Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Statement [Abstract]
Revenue	$ 657.7	$ 731.1
Costs, expenses and other:
Cost of sales	332.7	343.8
Research and development	66.8	64.1
Marketing, selling and administrative	182.0	181.1
Amortization of intangible assets	51.6	49.0
Asset impairment, restructuring and other special charges (Note 7)	74.8	24.9
Interest expense, net of capitalized interest	16.5	20.8
Other–net, expense	1.1	2.6
Costs, expenses and other	725.5	686.3
Income (loss) before income taxes	(67.8)	44.8
Income tax (benefit) expense	(18.7)	13.3
Net income (loss)	$ (49.1)	$ 31.5
Earnings (loss) per share:
Basic (usd per share)	$ (0.12)	$ 0.09
Diluted (usd per share)	$ (0.12)	$ 0.09
Weighted average shares outstanding:
Basic (in shares)	403.9	365.7
Diluted (in shares)	403.9	366.0