Equity Investments (Summary of Investment in Joint Venture, Income Statement Data) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Schedule of Equity Method Investments [Line Items]
Net sales	$ 1,295.2	$ 1,233.1	$ 1,106.6
Gross profit	497.0	449.1	405.6
Net earnings	223.8	202.9	183.2
WAVE [Member] | Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Schedule of Equity Method Investments [Line Items]
Net sales	449.0	458.2	430.8
Gross profit	263.2	231.1	244.5
Net earnings	$ 187.2	$ 163.7	$ 184.6