Segment Reporting (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2023	Sep. 30, 2023	Sep. 30, 2022
Smokeable Products Segment [Member] \| Operating Segments [Member] \| Non-Participating Manufacturer Arbitration Panel Decision [Member] \| Operating Income (Loss) [Member] \| NPM Adjustment to Cost Of Sales [Member] \| PM USA [Member]
Segment Reporting Information [Line Items]
Gain (loss) related to litigation settlement	$ 15	$ 15	$ 60

Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483076/450-20-50-1

Name:	us-gaap_GainLossRelatedToLitigationSettlement
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration