Contingencies (Health Care Cost Recovery Litigation) (Details) $ in Millions	1 Months Ended	3 Months Ended	12 Months Ended
	Nov. 30, 1998 USD ($) state	Dec. 31, 2021 USD ($) claim	Dec. 31, 2023 USD ($) claim manufacture case	Dec. 31, 2022 USD ($) claim	Dec. 31, 2021 USD ($) claim	Mar. 31, 2019 manufacture
Loss Contingencies [Line Items]
Litigation settlement		$ 90
Health Care Cost Recovery Actions [Member]
Loss Contingencies [Line Items]
Number of cases pending | claim		1	1	1	1
Number of states with settled litigation | state	46
State settlement agreements annual payments	$ 10,400
State settlement agreements attorney fees annual cap	$ 500
Litigation settlement			$ 3,700	$ 3,900	$ 4,300
Canada [Member] | Smoking and Health Class Actions and Aggregated Claims Litigation [Member] | Canadian Tobacco Manufacturers [Member]
Loss Contingencies [Line Items]
Number of manufacturers | manufacture			3			3
Threatened Litigation [Member] | Canada [Member] | Health Care Cost Recovery Actions [Member]
Loss Contingencies [Line Items]
Number of cases pending | case			10