Equity Investments (Summary of Investment in Joint Venture, Income Statement Data) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Schedule of Equity Method Investments [Line Items]
Net sales	$ 1,106.6	$ 936.9	$ 1,038.1
Gross profit	405.6	333.1	395.1
Net earnings	183.2	(99.1)	214.5
WAVE [Member] | Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Schedule of Equity Method Investments [Line Items]
Net sales	430.8	343.3	393.2
Gross profit	244.5	194.7	219.6
Net earnings	$ 184.6	$ 137.8	$ 166.0