Dispositions and Assets Held for Sale (Assets and Liabilities of Oncology Franchise) (Details) - Disposal Group - Oncology $ in Millions	Jun. 30, 2018 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Intangible assets	$ 1,571.8
Goodwill	565.1
Other	12.0
Current assets	2,148.9
Current liabilities	$ 116.8

Amount classified as assets attributable to disposal group held for sale or disposed of, expected to be disposed of within one year or the normal operating cycle, if longer.

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