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Investments in Equity Securities (Summary of Investments) (Details) - USD ($)
$ in Millions
Sep. 30, 2022
Jun. 30, 2022
Dec. 31, 2021
Investments [Line Items]      
Investments $ 9,814   $ 13,481
ABI [Member]      
Investments [Line Items]      
ABI 9,048   11,144
JUUL [Member]      
Investments [Line Items]      
JUUL 350   1,705
Cronos [Member]      
Investments [Line Items]      
ABI   $ 437  
Cronos 416   632
Common Stock [Member] | Cronos [Member]      
Investments [Line Items]      
ABI $ 415   $ 617