Acquisitions (Schedule of Acquisitions) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Business Combinations [Abstract]
Net sales from continuing operations, pro forma	$ 252.6	$ 263.7
Total net sales	251.9	248.7
Net earnings (loss) from continuing operations, pro forma	42.9	(234.0)
Net earnings (loss) from continuing operations, as reported	$ 37.5	$ (222.6)