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Contingencies and Certain Commitments (Actions In Which We Are The Plaintiff) (Details) | 1 Months Ended | 3 Months Ended
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Jun. 30, 2018 Patents | Feb. 28, 2018 Patents | Jan. 31, 2018 Patents | Dec. 31, 2017 Patents | Oct. 31, 2017 Patents | Sep. 30, 2017 Patents | Jul. 31, 2017 Patents | Mar. 31, 2017 Patents | Feb. 28, 2017 Patents | Aug. 31, 2016 Patents | Jul. 31, 2016 Patents | Jan. 31, 2016 Patents | Dec. 31, 2015 Patents | Jun. 30, 2015 Patents | Apr. 30, 2017 Patents Defendant
Precedex Premix [Member] | Hospira Versus Amneal Pharmaceuticals LLC [Member] | Pending Litigation [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of patents not infringed upon |  |  |  |  |  |  |  |  |  |  |  |  |  | 4 |
Precedex Premix [Member] | Hospira Versus Amneal Pharmaceuticals LLC [Member] | Settled Litigation [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of patents infringed upon |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |
Number of patents not infringed upon |  |  | 3 |  |  |  |  |  |  |  |  |  |  |  |
Precedex Premix [Member] | Hospira Versus Fresenius [Member] | Pending Litigation [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of patents not infringed upon |  |  |  |  |  |  |  |  |  |  |  |  | 4 |  |
Precedex Premix [Member] | Hospira Versus Par [Member] | Pending Litigation [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of patents not infringed upon |  |  |  |  |  |  |  |  |  | 4 |  |  |  |  |
Precedex Premix [Member] | Hospira Versus Gland [Member] | Pending Litigation [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of patents allegedly infringed upon |  | 4 |  |  |  |  |  |  |  |  |  |  |  |  |
Number of patents not infringed upon |  |  |  | 6 |  |  |  |  |  |  |  |  |  |  |
Precedex Premix [Member] | Hospira Versus Hengrui [Member] | Pending Litigation [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of patents allegedly infringed upon |  | 4 |  |  |  |  |  |  |  |  |  |  |  |  |
Number of patents not infringed upon |  |  |  | 6 |  |  |  |  |  |  |  |  |  |  |
Precedex Premix [Member] | Hospira Versus Baxter [Member] | Pending Litigation [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of patents not infringed upon |  | 4 |  |  |  |  |  |  |  |  |  |  |  |  |
Number of patents due to expire in 2019 |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |
Number of patents due to expire in 2032 |  | 3 |  |  |  |  |  |  |  |  |  |  |  |  |
Patent Infringement [Member] | Judicial Ruling [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of patents infringed upon | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Patent Infringement [Member] | Bosulif [Member] | Wyeth Versus Sun [Member] | Pending Litigation [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of patents allegedly infringed upon |  |  |  |  |  | 2 |  |  |  |  |  |  |  |  |
Patent Infringement [Member] | Xeljanz [Member] | Pfizer Versus MicroLabs [Member] | Pending Litigation [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of patents allegedly infringed upon |  |  |  |  |  |  |  |  | 3 |  |  |  |  |  |
Patent Infringement [Member] | Xeljanz [Member] | Pfizer Versus Zydus [Member] | Pending Litigation [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of patents allegedly infringed upon |  |  |  |  |  |  |  | 3 |  |  |  |  |  |  |
Patent Infringement [Member] | Xeljanz [Member] | Pfizer Versus Prinston and Breckenridge [Member] | Pending Litigation [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of patents allegedly infringed upon |  |  |  |  |  |  |  | 2 |  |  |  |  |  |  |
Patent Infringement [Member] | Xeljanz [Member] | Pfizer Versus Breckenridge [Member] | Pending Litigation [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of patents allegedly infringed upon |  |  |  |  | 4 |  |  |  |  |  |  |  |  |  |
Number of patents due to expire in December 2020 |  |  |  |  | 3 |  |  |  |  |  |  |  |  |  |
Number or patents due to expire in December 2025 |  |  |  |  | 1 |  |  |  |  |  |  |  |  |  |
Patent Infringement [Member] | Toviaz [Member] | Pfizer Versus Mylan Laboratories Limited [Member] | Judicial Ruling [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of patents not infringed upon |  |  |  |  |  |  | 5 |  |  |  |  |  |  |  |
Patent Infringement [Member] | Toviaz [Member] | Pfizer Versus Mylan Laboratories Limited [Member] | Pending Litigation [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of patents allegedly infringed upon |  |  |  |  |  |  |  |  |  |  | 5 | 5 |  |  |
Patent Infringement [Member] | Toviaz Composition-of-matter Patents [Member] | Pfizer Versus Mylan Laboratories Limited [Member] | Pending Litigation [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of patents infringed upon |  |  |  |  |  |  |  |  |  |  |  | 3 |  |  |
Patent Infringement [Member] | Eliquis [Member] | Pfizer and BMS Versus Several Generic Manufacturers [Member] | Pending Litigation [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of patents allegedly infringed upon |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3
Number of defendants | Defendant |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 25

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