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Financial Instruments (Schedule of Contingent Payments) (Details) - NJOY Holdings, Inc. [Member] - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2024 | Jun. 30, 2025 | Dec. 31, 2024
Business Combination, Contingent Consideration [Roll Forward] |  |  |
Balance at January 1 |  | $ 20 | $ 130
Change in the fair value of contingent payments |  | 25 | 140
Balance at end of period |  | 45 | $ 20
Menthol Pod [Member] |  |  |
Business Combination, Contingent Consideration [Roll Forward] |  |  |
Payments | $ (250) | $ 0 |

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