Contingencies (Schedule of Pending Cases) (Details) $ in Millions		3 Months Ended			6 Months Ended		12 Months Ended
	Jul. 29, 2024 claim case lawsuit	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Dec. 31, 2021 USD ($)	Mar. 31, 2024 USD ($)	Jul. 27, 2023 claim	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Jul. 25, 2022 claim
Loss Contingencies [Line Items]
Pre-tax charge | $		$ 151	$ 346	$ 381	$ 151	$ 381		$ 364		$ 171	$ 71
Payments | $		(257)		(80)	(263)	(91)
Loss contingency accrual, provision | $							$ 90
Tobacco and Health Judgment [Member] | Tobacco and Health and Certain Other Litigation [Member]
Loss Contingencies [Line Items]
Loss contingency accrual, provision | $		20		40	38	52
Agreement To Resolve Shareholder Class Action | Tobacco and Health and Certain Other Litigation [Member]
Loss Contingencies [Line Items]
Loss contingency accrual, provision | $		$ 0		$ 0	$ 0	$ 98
Individual Smoking and Health Cases [Member]
Loss Contingencies [Line Items]
Number of cases pending									171			162
Health Care Cost Recovery Actions [Member]
Loss Contingencies [Line Items]
Number of cases pending									1			1
E-vapor Litigation [Member]
Loss Contingencies [Line Items]
Loss contingency accrual, provision | $			$ 10
Number of cases pending									5,326			4,030
Other Tabacco-Related Cases [Member]
Loss Contingencies [Line Items]
Number of cases pending									3			3
Subsequent Event [Member]
Loss Contingencies [Line Items]
Loss contingency, class action lawsuit | lawsuit	17
Subsequent Event [Member] | Opted Out of Settlement [Member]
Loss Contingencies [Line Items]
Number of cases	21
Subsequent Event [Member] | Individual Smoking and Health Cases [Member]
Loss Contingencies [Line Items]
Number of cases pending	177
Subsequent Event [Member] | Individual Smoking and Health Cases [Member] | Pending Litigation [Member] | Illinois [Member]
Loss Contingencies [Line Items]
Number of cases pending	23
Subsequent Event [Member] | Individual Smoking and Health Cases [Member] | Pending Litigation [Member] | New Mexico [Member]
Loss Contingencies [Line Items]
Number of cases pending	15
Subsequent Event [Member] | Individual Smoking and Health Cases [Member] | Pending Litigation [Member] | Massachusetts [Member]
Loss Contingencies [Line Items]
Number of cases pending	73
Subsequent Event [Member] | Individual Smoking and Health Cases [Member] | Pending Litigation [Member] | Oregon [Member]
Loss Contingencies [Line Items]
Number of cases pending	11
Subsequent Event [Member] | Individual Smoking and Health Cases [Member] | Pending Litigation [Member] | Hawaii [Member]
Loss Contingencies [Line Items]
Number of cases pending	3
Subsequent Event [Member] | Individual Smoking and Health Cases [Member] | Pending Litigation [Member] | Florida [Member]
Loss Contingencies [Line Items]
Number of cases pending	29
Subsequent Event [Member] | ETS Smoking and Health Case, Flight Attendants [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Number of cases | case	664
Subsequent Event [Member] | Health Care Cost Recovery Actions [Member]
Loss Contingencies [Line Items]
Number of cases pending	1
Subsequent Event [Member] | E-vapor Litigation [Member]
Loss Contingencies [Line Items]
Number of cases pending	81
Loss contingency, class action lawsuit | lawsuit	21
Subsequent Event [Member] | E-vapor Litigation [Member] | Canada [Member]
Loss Contingencies [Line Items]
Number of cases pending	3
Loss contingency, class action lawsuit | lawsuit	3
Subsequent Event [Member] | E-vapor Litigation [Member] | Participating in Settlement but Pending Dismissal
Loss Contingencies [Line Items]
Loss contingency, class action lawsuit | lawsuit	18
Subsequent Event [Member] | E-vapor Litigation [Member] | Pending Individual Lawsuits [Member]
Loss Contingencies [Line Items]
Number of cases pending	1
Subsequent Event [Member] | E-vapor Litigation [Member] | Subject to Separate Settlement [Member]
Loss Contingencies [Line Items]
Number of cases	38
Subsequent Event [Member] | Other Tabacco-Related Cases [Member]
Loss Contingencies [Line Items]
Number of cases pending	3
Loss contingency, number of inactive cases | case	1
Loss contingency, number of inactive class action lawsuits | case	2