Acquisitions (Schedule of Acquisitions) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Business Combinations [Abstract]
Net sales from continuing operations, pro forma	$ 292.2	$ 258.4	$ 824.8	$ 743.6
Total net sales	292.2	246.3	824.1	698.2
Net earnings (loss) from continuing operations before income taxes, pro forma	72.5	67.2	207.9	185.3
Earnings (loss) from continuing operations before income taxes	$ 67.4	$ 69.4	$ 191.4	$ (169.8)