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Segment Reporting Schedule of Tobacco and Health Litigation Items (Details) - PM USA [Member] - Tobacco and Health Litigation Cases [Member] - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items] |  |  |  |
Provision related to litigation recorded | $ 21 | $ 0 | $ 119 | $ 18
Operating Income (Loss) [Member] | Operating Segments [Member] | Smokeable Products [Member] |  |  |  |
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items] |  |  |  |
Provision related to litigation recorded | 10 | 0 | 94 | 16
Operating Income (Loss) [Member] | Operating Segments [Member] | Smokeless Products [Member] |  |  |  |
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items] |  |  |  |
Provision related to litigation recorded | 10 | 0 | 10 | 0
Interest And Other Debt Expense, Net [Member] | Segment Reconciling Items [Member] |  |  |  |
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items] |  |  |  |
Provision related to litigation recorded | $ 1 | $ 0 | $ 15 | $ 2

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- Definition [Line Items] for Schedule of Pre-tax Tobacco and Health Litigation Charges [Table] + References No definition available. + Details
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- Definition Amount charged against operating income increasing loss contingency liability, after adjustments to reduce previously estimated charges. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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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