Acquisitions and License Agreements (Schedule of Intangible Assets Acquired) (Details) - USD ($) $ in Millions		Feb. 13, 2018	Dec. 11, 2017	Sep. 25, 2017
Amitiza | Sucampo [Member]
Intangible Assets Acquired as Part of Business Combination [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		$ 634.0
Intangible assets acquired, weighted-average useful life		9 years
Cash flow discount rate		14.00%
Rescula [Member] | Sucampo [Member]
Intangible Assets Acquired as Part of Business Combination [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		$ 11.0
Intangible assets acquired, weighted-average useful life		8 years
Cash flow discount rate		14.00%
VTS-270 [Member] | Sucampo [Member]
Intangible Assets Acquired as Part of Business Combination [Line Items]
Indefinite lived intangible assets acquired		$ 274.5
Cash flow discount rate		15.00%
MNK-6105 [Member] | Ocera [Member]
Intangible Assets Acquired as Part of Business Combination [Line Items]
Indefinite lived intangible assets acquired	[1]		$ 64.5
Cash flow discount rate			15.50%
Stannsoporfin [Member] | InfaCare [Member]
Intangible Assets Acquired as Part of Business Combination [Line Items]
Indefinite lived intangible assets acquired	[2]			$ 113.5
Cash flow discount rate				13.50%

[1] Of the $42.4 million net assets acquired for Ocera, $40.5 million and $1.9 million was paid in fiscal 2017 and 2018, respectively.

[2] During fiscal 2019, the Company recognized a full impairment of the IPR&D asset related to stannsoporfin of $113.5 million. During fiscal 2018, the Company reduced the contingent consideration liability related to this acquisition to zero through the recognition of a $35.0 million fair value adjustment. Refer to Note 13 and 21 for further information.