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Contingencies (Health Care Cost Recovery Litigation - 2003-2015 NPM Adjustment Disputes - Settlement with 26 States and Territories and Settlement with New York) (Details) $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2013 USD ($) state | Nov. 30, 1998 state | Dec. 31, 2017 USD ($) plantiff | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) plantiff | Dec. 31, 2012 state claims
Loss Contingencies [Line Items] |  |  |  |  |  |
Payments made related to litigation |  |  | $ 21 | $ 190 | $ 57 |
Health Care Cost Recovery Actions, 2016 NPM Adjustments [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Estimate of possible gain |  |  | $ 296 |  |  |
Health Care Cost Recovery Actions [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Number of states with settled litigation | state |  | 46 |  |  |  |
Health Care Cost Recovery Actions [Member] | Philip Morris USA [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Loss contingency, number of states | plantiff |  |  | 52 |  |  |
Health Care Cost Recovery Actions, 2004 NPM Adjustment [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Estimate of possible gain |  |  | $ 388 |  |  |
Health Care Cost Recovery Actions, 2005 NPM Adjustment [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Estimate of possible gain |  |  | 181 |  |  |
Health Care Cost Recovery Actions, 2006 NPM Adjustment [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Estimate of possible gain |  |  | 154 |  |  |
Health Care Cost Recovery Actions, 2007 NPM Adjustment [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Estimate of possible gain |  |  | 185 |  |  |
Health Care Cost Recovery Actions, 2008 NPM Adjustment [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Estimate of possible gain |  |  | 250 |  |  |
Health Care Cost Recovery Actions, 2009 NPM Adjustment [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Estimate of possible gain |  |  | 211 |  |  |
Health Care Cost Recovery Actions, 2010 NPM Adjustment [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Estimate of possible gain |  |  | 218 |  |  |
Health Care Cost Recovery Actions, 2011 NPM Adjustment [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Estimate of possible gain |  |  | 166 |  |  |
Health Care Cost Recovery Actions, 2012 NPM Adjustment [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Estimate of possible gain |  |  | 214 |  |  |
Health Care Cost Recovery Actions, 2013 NPM Adjustment [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Estimate of possible gain |  |  | 223 |  |  |
Health Care Cost Recovery Actions, 2014 NPM Adjustment [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Estimate of possible gain |  |  | 246 |  |  |
Health Care Cost Recovery Actions, 2015 NPM Adjustments [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Estimate of possible gain |  |  | $ 292 |  |  |
Settled Litigation [Member] | Health Care Cost Recovery Actions [Member] | Philip Morris USA [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Number of claims resolved | claims |  |  |  |  |  | 2
Number of states with settled litigation | plantiff |  |  | 27 |  | 170,000,000 |
Number of states with settled litigation, first settlement | plantiff |  |  | 26 |  |  |
Loss contingency number of states with settled litigation including new york | state |  |  |  |  |  | 19
Litigation settlement amount |  |  |  |  | $ 740 |
Pending Litigation [Member] | Health Care Cost Recovery Actions, 2003 NPM Adjustment [Member] | Philip Morris USA [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Loss contingency, number of states | state | 15 |  |  |  |  |
Loss contingency, number of states that did not enforce escrow statutes | state | 6 |  |  |  |  |
Loss contingency, number of disputes outstanding | state | 2 |  |  |  |  |
Indiana and Kentucky [Member] | Settled Litigation [Member] | Health Care Cost Recovery Actions, 2003 NPM Adjustment [Member] | Philip Morris USA [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Number of states with settled litigation | state | 2 |  |  |  |  |
Maryland, Missouri, New Mexico and Pennsylvania [Member] | Pending Litigation [Member] | Health Care Cost Recovery Actions, 2003 NPM Adjustment [Member] | Philip Morris USA [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Loss contingency, number of states that did not enforce escrow statutes | state | 4 |  |  |  |  |
Cost of Sales [Member] | Pending Litigation [Member] | Health Care Cost Recovery Actions, 2003 NPM Adjustment [Member] | Philip Morris USA [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Litigation settlement amount | $ 74 |  |  |  |  |

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