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Income Taxes (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Dec. 31, 2018
Investment [Line Items] |  |  |  |  |
Income tax rate | (22.30%) | 25.50% | 74.10% | 25.10% |
Effective income tax rate reconciliation adjustments to tax accruals |  |  | $ 91 |  |
Unrecognized tax benefits | $ 50 |  | 50 |  | $ 85
Unrecognized tax benefits that would impact the effective tax rate | 43 |  | 43 |  | 59
Possible decrease in unrecognized tax benefits | 26 |  | 26 |  |
Unrecognized tax benefits that would impact deferred taxes | 7 |  | 7 |  | $ 26
JUUL [Member] |  |  |  |  |
Investment [Line Items] |  |  |  |  |
Effective income tax rate reconciliation, change in deferred tax assets valuation allowance, amount |  |  | 1,040 |  |
Deferred tax assets, net | $ 1,040 |  | $ 1,040 |  |

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