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Segment Reporting (Schedule of Tobacco and Health and Certain Other Litigation Items) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2021
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items] |  |  |  |  |
Loss contingency accrual, provision |  |  |  |  | $ 90
Tobacco and Health Litigation Cases [Member] |  |  |  |  |
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items] |  |  |  |  |
Loss contingency accrual, provision | $ 23 | $ 43 | $ 424 | $ 101 |
Tobacco and Health Litigation Cases [Member] | General corporate expenses [Member] |  |  |  |  |
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items] |  |  |  |  |
Loss contingency accrual, provision | 10 | 20 | 348 | 27 |
Tobacco and Health Litigation Cases [Member] | Segment Reconciling Items [Member] | Interest and other debt expense, net [Member] |  |  |  |  |
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items] |  |  |  |  |
Loss contingency accrual, provision | 0 | 2 | 11 | 3 |
PM USA [Member] | Tobacco and Health Litigation Cases [Member] | Operating Segments [Member] | Smokeable Products Segment [Member] | Smokable Products [Member] |  |  |  |  |
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items] |  |  |  |  |
Loss contingency accrual, provision | $ 13 | $ 21 | $ 65 | $ 71 |

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- Definition Amount charged against operating income increasing loss contingency liability, after adjustments to reduce previously estimated charges. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483076/450-20-50-1 + Details
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