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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, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items]
Provision related to litigation recorded	$ 8	$ 18	$ 43	$ 42
Operating Segments [Member] | Smokeable Products Segment [Member]
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items]
Provision related to litigation recorded	8	17	43	39
Segment Reconciling Items [Member]
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items]
Provision related to litigation recorded	$ 0	$ 1	$ 0	$ 3

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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=121557415&loc=d3e14326-108349

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