Acquisitions, Dispositions, and Deconsolidations - Life Sciences Segment (Details) - BeneVir - Life Sciences Segment	Jun. 08, 2018 USD ($)
Business Acquisition [Line Items]
Consideration paid	$ 106,700,000
Payment received	72,800,000
Cash payment to be received upon release of escrow	9,200,000
Payment to be received upon achievement of specified development milestones	512,200,000.0
Pansend
Business Acquisition [Line Items]
Cash payment held in escrow	13,300,000
Gain on sale of business	102,100,000
Payment received	93,400,000
Payments to be received upon achievement of specified levels of annual net sales of licensed products	493,100,000.0
Payment to be received upon achievement of specified development milestones	189,700,000.0
Pansend \| Non-controlling Interest
Business Acquisition [Line Items]
Gain on sale of business	$ 21,700,000
Janssen Biotech, Inc.
Business Acquisition [Line Items]
Percentage of ownership interest acquired	75.90%
Cash paid in acquisition	$ 140,000,000

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