Contingencies (Schedule of Pending Cases) (Details)		1 Months Ended
	Jul. 24, 2020 case	Mar. 31, 2018 case	Jul. 24, 2020 state	Jul. 24, 2020 claim	Jul. 24, 2020 lawsuit	Jul. 26, 2019 case	Jul. 23, 2018 case
Individual Smoking and Health Cases [Member]
Loss Contingencies [Line Items]
Number of cases pending						90	97
ETS Smoking and Health Case, Flight Attendants [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Number of claims dismissed		923
Health Care Cost Recovery Actions [Member]
Loss Contingencies [Line Items]
Number of cases pending						1	1
E-vapor Litigation [Member]
Loss Contingencies [Line Items]
Number of cases pending
Other Tabacco-Related Cases [Member]
Loss Contingencies [Line Items]
Number of cases pending						4	6
Subsequent Event [Member]
Loss Contingencies [Line Items]
Loss contingency, class action lawsuit | lawsuit					14
Subsequent Event [Member] | Individual Smoking and Health Cases [Member]
Loss Contingencies [Line Items]
Number of cases pending	116
Subsequent Event [Member] | Individual Smoking and Health Cases [Member] | Pending Litigation [Member] | Massachusetts [Member]
Loss Contingencies [Line Items]
Number of cases pending	24
Subsequent Event [Member] | Individual Smoking and Health Cases [Member] | Pending Litigation [Member] | Florida [Member]
Loss Contingencies [Line Items]
Number of cases pending	49
Subsequent Event [Member] | ETS Smoking and Health Case, Flight Attendants [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Number of cases	1,471
Subsequent Event [Member] | Health Care Cost Recovery Actions [Member]
Loss Contingencies [Line Items]
Number of cases pending	0
Subsequent Event [Member] | E-vapor Litigation [Member]
Loss Contingencies [Line Items]
Number of cases pending	621
Loss contingency, class action lawsuit | lawsuit					25
Number of cases set for trial | claim				0
Subsequent Event [Member] | E-vapor Litigation [Member] | Pending Individual Lawsuits [Member]
Loss Contingencies [Line Items]
Number of cases pending | claim				561
Subsequent Event [Member] | E-vapor Litigation [Member] | Pending Lawsuits Filed By State Or Local Governments [Member]
Loss Contingencies [Line Items]
Number of cases pending			24	14
Subsequent Event [Member] | E-vapor Litigation [Member] | Pending Lawsuit Filed By School District [Member]
Loss Contingencies [Line Items]
Number of cases pending | claim				11
Subsequent Event [Member] | Other Tabacco-Related Cases [Member]
Loss Contingencies [Line Items]
Number of cases pending	4
Loss contingency, number of inactive cases	2
Loss contingency, number of cases tried in a single proceeding	1
Loss contingency, number of inactive class action lawsuits	2