Contingencies (Health Care Cost Recovery Litigation) (Details)	1 Months Ended		3 Months Ended		6 Months Ended
	Mar. 31, 2022 USD ($)	Nov. 30, 1998 USD ($) state	Jun. 30, 2024 USD ($) claim court manufacturer	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) claim court manufacturer	Jun. 30, 2023 USD ($)	Jul. 27, 2023 claim	Jul. 25, 2022 claim	Mar. 31, 2019 manufacturer
Loss Contingencies [Line Items]
Litigation settlement	$ 90,000,000
Health Care Cost Recovery Actions [Member]
Loss Contingencies [Line Items]
Number of federal courts | court			9		9
Number of state courts | court			8		8
Number of cases pending | claim							1	1
Number of states with settled litigation | state		46
State settlement agreements annual payments		$ 10,400,000,000
State settlement agreements attorney fees annual cap		$ 500,000,000
Litigation settlement			$ 900,000,000	$ 1,000,000,000.0	$ 1,800,000,000	$ 1,900,000,000
Threatened Litigation [Member] | Canada [Member] | Health Care Cost Recovery Actions [Member]
Loss Contingencies [Line Items]
Number of cases pending | claim			10		10
Canadian Tobacco Manufacturers [Member] | Canada [Member] | Smoking and Health Class Actions and Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Number of manufacturers | manufacturer			3		3				3