Asset Impairment, Exit and Implementation Costs (Pre-tax Asset Impairment, Exit and Implementation Costs) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Restructuring Cost and Reserve [Line Items]
Asset impairment and exit costs	$ 0	$ 40
Plus amounts included in net periodic benefit income, excluding service cost, Asset Impairment and Exit Costs		12
Asset Impairment and Exit Costs		52
Total, Implementation Costs	392	9
Plus amounts included in net period benefit income, excluding service cost, Implementation Costs	0	0
Implementation Costs	392	9
Total restructuring	392	49
Plus amounts included in net periodic benefit income, excluding service cost, Total	0	12
Total	392	61
Operating Segments [Member] | Smokeable Products Segment [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment and exit costs		36
Total, Implementation Costs	0	8
Total restructuring	0	44
Operating Segments [Member] | Oral Tobacco Segment [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment and exit costs		8
Total, Implementation Costs	0	1
Total restructuring	0	9
Operating Segments [Member] | Wine Segment [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment and exit costs		0
Total, Implementation Costs	392	0
Total restructuring	392	0
Operating Segments [Member] | All Other [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment and exit costs		(5)
Total, Implementation Costs	0	0
Total restructuring	0	(5)
Corporate, Non-Segment [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment and exit costs		1
Asset Impairment and Exit Costs	0	1
Total, Implementation Costs	0	0
Total restructuring	$ 0	$ 1