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Contingencies (Judgments Paid and Provisions for Tobacco and Health Litigation) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended | 237 Months Ended
--- | --- | --- | --- | ---
Jun. 30, 2024 | Mar. 31, 2024 | Dec. 31, 2023 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2021 | Jun. 30, 2024
Loss Contingency Accrual [Roll Forward] |  |  |  |  |  |  |  |
Accrued liability for tobacco and health litigation items at beginning of period | $ 364 | $ 346 |  | $ 171 | $ 346 | $ 71 |  |
Loss contingency accrual, provision |  |  |  |  |  |  | $ 90 |
Payments | (257) |  |  | (80) | (263) | (91) |  |
Accrued liability for tobacco and health litigation items at end of period | 151 | $ 364 | $ 346 | 381 | 151 | 381 |  | $ 151
Related Interest Costs [Member] |  |  |  |  |  |  |  |
Loss Contingency Accrual [Roll Forward] |  |  |  |  |  |  |  |
Loss contingency accrual, provision | 0 |  |  | 10 | 0 | 11 |  |
Assets [Member] | Pending Litigation [Member] | PM USA [Member] |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Security posted for appeal of judgments | 37 |  |  |  | 37 |  |  | 37
Tobacco and Health Judgment [Member] |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Judgments paid |  |  |  |  |  |  |  | 1,100
Litigation settlement interest expense (income) |  |  |  |  |  |  |  | 241
Tobacco and Health Judgment [Member] | Tobacco and Health and Certain Other Litigation [Member] |  |  |  |  |  |  |  |
Loss Contingency Accrual [Roll Forward] |  |  |  |  |  |  |  |
Loss contingency accrual, provision | 20 |  |  | 40 | 38 | 52 |  |
Engle Progeny Cases [Member] |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Judgments paid |  |  |  |  |  |  |  | 444
Litigation settlement interest expense (income) |  |  |  |  |  |  |  | $ 60
Agreement To Resolve Shareholder Class Action | Tobacco and Health and Certain Other Litigation [Member] |  |  |  |  |  |  |  |
Loss Contingency Accrual [Roll Forward] |  |  |  |  |  |  |  |
Loss contingency accrual, provision | 0 |  |  | 0 | 0 | 98 |  |
JUUL-related settlements [Member] | Tobacco and Health and Certain Other Litigation [Member] |  |  |  |  |  |  |  |
Loss Contingency Accrual [Roll Forward] |  |  |  |  |  |  |  |
Loss contingency accrual, provision | $ 24 |  |  | $ 240 | $ 30 | $ 240 |  |
Health Care Cost Recovery Actions, 2005-2007 NPM Adjustment [Member] | Pending Litigation [Member] | PM USA [Member] |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Litigation settlement interest expense (income) |  |  | $ (21) |  |  |  |  |

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