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Goodwill and Other Intangible Assets, net (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2022 | Jul. 31, 2023
Loss Contingencies [Line Items] |  |  |  |  |  |
Amortization of intangible assets | $ 42 | $ 19 | $ 87 | $ 54 | $ 73 |
Finite-lived intangible assets, amortization expense, next twelve months | 170 |  | 170 |  |  |
Finite-lived intangible assets, amortization expense, year two | 170 |  | 170 |  |  |
Finite-lived intangible assets, amortization expense, year three | 170 |  | 170 |  |  |
Finite-lived intangible assets, amortization expense, year four | 170 |  | 170 |  |  |
Finite-lived intangible assets, amortization expense, year five | 170 |  | 170 |  |  |
Disposal group, including discontinued operation, interest income | 3 |  | 54 |  |  |
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | IQOS Tobacco Heating System [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Disposal group, purchase agreement, consideration, additional payment |  |  |  |  | $ 1,000 | $ 1,800
Disposal group, deferred gain on sale of rights under an agreement | $ 2,700 |  | $ 2,700 |  |  |
Weighted Average |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Finite-lived intangible asset, useful life | 18 years |  | 18 years |  |  |
UST Inc. [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Indefinite-lived trademarks | $ 8,800 |  | $ 8,800 |  |  |
Middleton [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Indefinite-lived trademarks | $ 2,600 |  | $ 2,600 |  |  |

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