Asset Impairment, Exit and Implementation Costs (Pre-tax Asset Impairment, Exit and Implementation Costs) (Details) - USD ($)	3 Months Ended	12 Months Ended
	Jun. 30, 2024	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Restructuring Cost and Reserve [Line Items]
Asset impairment and exit costs		$ 389,000,000	$ 0	$ 0
Implementation Costs		33,000,000
Total		422,000,000	$ 0	$ 0
Skoal [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment charges	$ 354,000,000	354,000,000
Operating Segments [Member] | Smokeable Products [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment and exit costs		31,000,000
Implementation Costs		29,000,000
Total		60,000,000
Operating Segments [Member] | Oral Tobacco Products [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment and exit costs		358,000,000
Implementation Costs		4,000,000
Total		$ 362,000,000