Condensed Consolidated Statements of Earnings and Comprehensive Income - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Income Statement [Abstract]
Net sales	$ 382.7	$ 326.3
Cost of goods sold	232.8	202.0
Gross profit (loss)	149.9	124.3
Selling, general and administrative expenses	78.0	65.4
Equity (earnings) from unconsolidated affiliates, net	(26.6)	(27.2)
Segment operating income (loss)	98.5	86.1
Interest expense	8.5	9.0
Other non-operating (income), net	(0.7)	(3.1)
Earnings before income taxes	90.7	80.2
Income tax expense	21.6	20.3
Net earnings	69.1	59.9
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	0.3	(0.8)
Derivative (loss) gain, net	(1.5)	0.5
Pension and postretirement adjustments	0.6	(0.6)
Total other comprehensive (loss)	(0.6)	(0.9)
Total comprehensive income	$ 68.5	$ 59.0
Net earnings per share of common stock:
Basic	$ 1.59	$ 1.37
Diluted	$ 1.58	$ 1.36
Average number of common shares outstanding:
Basic	43.5	43.8
Diluted	43.8	44.1