Other Financial Information - Property, Plant and Equipment (Details) - USD ($) |
Dec. 31, 2019 |
Dec. 31, 2018 |
|---|---|---|
| Properties, Plants And Equipment | ||
| Proved properties | $ 88,284,000,000 | $ 100,657,000,000 |
| Unproved properties | 3,980,000,000 | 4,662,000,000 |
| Other | 5,482,000,000 | 5,278,000,000 |
| Gross properties, plants and equipment | 97,746,000,000 | 110,597,000,000 |
| Accumulated depreciation | (55,477,000,000) | (64,899,000,000) |
| Properties, plants and equipment, net | $ 42,269,000,000 | $ 45,698,000,000 |
| X | ||||||||||
- Definition Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Capitalized costs of proved properties incurred for any combination mineral interests acquisitions; wells and related equipment; support equipment and facilities; and uncompleted wells and equipment and other costs not previously disclosed within this table. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Capitalized costs of unproved properties incurred for any combination mineral interests acquisitions and other costs not previously disclosed within this table. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount before accumulated depreciation, depletion and amortization of other physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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