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Segment Reporting (Schedule of NPM Adjustment Items) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
NPM Adjustment Items [Line Items] |  |  |
Litigation settlement interest expense (income) | $ 9 | $ 6 | $ 13
Non-Participating Manufacturer Arbitration Panel Decision [Member] |  |  |
NPM Adjustment Items [Line Items] |  |  |
Loss (Gain) Related to Litigation Settlement | 4 | 18 | (84)
Operating Income (Loss) [Member] | Smokeable Products [Member] | Philip Morris USA [Member] | NPM Adjustment to Cost Of Sales [Member] | Non-Participating Manufacturer Arbitration Panel Decision [Member] |  |  |
NPM Adjustment Items [Line Items] |  |  |
Loss (Gain) Related to Litigation Settlement | (5) | 12 | (97)
Interest And Other Debt Expense, Net [Member] | Philip Morris USA [Member] | Non-Participating Manufacturer Arbitration Panel Decision [Member] |  |  |
NPM Adjustment Items [Line Items] |  |  |
Litigation settlement interest expense (income) | $ 9 | $ 6 | $ 13

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- Definition Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349 + Details
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- Definition Interest expense (income) directly attributable to an award in settlement of litigation. + References No definition available. + Details
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