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Contingencies (Judgments Recorded and Paid) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2016 | Mar. 31, 2016 | Jun. 30, 2015 | Mar. 31, 2015 | Jun. 30, 2016 | Jun. 30, 2015
Loss Contingency Accrual [Roll Forward] |  |  |  |  |  |
Accrued liability for tobacco and health litigation items at beginning of period | $ 153 | $ 132 | $ 77 | $ 39 | $ 132 | $ 39
Payments | (128) |  | (5) |  | (145) | (10)
Accrued liability for tobacco and health litigation items at end of period | 30 | $ 153 | 77 | $ 77 | 30 | 77
Interest Expense Related To Litigation [Member] |  |  |  |  |  |
Loss Contingency Accrual [Roll Forward] |  |  |  |  |  |
Pre-tax charges | 4 |  | 0 |  | 6 | 0
Aspinall [Member] |  |  |  |  |  |
Loss Contingency Accrual [Roll Forward] |  |  |  |  |  |
Pre-tax charges | 0 |  | 0 |  | 32 | 0
Tobacco and Health Judgment [Member] | Litigation Cases Results [Member] |  |  |  |  |  |
Loss Contingency Accrual [Roll Forward] |  |  |  |  |  |
Pre-tax charges | 1 |  | 5 |  | 5 | 5
Engle Progeny Cases, Federal [Member] | Litigation Cases Results [Member] |  |  |  |  |  |
Loss Contingency Accrual [Roll Forward] |  |  |  |  |  |
Pre-tax charges | $ 0 |  | $ 0 |  | $ 0 | $ 43

X
- Definition Amount of loss contingency liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349 + Details
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- Definition Amount of payments made reducing loss contingency liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349 + Details
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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/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349 + Details
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