CONSOLIDATED STATEMENTS OF EARNINGS (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Statement [Abstract]
Revenues	$ 188.0	$ 199.8	$ 389.4	$ 400.8
Cost of goods sold	110.3	116.1	228.4	239.1
Gross profit	77.7	83.7	161.0	161.7
Research and development expenses	21.3	24.6	44.4	47.9
Selling and administrative expenses	30.7	36.7	63.0	72.9
Asset Impairment Charges	239.8	0.0	239.8	0.0
Restructuring charges	0.5	0.1	7.1	0.3
Operating expenses	292.3	61.4	354.3	121.1
Operating (loss) earnings	(214.6)	22.3	(193.3)	40.6
Interest expense, net	0.8	4.1	1.6	8.1
Other expense (income), net	1.7	(0.6)	1.2	(1.5)
(Loss) earnings before income taxes and discontinued operations	(217.1)	18.8	(196.1)	34.0
Provision for income taxes	25.8	1.4	28.7	4.1
(Loss) earnings from continuing operations	(242.9)	17.4	(224.8)	29.9
Net (loss) earnings	$ (242.9)	$ 17.6	$ (224.8)	$ 30.1
Earnings per share:
Earnings (loss) from continuing operations, per basic share	$ (2.64)	$ 0.19	$ (2.44)	$ 0.32
Earnings (loss) from continuing operations, per diluted share	(2.64)	0.18	(2.44)	0.31
Earnings from discontinued operations, per basic share	0	0	0	0.01
Earnings from discontinued operations, per diluted share	0	0.01	0	0.01
Net earnings (loss) per share, basic	(2.64)	0.19	(2.44)	0.33
Net earnings (loss) per share, diluted	$ (2.64)	$ 0.19	$ (2.44)	$ 0.32
Weighted-average common shares outstanding:
Basic (in shares)	92,000,000.0	92,500,000	92,200,000	92,400,000
Diluted (in shares)	92,000,000.0	94,900,000	92,200,000	95,000,000.0