Acquisitions and Discontinued Operations Income Statement (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Discontinued Operations and Disposal Groups [Abstract]
Net sales	$ 0.0	$ 538.9
Cost of goods sold	0.0	330.2
Gross profit	0.0	208.7
Selling, general and administrative	0.3	137.8
Research and development	0.0	11.3
Operating income (loss)	(0.3)	59.6
(Loss) income from discontinued operations before income taxes	(0.8)	58.2
Income tax provision	0.3	13.7
(Loss) income from discontinued operations, net of tax	$ (1.1)	$ 44.5