Goodwill and Other Intangible Assets, net (Schedule of Goodwill and Other Intangible Assets by Segment) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018	Dec. 31, 2017
Goodwill [Line Items]
Goodwill	$ 5,262	$ 5,196	$ 5,307
Other Intangible Assets, net	12,688	12,279	$ 12,400
Smokeable Products [Member]
Goodwill [Line Items]
Goodwill	99	99
Other Intangible Assets, net	3,077	3,037
Smokeless Products [Member]
Goodwill [Line Items]
Goodwill	5,089	5,023
Other Intangible Assets, net	9,189	8,825
Wine [Member]
Goodwill [Line Items]
Goodwill	74	74
Other Intangible Assets, net	238	239
All Other [Member]
Goodwill [Line Items]
Goodwill	0	0
Other Intangible Assets, net	$ 184	$ 178