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Segment Reporting (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Segment Reporting Information [Line Items]                      
Net revenues $ 6,114 $ 6,837 $ 6,305 $ 6,108 $ 6,101 $ 6,729 $ 6,663 $ 6,083 $ 25,364 $ 25,576 $ 25,744
Sales Revenue, Net [Member] | Credit Concentration Risk [Member] | McLane Company Inc [Member]                      
Segment Reporting Information [Line Items]                      
Contribution of net revenues by major customer percentage                 27.00% 26.00% 25.00%
Sales Revenue, Net [Member] | Credit Concentration Risk [Member] | Core-Mark Holding Company, Inc. [Member]                      
Segment Reporting Information [Line Items]                      
Contribution of net revenues by major customer percentage                 14.00% 14.00% 14.00%
Smokeable Products [Member]                      
Segment Reporting Information [Line Items]                      
Net revenues                 $ 22,297 $ 22,636 $ 22,851
Smokeable Products [Member] | Cigarettes [Member]                      
Segment Reporting Information [Line Items]                      
Net revenues                 21,506 21,900 22,199
Smokeable Products [Member] | Cigars [Member]                      
Segment Reporting Information [Line Items]                      
Net revenues                 791 736 652
Wine [Member]                      
Segment Reporting Information [Line Items]                      
Net revenues                 $ 691 $ 698 $ 746
Wine [Member] | Sales Revenue, Net [Member] | Credit Concentration Risk [Member] | Two Distributors [Member]                      
Segment Reporting Information [Line Items]                      
Contribution of net revenues by major customer percentage                 64.00%    
Wine [Member] | Sales Revenue, Net [Member] | Credit Concentration Risk [Member] | Three Distributors [Member]                      
Segment Reporting Information [Line Items]                      
Contribution of net revenues by major customer percentage                   67.00% 69.00%
Smokeless Products [Member]                      
Segment Reporting Information [Line Items]                      
Net revenues                 $ 2,262 $ 2,155 $ 2,051
Operating Segments [Member] | Smokeless Products [Member]                      
Segment Reporting Information [Line Items]                      
Inventory recall expense                   $ 60