Investments in Unconsolidated Affiliates (Summary of Investment in Joint Venture, Income Statement Data) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Schedule of Equity Method Investments [Line Items]
Net sales	$ 382.7	$ 326.3
Gross profit	149.9	124.3
Net earnings	69.1	59.9
Partnership Interest [Member] | Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Schedule of Equity Method Investments [Line Items]
Net sales	124.1	125.8
Gross profit	75.1	76.7
Net earnings	$ 55.3	$ 57.0