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Contingencies (Schedule of Pending Cases) (Details) $ in Millions		3 Months Ended			6 Months Ended
	Jul. 28, 2025 claim lawsuit case	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	Mar. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Jul. 29, 2024 claim	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Jul. 27, 2023 claim
Loss Contingencies [Line Items]
Pre-tax charge \| $		$ 95	$ 151		$ 95	$ 151	$ 118	$ 96		$ 364	$ 346
Payments \| $		(28)	(257)		(46)	(263)
Tobacco and Health Judgment [Member] \| Tobacco and Health and Certain Other Litigation [Member]
Loss Contingencies [Line Items]
Loss contingency accrual, provision \| $		4	20		40	38
Shareholder derivative lawsuits [Member] \| Tobacco and Health and Certain Other Litigation [Member]
Loss Contingencies [Line Items]
Loss contingency accrual, provision \| $		$ 0	$ 0		$ 0	$ 0
Individual Smoking and Health Cases [Member]
Loss Contingencies [Line Items]
Number of cases pending									177			171
Health Care Cost Recovery Actions [Member]
Loss Contingencies [Line Items]
Number of cases pending									1			1
E-vapor Cases [Member]
Loss Contingencies [Line Items]
Loss contingency accrual, provision \| $				$ 10
Number of cases pending									81			5,326
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	20
Subsequent Event [Member] \| Individual Smoking and Health Cases [Member]
Loss Contingencies [Line Items]
Number of cases pending	195
Subsequent Event [Member] \| Individual Smoking and Health Cases [Member] \| Pending Litigation [Member] \| Illinois [Member]
Loss Contingencies [Line Items]
Number of cases pending	30
Subsequent Event [Member] \| Individual Smoking and Health Cases [Member] \| Pending Litigation [Member] \| New Mexico [Member]
Loss Contingencies [Line Items]
Number of cases pending	16
Subsequent Event [Member] \| Individual Smoking and Health Cases [Member] \| Pending Litigation [Member] \| Massachusetts [Member]
Loss Contingencies [Line Items]
Number of cases pending	90
Subsequent Event [Member] \| Individual Smoking and Health Cases [Member] \| Pending Litigation [Member] \| Oregon [Member]
Loss Contingencies [Line Items]
Number of cases pending	14
Subsequent Event [Member] \| Individual Smoking and Health Cases [Member] \| Pending Litigation [Member] \| Hawaii [Member]
Loss Contingencies [Line Items]
Number of cases pending	6
Subsequent Event [Member] \| Individual Smoking and Health Cases [Member] \| Pending Litigation [Member] \| Florida [Member]
Loss Contingencies [Line Items]
Number of cases pending	15
Subsequent Event [Member] \| ETS Smoking and Health Case, Flight Attendants [Member] \| Pending Litigation [Member]
Loss Contingencies [Line Items]
Number of cases \| case	3
Subsequent Event [Member] \| Health Care Cost Recovery Actions [Member]
Loss Contingencies [Line Items]
Number of cases pending	1
Subsequent Event [Member] \| E-vapor Cases [Member]
Loss Contingencies [Line Items]
Number of cases pending	24
Subsequent Event [Member] \| E-vapor Cases [Member] \| Canada [Member]
Loss Contingencies [Line Items]
Number of cases pending	3
Loss contingency, class action lawsuit \| lawsuit	3
Subsequent Event [Member] \| E-vapor Cases [Member] \| Pending Individual Lawsuits [Member]
Loss Contingencies [Line Items]
Number of cases pending	1
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