Contingencies (Class Actions, Health Care Cost Recovery Actions, and Upcoming Trials) (Details)	Sep. 30, 2020 case defendant
Parsons v. AC & S Inc.
Loss Contingencies [Line Items]
Number of defendants in bankruptcy \| defendant	3
Individual Actions Cases
Loss Contingencies [Line Items]
Cases pending	70
Pending claims scheduled for trial	3
Engle Progeny Cases
Loss Contingencies [Line Items]
Pending claims scheduled for trial	1
Liggett
Loss Contingencies [Line Items]
Cases pending	2
Liggett \| Class Actions
Loss Contingencies [Line Items]
Cases pending	2
Liggett \| Crow Creek Sioux Tribe v. American Tobacco Company
Loss Contingencies [Line Items]
Cases pending	1

Number of pending claims pertaining to a loss contingency.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14435-108349

Name:	us-gaap_LossContingencyPendingClaimsNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant