v3.6.0.2

Accounting For Certain Long-Lived Assets (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Schedule of Impaired Long-Lived Assets Held and Used [Line Items] |  |  |
Proved oil and gas properties, other property, plant and equipment and other assets carrying amount | $ 667 | $ 9,154 |
Amortization and impairments of unproved oil and gas property costs including amortization of capitalized interest | 291 | 288 | $ 168
Proved oil and gas properties, other property, plant and equipment, and other assets written down to fair value | 537 | 2,828 |
Pretax impairment charges for proved oil and gas properties, other property, plant and equipment and other assets | $ 130 | 6,326 |
Net of tax impairment charges for proved oil and gas properties, other property, plant and equipment and other assets |  | $ 4,141 |

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- Definition Amortization and impairments of unproved oil and gas property costs including amortization of capitalized interest + References No definition available. + Details
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- Definition Net of tax impairment charge for proved oil and gas properties, other property, plant and equipment and other assets + References No definition available. + Details
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- Definition Pretax impairment charges for proved oil and gas properties, other property, plant and equipment and other assets + References No definition available. + Details
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- Definition Proved oil and gas properties, other property, plant and equipment, and other assets written down to fair value + References No definition available. + Details
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- References No definition available. + Details
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- Definition The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 225 -Section 45 -Paragraph 11 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=68048823&loc=d3e92212-112881 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Impairment -URI http://asc.fasb.org/extlink&oid=6515133 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=64862545&loc=d3e2921-110230 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2420-110228 + Details
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