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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		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items]
Provision related to litigation recorded	$ 70	$ 17	$ 98	$ 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	60	15	84	16
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	$ 10	$ 2	$ 14	$ 2

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[Line Items] for Schedule of Pre-tax Tobacco and Health Litigation Charges [Table]

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Amount charged against operating income increasing loss contingency liability, after adjustments to reduce previously estimated charges.

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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

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