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Contingencies (Schedule of Pending Cases) (Details) $ in Millions |  | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jul. 25, 2022 lawsuit claim case | Jun. 30, 2022 USD ($) | Jun. 30, 2021 USD ($) | Jun. 30, 2022 USD ($) | Jun. 30, 2021 USD ($) | Dec. 31, 2021 USD ($) | Mar. 31, 2022 USD ($) | Jul. 26, 2021 claim | Mar. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Pre-tax charge | $ |  | $ 25 | $ 0 | $ 25 | $ 0 | $ 91 | $ 0 |  | $ 8 | $ 9
Payments | $ |  | (21) | (16) | (124) | (52) |  |  |  |  |
Loss contingency accrual, provision | $ |  |  |  |  |  | $ 90 |  |  |  |
Individual Smoking and Health Cases [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Number of cases pending |  |  |  |  |  |  |  | 169 |  |
Health Care Cost Recovery Actions [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Number of cases pending |  |  |  |  |  |  |  | 1 |  |
E-vapor Litigation [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Number of cases pending |  |  |  |  |  |  |  | 2,626 |  |
Other Tabacco-Related Cases [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Number of cases pending |  |  |  |  |  |  |  | 3 |  |
Tobacco and Health Judgment [Member] | Tobacco and Health and Certain Other Litigation [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Loss contingency accrual, provision | $ |  | $ 45 | $ 8 | $ 57 | $ 43 |  |  |  |  |
Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Loss contingency, class action lawsuit | lawsuit | 17 |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Individual Smoking and Health Cases [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Number of cases pending | 162 |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Individual Smoking and Health Cases [Member] | Pending Litigation [Member] | Illinois [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Number of cases pending | 16 |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Individual Smoking and Health Cases [Member] | Pending Litigation [Member] | New Mexico [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Number of cases pending | 18 |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Individual Smoking and Health Cases [Member] | Pending Litigation [Member] | Massachusetts [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Number of cases pending | 36 |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Individual Smoking and Health Cases [Member] | Pending Litigation [Member] | Florida [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Number of cases pending | 58 |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | ETS Smoking and Health Case, Flight Attendants [Member] | Pending Litigation [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Number of cases | case | 1,396 |  |  |  |  |  |  |  |  |
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 | 4,030 |  |  |  |  |  |  |  |  |
Loss contingency, class action lawsuit | lawsuit | 58 |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | E-vapor Litigation [Member] | Pending Individual Lawsuits [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Number of cases pending | 2,957 |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | E-vapor Litigation [Member] | Pending Lawsuits Filed By State Or Local Governments [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Number of cases pending | 1,015 |  |  |  |  |  |  |  |  |
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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