Acquisitions, License Agreements and Other Investments Schedule of Intangible Assets Acquired (Details) - InfaCare Acquisition $ in Millions	Sep. 25, 2017 USD ($)
In-process Research and Development
Acquired Indefinite-lived Intangible Assets [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets	$ 113.5
Stannsoporfin [Member]
Acquired Indefinite-lived Intangible Assets [Line Items]
Business Combination, Cash Flow Discount Rate	13.50%

Amount of assets, excluding financial assets and goodwill, that lack physical substance, having a projected indefinite period of benefit, acquired at the acquisition date.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant