Acquisitions (Schedule of Acquisitions) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Business Combinations [Abstract]
Net sales from continuing operations, pro forma	$ 280.0	$ 221.5	$ 532.6	$ 485.2
Total net sales	280.0	203.2	531.9	451.9
Net earnings (loss) from continuing operations before income taxes, pro forma	79.6	56.1	135.4	(252.5)
Earnings (loss) from continuing operations before income taxes	$ 74.3	$ 60.9	$ 124.0	$ (239.2)