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Investments in Equity Securities (Summary of Investments) (Details) - USD ($)
$ in Millions
Jun. 30, 2024
Dec. 31, 2023
Investments [Line Items]    
Investments $ 8,335 $ 10,011
ABI [Member]    
Investments [Line Items]    
ABI 8,020 9,676
Cronos [Member]    
Investments [Line Items]    
Cronos $ 315 $ 335