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Investments in Equity Securities (Investment in Cronos Narrative) (Details) - Cronos [Member]
$ / shares in Units, shares in Thousands, $ in Millions, $ in Billions
3 Months Ended 6 Months Ended
Jul. 25, 2022
USD ($)
Jun. 30, 2022
USD ($)
shares
Jun. 30, 2022
USD ($)
shares
Jun. 30, 2022
CAD ($)
Jun. 30, 2022
$ / shares
Mar. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Investments [Line Items]              
Ownership percentage   41.40% 41.40%        
Number of ordinary shares owned (approximately) (in shares) | shares   156,600 156,600        
Fair value of equity investment   $ 437 $ 437       $ 617
Equity method investments   $ 437 $ 437        
Equity method investment, difference between carrying amount and fair value           $ 55  
Equity method investment, difference between carrying amount and fair value, percentage (approximately)   20.00% 20.00%     10.00%  
Impairment of JUUL equity securities   $ 107 $ 107        
Equity Contract, Preemptive Rights [Member]              
Investments [Line Items]              
Equity method investment, shares purchased, (CAD per share) | $ / shares         $ 16.25    
Equity method investment, number of shares eligible for purchase (approximately) (in shares) | shares   11,000 11,000        
Equity method investment, aggregate exercise price       $ 0.2      
Equity Contract, Preemptive Rights [Member] | Subsequent Event [Member]              
Investments [Line Items]              
Equity method investment, aggregate exercise price $ 100            
Equity Contract, Warrant [Member]              
Investments [Line Items]              
Equity method investment, shares purchased, (CAD per share) | $ / shares         $ 19.00    
Equity method investment, number of shares eligible for purchase (approximately) (in shares) | shares   84,000 84,000        
Equity method investment, percentage of shares eligible for purchase (approximately)   10.00% 10.00%        
Equity method investment, aggregate exercise price       $ 1.6      
Equity Contract, Warrant [Member] | Subsequent Event [Member]              
Investments [Line Items]              
Equity method investment, aggregate exercise price $ 1,200            
Equity Contract, Warrant And Equity Contract, Preemptive Rights [Member]              
Investments [Line Items]              
Equity method investment, warrant exercised, ownership percentage     52.00% 52.00%      
Common Stock [Member]              
Investments [Line Items]              
Equity method investments   $ 437 $ 437       $ 617