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Other Financial Information - Property, Plant and Equipment (Details) - USD ($) | Dec. 31, 2019 | Dec. 31, 2018
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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

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- 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 360 -URI http://asc.fasb.org/subtopic&trid=2145654 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
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- Definition Capitalized costs of unproved properties incurred for any combination mineral interests acquisitions and other costs not previously disclosed within this table. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -URI http://asc.fasb.org/topic&trid=2145477 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
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