Equity Investment (Summary of Investment in Joint Venture, Income Statement Data) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Schedule of Equity Method Investments [Line Items]
Net sales	$ 325.0	$ 292.2	$ 928.6	$ 824.1
Gross profit	117.5	110.7	337.6	303.1
Net earnings	57.5	50.8	154.1	141.3
WAVE [Member] | Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Schedule of Equity Method Investments [Line Items]
Net sales	116.9	114.2	356.3	321.5
Gross profit	64.0	64.5	180.1	188.0
Net earnings	$ 46.7	$ 49.1	$ 130.0	$ 143.2