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Segment Reporting (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2024
Jun. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Segment Reporting Information [Line Items]          
Asset impairment $ 0   $ 0 $ 354 $ 0
Skoal [Member]          
Segment Reporting Information [Line Items]          
Asset impairment   $ 354   354  
All Other [Member]          
Segment Reporting Information [Line Items]          
Research and development expense $ 61     $ 165  
Smokeable Products Segment [Member]          
Segment Reporting Information [Line Items]          
Research and development expense     $ 51   $ 149