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Asset Impairment, Exit and Implementation Costs (Pre-tax Asset Impairment, Exit and Implementation Costs) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Restructuring Cost and Reserve [Line Items] |  |  |
Asset Impairment and Exit Costs | $ 33 | $ 179 | $ 4
Implementation Costs | 45 | 24 |
Total | 78 | 203 |
Termination, settlement, and curtailment costs |  | 27 |
Operating Segments [Member] | Smokeable Products [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Asset Impairment and Exit Costs | 5 | 125 |
Implementation Costs | 17 | 9 |
Total | 22 | 134 |
Operating Segments [Member] | Smokeless Products [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Asset Impairment and Exit Costs | 28 | 42 |
Implementation Costs | 28 | 15 |
Total | 56 | 57 |
Operating Segments [Member] | All Other [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Asset Impairment and Exit Costs |  | 7 |
Implementation Costs |  | 0 |
Total |  | 7 |
Corporate, Non-Segment [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Asset Impairment and Exit Costs | $ 0 | 5 | $ 0
Implementation Costs |  | 0 |
Total |  | $ 5 |

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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit from settlement and curtailment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(7) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Amount of other expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses associated with a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 + Details
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