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Segment Reporting (Schedule of Pre-tax Tobacco and Health Litigation Charges) (Details) - Tobacco and Health Litigation Cases [Member] - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items] |  |  |
Provision related to litigation recorded | $ 80 | $ 105 | $ 150
Philip Morris USA [Member] | Selling, General and Administrative Expenses [Member] | Smokeable Products [Member] |  |  |
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items] |  |  |
Provision related to litigation recorded | 72 | 88 | 127
Philip Morris USA [Member] | Interest And Other Debt Expense, Net [Member] |  |  |
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items] |  |  |
Provision related to litigation recorded | $ 8 | $ 17 | $ 23

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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://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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