Asset Impairment, Exit and Implementation Costs (Pre-tax Asset Impairment, Exit and Implementation Costs) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Restructuring Cost and Reserve [Line Items]
Asset Impairment and Exit Costs	$ 159	$ 383	$ 32
Implementation Costs	28	67	45
Total	187	450	77
Plus amounts included in net periodic benefit (income) cost, excluding service cost, asset impairment and exit costs	29	3	1
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	29	3	1
Total, Asset Impairment and Exit Costs	188	386	33
Total, Implementation Costs	28	67	45
Total	216	453	78
Operating Segments [Member] | Smokeable Products [Member]
Restructuring Cost and Reserve [Line Items]
Asset Impairment and Exit Costs	59	79	4
Implementation Costs	33	1	17
Total	92	80	21
Operating Segments [Member] | Smokeless Products [Member]
Restructuring Cost and Reserve [Line Items]
Asset Impairment and Exit Costs	9	20	28
Implementation Costs	5	3	28
Total	14	23	56
Operating Segments [Member] | Wine [Member]
Restructuring Cost and Reserve [Line Items]
Asset Impairment and Exit Costs	76	54	0
Implementation Costs	0	0	0
Total	76	54	0
Operating Segments [Member] | All Other [Member]
Restructuring Cost and Reserve [Line Items]
Asset Impairment and Exit Costs	14	227	0
Implementation Costs	(10)	63	0
Total	4	290	0
General Corporate [Member]
Restructuring Cost and Reserve [Line Items]
Asset Impairment and Exit Costs	1	3	0
Implementation Costs	0	0	0
Total	1	3	0
Total, Asset Impairment and Exit Costs	1	$ 0	$ 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