Condensed Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019		Jun. 30, 2018	Dec. 31, 2018	Dec. 31, 2017
Asset impairment and exit costs	$ 23	$ 0	$ 43		$ 0
Cash divested from deconsolidation			1,346	[1]	0
Restricted cash	$ 5	$ 35	5		$ 35	$ 27	$ 29
Marketing Administration And Research Costs [Member]
Deconsolidation amount			239
Cecilia Letourneau & Conseil Quebecois Sur La Tabac Et La Sante and Jean-Yves Blais Cases [Member] | RBH [Member] | Appellate Ruling [Member] | Smoking And Health Class Actions [Member]
Amount of litigation charge			194
Cash [Member]
Cash divested from deconsolidation			1,323
Restricted Cash [Member]
Cash divested from deconsolidation			$ 23

[1] Includes deconsolidation of RBH cash and cash equivalents of $1,323 million and restricted cash of $23 million.