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, 2025	Dec. 31, 2024	Dec. 31, 2023
Restructuring Cost and Reserve [Line Items]
Exit Costs		$ 8,000,000	$ 35,000,000
Implementation Costs		48,000,000	33,000,000
Total		56,000,000	68,000,000	$ 0
Asset impairment charges		2,128,000,000
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]
Exit Costs		7,000,000	31,000,000
Implementation Costs		42,000,000	29,000,000
Total		49,000,000	60,000,000
Operating Segments [Member] | Oral Tobacco Products [Member]
Restructuring Cost and Reserve [Line Items]
Exit Costs		1,000,000	4,000,000
Implementation Costs		6,000,000	4,000,000
Total		$ 7,000,000	$ 8,000,000