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Goodwill and Other Intangible Assets, net (Narrative) (Details) | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2024 USD ($) | Jun. 30, 2023 USD ($) | Jun. 30, 2024 USD ($) | Jun. 30, 2023 USD ($) | Dec. 31, 2023 USD ($) | Apr. 30, 2024 USD ($) | Oct. 01, 2023 | Sep. 30, 2023 USD ($) | Jul. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Amortization of intangible assets | $ 37,000,000 | $ 27,000,000 | $ 64,000,000 | $ 45,000,000 | $ 128,000,000 |  |  |  |  |
Finite-lived intangible assets, amortization expense, next twelve months | 150,000,000 |  | 150,000,000 |  |  |  |  |  |  |
Finite-lived intangible assets, amortization expense, year two | 150,000,000 |  | 150,000,000 |  |  |  |  |  |  |
Finite-lived intangible assets, amortization expense, year three | 150,000,000 |  | 150,000,000 |  |  |  |  |  |  |
Finite-lived intangible assets, amortization expense, year four | 150,000,000 |  | 150,000,000 |  |  |  |  |  |  |
Finite-lived intangible assets, amortization expense, year five | 150,000,000 |  | 150,000,000 |  |  |  |  |  |  |
Asset impairment | 354,000,000 | $ 0 | 354,000,000 | $ 0 |  |  |  |  |  |
Carrying value | 13,048,000,000 |  | 13,048,000,000 |  | 13,686,000,000 |  |  |  |  | $ 12,384,000,000
Goodwill, accumulated impairment loss | 0 |  | 0 |  | 0 |  |  |  |  |
Skoal [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Indefinite-lived trademarks |  |  |  |  | $ 3,900,000,000 |  |  |  |  |
Percentage exceeded over carrying value |  |  |  |  | 6.00% |  |  |  |  |
Amount over carrying value |  |  |  |  | $ 200,000,000 |  |  |  |  |
Asset impairment | 354,000,000 |  | 354,000,000 |  |  |  |  |  |  |
Carrying value | $ 3,600,000,000 |  | $ 3,600,000,000 |  |  |  |  |  |  |
Skoal [Member] | Measurement Input, Perpetual Growth Rate [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Measurement input | 0 |  | 0 |  |  |  | 0.01 |  |  |
Skoal [Member] | Measurement Input, Discount Rate [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Measurement input | 0.115 |  | 0.115 |  |  |  | 0.110 |  |  |
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 |  |  |  |  |  | $ 2,800,000,000 |  | $ 1,800,000,000 | $ 1,800,000,000 | $ 1,000,000,000.0
Disposal group, deferred gain on disposal |  |  |  |  | $ 2,700,000,000 |  |  |  |  |
Disposal group, gain (loss) on disposal | $ 2,700,000,000 |  | $ 2,700,000,000 |  |  |  |  |  |  |
Weighted Average |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Finite-lived intangible asset, useful life | 19 years |  | 19 years |  |  |  |  |  |  |
MST and snus [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Indefinite-lived trademarks | $ 8,500,000,000 |  | $ 8,500,000,000 |  |  |  |  |  |  |
MST and snus [Member] | Copenhagen [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Indefinite-lived trademarks | 4,000,000,000.0 |  | 4,000,000,000.0 |  |  |  |  |  |  |
MST and snus [Member] | Skoal [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Indefinite-lived trademarks | 3,600,000,000 |  | 3,600,000,000 |  |  |  |  |  |  |
MST and snus [Member] | Other [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Indefinite-lived trademarks | 900,000,000 |  | 900,000,000 |  |  |  |  |  |  |
Middleton [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Indefinite-lived trademarks | $ 2,600,000,000 |  | $ 2,600,000,000 |  |  |  |  |  |  |

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