Asset Impairment, Exit and Implementation Costs (Pre-tax Asset Impairment, Exit and Implementation Costs) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Restructuring Cost and Reserve [Line Items]
Asset Impairment and Exit Costs	$ (4)	$ 159	$ 383
Implementation Costs	411	28	67
Total	407	187	450
Plus amounts included in net periodic benefit (income) cost, excluding service cost, asset impairment and exit costs	0	29	3
Plus amounts included in net periodic benefit (income) cost, excluding service cost, implementation costs	0	0	0
Plus amounts included in net periodic benefit (income) cost, excluding service cost, total	0	29	3
Total, Asset Impairment and Exit Costs	(4)	188	386
Total, Implementation Costs	411	28	67
Total	407	216	453
Operating Segments [Member] | Smokeable Products [Member]
Restructuring Cost and Reserve [Line Items]
Asset Impairment and Exit Costs	2	59	79
Implementation Costs	0	33	1
Total	2	92	80
Operating Segments [Member] | Oral Tobacco Products [Member]
Restructuring Cost and Reserve [Line Items]
Asset Impairment and Exit Costs	(5)	9	20
Implementation Costs	0	5	3
Total	(5)	14	23
Operating Segments [Member] | Wine [Member]
Restructuring Cost and Reserve [Line Items]
Asset Impairment and Exit Costs	0	76	54
Implementation Costs	411	0	0
Total	411	76	54
Operating Segments [Member] | All Other [Member]
Restructuring Cost and Reserve [Line Items]
Asset Impairment and Exit Costs	0	14	227
Implementation Costs	0	(10)	63
Total	0	4	290
General Corporate [Member]
Restructuring Cost and Reserve [Line Items]
Asset Impairment and Exit Costs	(1)	1	3
Implementation Costs	0	0	0
Total	(1)	1	3
Total, Asset Impairment and Exit Costs	$ (1)	1	$ 0
Cost of Sales [Member]
Restructuring Cost and Reserve [Line Items]
Implementation Costs		2
Marketing Administration And Research Costs [Member]
Restructuring Cost and Reserve [Line Items]
Implementation Costs		$ 26