Acquisitions and Divestitures - Assets and Liabilities Held for Sale (Details) - Worldwide rights to Osurnia and U.S. rights to Capstar - Held for Sale - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Inventories	$ 6.2	$ 10.6
Other intangibles, net	70.6	61.2
Property and equipment, net	0.2	0.2
Total assets held for sale	77.0	72.0
Deferred taxes	(0.1)	(1.4)
Total liabilities held for sale	$ (0.1)	$ (1.4)

Amount classified as assets attributable to disposal group held for sale or disposed of.

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