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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
	Mar. 31, 2021	Mar. 31, 2020
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items]
Provision related to litigation recorded	$ 35	$ 24
Segment Reconciling Items [Member] | Interest and other debt expense, net [Member]
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items]
Provision related to litigation recorded	0	2
PM USA [Member] | Operating Segments [Member] | Smokeable Products Segment [Member] | Operating Income (Loss) [Member]
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items]
Provision related to litigation recorded	$ 35	$ 22

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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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