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Segment Reporting (Schedule of Tobacco and Health Litigation Items) (Details) - Tobacco and Health Litigation Cases [Member] - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Segment Reconciling Items [Member] |  |  |  |
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items] |  |  |  |
Provision related to litigation recorded | $ 0 | $ 0 | $ 3 | $ 5
PM USA [Member] |  |  |  |
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items] |  |  |  |
Provision related to litigation recorded | 34 | 3 | 76 | 48
PM USA [Member] | Operating Segments [Member] | Smokeable Products Segment [Member] |  |  |  |
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items] |  |  |  |
Provision related to litigation recorded | $ 34 | $ 3 | $ 73 | $ 43

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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=121557415&loc=d3e14326-108349 + Details
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