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Contingencies (Schedule of Pending Cases) (Details) $ in Millions |  | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jul. 29, 2024 claim case lawsuit | Jun. 30, 2024 USD ($) | Dec. 31, 2023 USD ($) | Jun. 30, 2023 USD ($) | Jun. 30, 2024 USD ($) | Jun. 30, 2023 USD ($) | Dec. 31, 2021 USD ($) | Mar. 31, 2024 USD ($) | Jul. 27, 2023 claim | Mar. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Jul. 25, 2022 claim
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Pre-tax charge | $ |  | $ 151 | $ 346 | $ 381 | $ 151 | $ 381 |  | $ 364 |  | $ 171 | $ 71 |
Payments | $ |  | (257) |  | (80) | (263) | (91) |  |  |  |  |  |
Loss contingency accrual, provision | $ |  |  |  |  |  |  | $ 90 |  |  |  |  |
Tobacco and Health Judgment [Member] | Tobacco and Health and Certain Other Litigation [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency accrual, provision | $ |  | 20 |  | 40 | 38 | 52 |  |  |  |  |  |
Agreement To Resolve Shareholder Class Action | Tobacco and Health and Certain Other Litigation [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency accrual, provision | $ |  | $ 0 |  | $ 0 | $ 0 | $ 98 |  |  |  |  |  |
Individual Smoking and Health Cases [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of cases pending |  |  |  |  |  |  |  |  | 171 |  |  | 162
Health Care Cost Recovery Actions [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of cases pending |  |  |  |  |  |  |  |  | 1 |  |  | 1
E-vapor Litigation [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency accrual, provision | $ |  |  | $ 10 |  |  |  |  |  |  |  |  |
Number of cases pending |  |  |  |  |  |  |  |  | 5,326 |  |  | 4,030
Other Tabacco-Related Cases [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of cases pending |  |  |  |  |  |  |  |  | 3 |  |  | 3
Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, class action lawsuit | lawsuit | 17 |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Opted Out of Settlement [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of cases | 21 |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Individual Smoking and Health Cases [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of cases pending | 177 |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Individual Smoking and Health Cases [Member] | Pending Litigation [Member] | Illinois [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of cases pending | 23 |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Individual Smoking and Health Cases [Member] | Pending Litigation [Member] | New Mexico [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of cases pending | 15 |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Individual Smoking and Health Cases [Member] | Pending Litigation [Member] | Massachusetts [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of cases pending | 73 |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Individual Smoking and Health Cases [Member] | Pending Litigation [Member] | Oregon [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of cases pending | 11 |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Individual Smoking and Health Cases [Member] | Pending Litigation [Member] | Hawaii [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of cases pending | 3 |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Individual Smoking and Health Cases [Member] | Pending Litigation [Member] | Florida [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of cases pending | 29 |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | ETS Smoking and Health Case, Flight Attendants [Member] | Pending Litigation [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of cases | case | 664 |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Health Care Cost Recovery Actions [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of cases pending | 1 |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | E-vapor Litigation [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of cases pending | 81 |  |  |  |  |  |  |  |  |  |  |
Loss contingency, class action lawsuit | lawsuit | 21 |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | E-vapor Litigation [Member] | Canada [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of cases pending | 3 |  |  |  |  |  |  |  |  |  |  |
Loss contingency, class action lawsuit | lawsuit | 3 |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | E-vapor Litigation [Member] | Participating in Settlement but Pending Dismissal |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, class action lawsuit | lawsuit | 18 |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | E-vapor Litigation [Member] | Pending Individual Lawsuits [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of cases pending | 1 |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | E-vapor Litigation [Member] | Subject to Separate Settlement [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of cases | 38 |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Other Tabacco-Related Cases [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of cases pending | 3 |  |  |  |  |  |  |  |  |  |  |
Loss contingency, number of inactive cases | case | 1 |  |  |  |  |  |  |  |  |  |  |
Loss contingency, number of inactive class action lawsuits | case | 2 |  |  |  |  |  |  |  |  |  |  |

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