Acquisitions (Wilson Acquisition) (Details) - In Process Research and Development [Member] $ in Millions	May 25, 2018 USD ($)	Apr. 30, 2018 kr / shares
Research and Development Assets Acquired Other than Through Business Combination [Line Items]
Asset Acquisition, Share Price \| kr / shares		kr 232
Asset Acquisition, Potential Payments For Development, Regulatory, Commercial Milestones And Royalties On Sales \| $	$ 19.0

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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