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Asset Impairment, Exit and Implementation Costs (Pre-tax Asset Impairment, Exit and Implementation Costs) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Restructuring Cost and Reserve [Line Items] |  |
Asset impairment and exit costs | $ 0 | $ 40
Plus amounts included in net periodic benefit income, excluding service cost, Asset Impairment and Exit Costs |  | 12
Asset Impairment and Exit Costs |  | 52
Total, Implementation Costs | 392 | 9
Plus amounts included in net period benefit income, excluding service cost, Implementation Costs | 0 | 0
Implementation Costs | 392 | 9
Total restructuring | 392 | 49
Plus amounts included in net periodic benefit income, excluding service cost, Total | 0 | 12
Total | 392 | 61
Operating Segments [Member] | Smokeable Products Segment [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Asset impairment and exit costs |  | 36
Total, Implementation Costs | 0 | 8
Total restructuring | 0 | 44
Operating Segments [Member] | Oral Tobacco Segment [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Asset impairment and exit costs |  | 8
Total, Implementation Costs | 0 | 1
Total restructuring | 0 | 9
Operating Segments [Member] | Wine Segment [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Asset impairment and exit costs |  | 0
Total, Implementation Costs | 392 | 0
Total restructuring | 392 | 0
Operating Segments [Member] | All Other [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Asset impairment and exit costs |  | (5)
Total, Implementation Costs | 0 | 0
Total restructuring | 0 | (5)
Corporate, Non-Segment [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Asset impairment and exit costs |  | 1
Asset Impairment and Exit Costs | 0 | 1
Total, Implementation Costs | 0 | 0
Total restructuring | $ 0 | $ 1

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