Asset Impairment, Exit and Implementation Costs (Pre-tax Asset Impairment, Exit and Implementation Costs) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Restructuring Cost and Reserve [Line Items]
Asset Impairment and Exit Costs	$ 12	$ 1	$ 16	$ 121
Implementation Costs	17	1	40	3
Total	29	2	56	124
Termination and curtailment costs				20
Operating Segments [Member] | Smokeable Products [Member]
Restructuring Cost and Reserve [Line Items]
Asset Impairment and Exit Costs	1	1	2	98
Implementation Costs	7	1	12	3
Total	8	2	14	101
Operating Segments [Member] | Smokeless Products [Member]
Restructuring Cost and Reserve [Line Items]
Asset Impairment and Exit Costs	11	0	14	13
Implementation Costs	10	0	28	0
Total	21	0	42	13
Operating Segments [Member] | All Other [Member]
Restructuring Cost and Reserve [Line Items]
Asset Impairment and Exit Costs			0	5
Implementation Costs			0	0
Total			0	5
General corporate [Member]
Restructuring Cost and Reserve [Line Items]
Asset Impairment and Exit Costs	$ 0	$ 0	0	5
Implementation Costs			0	0
Total			$ 0	$ 5