Contingencies (Other Disputes Under the State Settlement Agreements) (Details) $ in Millions	3 Months Ended
Mar. 31, 2018 USD ($)
RJR-Lorillard-ITG Transaction Case [Member]
Loss Contingencies [Line Items]
Payments for legal settlements, incorrect increase	$ 146

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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