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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 | 213 Months Ended |
--- | --- | --- | --- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021 | Jun. 30, 2022 | Jul. 25, 2022
Loss Contingency Accrual [Roll Forward] |  |  |  |  |  |  |
Accrued liability for tobacco and health litigation items at beginning of period | $ 0 | $ 8 | $ 91 | $ 9 | $ 9 |  |
Loss contingency accrual, provision |  |  |  |  | 90 |  |
Payments | (21) | (16) | (124) | (52) |  |  |
Accrued liability for tobacco and health litigation items at end of period | 25 | 0 | 25 | 0 | $ 91 | $ 25 |
Related Interest Costs [Member] |  |  |  |  |  |  |
Loss Contingency Accrual [Roll Forward] |  |  |  |  |  |  |
Loss contingency accrual, provision | 1 | 0 | 1 | 0 |  |  |
Assets [Member] | Pending Litigation [Member] | PM USA [Member] | Subsequent Event [Member] |  |  |  |  |  |  |
Loss Contingency Accrual [Roll Forward] |  |  |  |  |  |  |
Security posted for appeal of judgments |  |  |  |  |  |  | $ 50
Tobacco and Health Judgment [Member] |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Judgments paid (approximately) |  |  |  |  |  | 929 |
Litigation settlement interest expense (income) |  |  |  |  |  | 228 |
Tobacco and Health Judgment [Member] | Tobacco and Health and Certain Other Litigation [Member] |  |  |  |  |  |  |
Loss Contingency Accrual [Roll Forward] |  |  |  |  |  |  |
Loss contingency accrual, provision | $ 45 | $ 8 | $ 57 | $ 43 |  |  |
Engle Progeny Cases [Member] |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Judgments paid (approximately) |  |  |  |  |  | 421 |
Litigation settlement interest expense (income) |  |  |  |  |  | $ 57 |

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