Segment Reporting (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Schedule of Pre-tax Tobacco and Health Litigation Items [Line Items]
Loss Contingency Accrual, Provision	$ 43	$ 4
Engle Progeny Cases, Federal [Member]
Schedule of Pre-tax Tobacco and Health Litigation Items [Line Items]
Loss Contingency Accrual, Provision	43	0
Engle Progeny Cases, Federal [Member] | Florida Engle [Member]
Schedule of Pre-tax Tobacco and Health Litigation Items [Line Items]
Federal Engle Cases Resolved	415
Engle Progeny Cases, Federal [Member] | Florida Engle [Member] | PM USA [Member]
Schedule of Pre-tax Tobacco and Health Litigation Items [Line Items]
Loss Contingency Accrual, Provision	$ 43