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Investments in Unconsolidated Subsidiaries (Narrative) (Details) - USD ($)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2013
Schedule of Equity Method Investments [Line Items]      
Investments in unconsolidated subsidiaries $ 1,011,000,000 $ 890,000,000  
Difference between equity method investment carrying value and book value 867,000,000 806,000,000  
Dividends from unconsolidated subsidiaries $ 117,000,000 127,000,000  
Minimum [Member]      
Schedule of Equity Method Investments [Line Items]      
Difference between equity method investment carrying value and book value, amortization period 3 years    
Maximum [Member]      
Schedule of Equity Method Investments [Line Items]      
Difference between equity method investment carrying value and book value, amortization period 20 years    
Equity Method Investment Goodwill [Member]      
Schedule of Equity Method Investments [Line Items]      
Investments in unconsolidated subsidiaries $ 810,000,000 $ 744,000,000  
EITA [Member]      
Schedule of Equity Method Investments [Line Items]      
Ownership percentage 49.00%    
STAEM [Member]      
Schedule of Equity Method Investments [Line Items]      
Ownership percentage 25.00%    
EITA Ownership Percentage in Société des Tabacs Algéro-Emiratie (“STAEM”) [Member] | Corporate Joint Venture [Member]      
Schedule of Equity Method Investments [Line Items]      
Ownership percentage 51.00%    
Societe Nationale des Tabacs et Allumettes SpA Ownership Percentage in Société des Tabacs Algéro-Emiratie (“STAEM”) [Member] | Corporate Joint Venture [Member]      
Schedule of Equity Method Investments [Line Items]      
Ownership percentage 49.00%    
Megapolis [Member]      
Schedule of Equity Method Investments [Line Items]      
Ownership percentage     20.00%
Purchase price of Equity Method Investments     $ 760,000,000
Additional contingent consideration (up to $100 million)     $ 100,000,000
Additional contingent consideration measurement period     4 years
Notes receivable to unconsolidated subsidiaries     $ 100,000,000
Discounted liability     $ 86,000,000
Contingent consideration due to equity method investee $ 100,000,000