquisitions | 5 | 52 | 48 | 118 | |
Additions to Equity Method Investments | 3 | 144 | 155 | | |
Property, Plant and Equipment, Net | 1,721 | | 1,721 | | $ 1,721 |
Midstream | Intersegment Eliminations and Other | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 92 | 91 | 207 | 197 | |
Total Crude Oil, NGL and Natural Gas Sales | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 493 | 954 | 1,387 | 1,891 | |
Total Crude Oil, NGL and Natural Gas Sales | Intersegment Eliminations and Other | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 0 | 0 | 0 | 0 | |
Total Crude Oil, NGL and Natural Gas Sales | Corporate | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 0 | 0 | 0 | 0 | |
Total Crude Oil, NGL and Natural Gas Sales | United States | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 318 | 773 | 932 | 1,522 | |
Total Crude Oil, NGL and Natural Gas Sales | Eastern Mediter-ranean | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 139 | 107 | 330 | 225 | |
Total Crude Oil, NGL and Natural Gas Sales | West Africa | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 36 | 74 | 125 | 144 | |
Total Crude Oil, NGL and Natural Gas Sales | Other Int'l | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 0 | 0 | 0 | 0 | |
Total Crude Oil, NGL and Natural Gas Sales | Midstream | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 0 | 0 | 0 | 0 | |
Crude Oil Sales | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 261 | 688 | 839 | 1,300 | |
Crude Oil Sales | Intersegment Eliminations and Other | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 0 | 0 | 0 | 0 | |
Crude Oil Sales | Corporate | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 0 | 0 | 0 | 0 | |
Crude Oil Sales | United States | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 230 | 617 | 722 | 1,162 | |
Crude Oil Sales | Eastern Mediter-ranean | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 0 | 2 | 1 | 3 | |
Crude Oil Sales | West Africa | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 31 | 69 | 116 | 135 | |
Crude Oil Sales | Other Int'l | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 0 | 0 | 0 | 0 | |
Crude Oil Sales | Midstream | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 0 | 0 | 0 | 0 | |
NGL Sales | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 40 | 84 | 102 | 180 | |
NGL Sales | Intersegment Eliminations and Other | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 0 | 0 | 0 | 0 | |
NGL Sales | Corporate | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 0 | 0 | 0 | 0 | |
NGL Sales | United States | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 40 | 84 | 102 | 180 | |
NGL Sales | Eastern Mediter-ranean | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 0 | 0 | 0 | 0 | |
NGL Sales | West Africa | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 0 | 0 | 0 | 0 | |
NGL Sales | Other Int'l | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 0 | 0 | 0 | 0 | |
NGL Sales | Midstream | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 0 | 0 | 0 | 0 | |
Natural Gas Sales | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 192 | 182 | 446 | 411 | |
Natural Gas Sales | Intersegment Eliminations and Other | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 0 | 0 | 0 | 0 | |
Natural Gas Sales | Corporate | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 0 | 0 | 0 | 0 | |
Natural Gas Sales | United States | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 48 | 72 | 108 | 180 | |
Natural Gas Sales | Eastern Mediter-ranean | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 139 | 105 | 329 | 222 | |
Natural Gas Sales | West Africa | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 5 | 5 | 9 | 9 | |
Natural Gas Sales | Other Int'l | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 0 | 0 | 0 | 0 | |
Natural Gas Sales | Midstream | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 0 | 0 | 0 | 0 | |
Sales of Purchased Oil and Gas | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 49 | 103 | 174 | 177 | |
Other Royalty Expense | 63 | 113 | 202 | 200 | |
Sales of Purchased Oil and Gas | Intersegment Eliminations and Other | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 0 | 0 | 0 | 0 | |
Other Royalty Expense | 0 | 0 | | | |
Sales of Purchased Oil and Gas | Corporate | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 16 | 23 | 33 | 50 | |
Other Royalty Expense | 30 | 37 | | | |
Sales of Purchased Oil and Gas | United States | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 4 | 28 | 29 | 42 | |
Other Royalty Expense | 4 | 28 | | | |
Sales of Purchased Oil and Gas | Eastern Mediter-ranean | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 0 | 0 | 0 | 0 | |
Other Royalty Expense | 0 | 0 | | | |
Sales of Purchased Oil and Gas | West Africa | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 0 | 0 | 0 | 0 | |
Other Royalty Expense | 0 | 0 | | | |
Sales of Purchased Oil and Gas | Other Int'l | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 0 | 0 | 0 | 0 | |
Other Royalty Expense | 0 | 0 | | | |
Sales of Purchased Oil and Gas | Midstream | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 29 | 52 | 112 | 85 | |
Other Royalty Expense | 29 | 48 | | | |
(Loss) Income from Equity Method Investments and Other | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 3 | 16 | (21) | 33 | |
(Loss) Income from Equity Method Investments and Other | Intersegment Eliminations and Other | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 0 | 0 | 0 | 0 | |
(Loss) Income from Equity Method Investments and Other | Corporate | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 0 | 0 | 0 | 0 | |
(Loss) Income from Equity Method Investments and Other | United States | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | (1) | 1 | (1) | 1 | |
(Loss) Income from Equity Method Investments and Other | Eastern Mediter-ranean | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | (1) | 0 | (3) | 0 | |
(Loss) Income from Equity Method Investments and Other | West Africa | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 8 | 17 | (9) | 32 | |
(Loss) Income from Equity Method Investments and Other | Other Int'l | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 0 | 0 | 0 | 0 | |
(Loss) Income from Equity Method Investments and Other | Midstream | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | (3) | (2) | (8) | 0 | |
Midstream Services Revenues – Third Party | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 26 | 20 | 51 | 44 | |
Midstream Services Revenues – Third Party | Intersegment Eliminations and Other | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 0 | 0 | 0 | 0 | |
Midstream Services Revenues – Third Party | Corporate | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 0 | 0 | 0 | 0 | |
Midstream Services Revenues – Third Party | United States | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 0 | 0 | 0 | 0 | |
Midstream Services Revenues – Third Party | Eastern Mediter-ranean | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 0 | 0 | 0 | 0 | |
Midstream Services Revenues – Third Party | West Africa | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 0 | 0 | 0 | 0 | |
Midstream Services Revenues – Third Party | Other Int'l | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 0 | 0 | 0 | 0 | |
Midstream Services Revenues – Third Party | Midstream | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Revenue from sales | 26 | 20 | 51 | 44 | |
Other Royalty Expense | | | | | |
Segment Reporting Information | | | | | |
Other Royalty Expense | 3 | 1 | 7 | 4 | |
Other Royalty Expense | Intersegment Eliminations and Other | | | | | |
Segment Reporting Information | | | | | |
Other Royalty Expense | 0 | 0 | 0 | 0 | |
Other Royalty Expense | Corporate | | | | | |
Segment Reporting Information | | | | | |
Other Royalty Expense | 0 | 0 | 0 | 0 | |
Other Royalty Expense | United States | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Other Royalty Expense | 3 | 1 | 7 | 4 | |
Other Royalty Expense | Eastern Mediter-ranean | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Other Royalty Expense | 0 | 0 | 0 | 0 | |
Other Royalty Expense | West Africa | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Other Royalty Expense | 0 | 0 | 0 | 0 | |
Other Royalty Expense | Other Int'l | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Other Royalty Expense | 0 | 0 | 0 | 0 | |
Other Royalty Expense | Midstream | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Other Royalty Expense | $ 0 | $ 0 | 0 | 0 | |
Cost of Purchased Oil and Gas | | | | | |
Segment Reporting Information | | | | | |
Other Royalty Expense | | | 202 | 200 | |
Cost of Purchased Oil and Gas | Intersegment Eliminations and Other | | | | | |
Segment Reporting Information | | | | | |
Other Royalty Expense | | | 0 | 0 | |
Cost of Purchased Oil and Gas | Corporate | | | | | |
Segment Reporting Information | | | | | |
Other Royalty Expense | | | 61 | 79 | |
Cost of Purchased Oil and Gas | United States | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Other Royalty Expense | | | 32 | 42 | |
Cost of Purchased Oil and Gas | Eastern Mediter-ranean | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Other Royalty Expense | | | 0 | 0 | |
Cost of Purchased Oil and Gas | West Africa | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Other Royalty Expense | | | 0 | 0 | |
Cost of Purchased Oil and Gas | Other Int'l | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Other Royalty Expense | | | 0 | 0 | |
Cost of Purchased Oil and Gas | Midstream | Operating Segments | | | | | |
Segment Reporting Information | | | | | |
Other Royalty Expense | | | $ 109 | $ 79 | |