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Contingencies (Judgments Paid and Provisions for Tobacco and Health Litigation) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 180 Months Ended
--- | --- | --- | ---
Sep. 30, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019
Loss Contingency Accrual [Roll Forward] |  |  |  |  |  |
Accrued liability for tobacco and health litigation items at beginning of period | $ 13 | $ 107 | $ 107 | $ 112 | $ 106 |
Payments | (7) |  | (21) | (151) | (118) |
Accrued liability for tobacco and health litigation items at end of period | 9 | $ 112 | 107 | 9 | 107 | $ 9
Interest Expense Related to Litigation [Member] |  |  |  |  |  |
Loss Contingency Accrual [Roll Forward] |  |  |  |  |  |
Provision related to litigation recorded | 0 |  | 1 | 5 | 15 |
Tobacco and Health Judgment [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Judgments paid (approximately) |  |  |  |  |  | 701
Litigation settlement interest expense (income) |  |  |  |  |  | 214
Tobacco and Health Judgment [Member] | Litigation Cases Results [Member] |  |  |  |  |  |
Loss Contingency Accrual [Roll Forward] |  |  |  |  |  |
Provision related to litigation recorded | 3 |  | $ 20 | 43 | $ 104 |
Engle Progeny Cases [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Judgments paid (approximately) |  |  |  |  |  | 309
Litigation settlement interest expense (income) |  |  |  |  |  | 52
Assets [Member] | Pending Litigation [Member] | PM USA [Member] |  |  |  |  |  |
Loss Contingency Accrual [Roll Forward] |  |  |  |  |  |
Security posted for appeal of judgments | $ 41 |  |  | $ 41 |  | $ 41

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