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Contingencies and Environmental Liabilities - Fosamax Product Liability Litigation - Narrative (Details) - Fosamax $ in Millions | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2015 legalmatter | Jul. 31, 2014 USD ($) | Mar. 31, 2014 legalmatter | Dec. 31, 2013 USD ($) legalmatter | Dec. 31, 2017 legalmatter | Jul. 31, 2015 legalmatter | Nov. 30, 2013 legalmatter
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Loss contingency, pending claims number |  |  |  |  | 4,085 |  |
New Jersey |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Loss contingency, pending claims number |  |  |  |  | 2,750 |  |
Initial number of cases selected for review |  |  |  |  | 30 |  |
Subsequent number of cases selected for review |  |  | 50 |  |  | 25 | 50
California State Court |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Loss contingency, pending claims number |  |  |  |  | 280 |  |
Initial number of cases selected for review |  |  | 10 |  |  |  |
Femur Fracture Litigation |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Loss contingency, pending claims number |  |  |  |  | 4,070 |  |
Femur Fracture Litigation | Other State Court |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Loss contingency, pending claims number |  |  |  |  | 5 |  |
ONJ Litigation |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Loss contingency, pending claims number |  |  |  |  | 15 |  |
Litigation Settlement, Amount Awarded to Other Party | $ |  | $ 27.3 |  | $ 27.7 |  |  |
Number of plaintiffs |  |  |  | 1,200 |  |  |
Percentage of participation in litigation settlement (as percent) |  | 95.00% |  |  |  |  |
Federal |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Loss contingency, pending claims number |  |  |  |  | 530 |  |
Loss contingency, claims dismissed number | 510 |  | 650 |  | 510 |  |
Loss contingency, claims on appeal, number |  |  |  |  | 515 |  |

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