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Consolidated Statements of Operations (Parenthetical) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Income Statement [Abstract] |  |  |
Cost of sales, depreciation, depletion and amortization | $ 3,976 | $ 4,000 | $ 4,266

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- Definition Amount of expense for allocation of cost of tangible and intangible assets over their useful lives directly used in production of good and rendering of service. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(b)(2)) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 + Details
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- References No definition available. + Details
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