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Income Taxes - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2023 | Dec. 31, 2022
Investments [Line Items] |  |  |  |  |  |
Unrecognized tax benefits | $ 1,233 |  | $ 1,233 |  |  |
Income tax benefit | (742) | $ (183) | (2,123) | $ (1,611) |  |
Unrecognized tax benefits, period increase (decrease) |  |  | 1,164 |  |  |
Unrecognized tax benefits that would impact the effective tax rate | 35 |  | 35 |  |  | $ 44
Unrecognized tax benefits that would impact deferred tax rate | $ 1,198 |  | 1,198 |  |  | $ 25
JUUL [Member] |  |  |  |  |  |
Investments [Line Items] |  |  |  |  |  |
Income tax benefit |  |  | 1,141 |  |  |
Unrecognized tax benefits, period increase (decrease) |  |  | 1,173 |  |  |
Deferred federal income tax benefit |  |  | $ 32 |  |  |
Forecast [Member] | JUUL [Member] |  |  |  |  |  |
Investments [Line Items] |  |  |  |  |  |
Equity securities, FV-NI, ordinary gain (loss), tax basis of investments |  |  |  |  | $ 6,500 |
Unrecognized tax benefits |  |  |  |  | $ 1,600 |

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