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Contingencies and Environmental Liabilities - Propecia/Proscar Litigation - Narrative (Details) | 12 Months Ended
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Dec. 31, 2017 legalmatter Plaintiff
Propecia |
Loss Contingencies [Line Items] |
Loss contingency, pending claims number | 775
Propecia | Cases alleging cancer |
Loss Contingencies [Line Items] |
Number of plaintiff groups | Plaintiff | 20
Propecia/Proscar | Other State Court | California |
Loss Contingencies [Line Items] |
Loss contingency, pending claims number | 1
Propecia/Proscar | Other State Court | Ohio |
Loss Contingencies [Line Items] |
Loss contingency, pending claims number | 1
Propecia/Proscar | Other State Court | MASSACHUSETTS |
Loss Contingencies [Line Items] |
Loss contingency, pending claims number | 1

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