Contingencies and Certain Commitments (Actions In Which We Are The Plaintiff) (Details)	1 Months Ended											3 Months Ended
	Mar. 31, 2019 Patents	Jun. 30, 2018 Patents	Feb. 28, 2018 Patents	Jan. 31, 2018 Patents	Dec. 31, 2017 Patents	Oct. 31, 2017 Patents	Sep. 30, 2017 Patents	Mar. 31, 2017 Patents	Feb. 28, 2017 Patents	Aug. 31, 2016 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 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]
Gain Contingencies [Line Items]
Number of patents which the Patent Trial and Appeal Board refused to initiate proceedings		2
Patent Infringement [Member] | Judicial Ruling [Member]
Gain Contingencies [Line Items]
Number of patents infringed upon		1
Patent Infringement [Member] | Pfizer Versus Ajanta [Member] | Pending Litigation [Member]
Gain Contingencies [Line Items]
Number of patents allegedly infringed upon	2
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] | 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