STATEMENTS OF CONSOLIDATED INCOME (UNAUDITED) - USD ($) shares in Thousands, $ in Millions		3 Months Ended
		Mar. 31, 2025	Mar. 31, 2024	[1]
Income Statement [Abstract]
Net sales		$ 777.4	$ 737.5
Costs and expenses:
Cost of products sold, excluding depreciation and amortization		673.4	651.3
Depreciation and amortization		30.0	28.8
Selling, general, administrative, research and development		30.8	32.6
Restructuring costs		1.8	0.1
Other operating charges, net		0.0	0.4
Total costs and expenses		736.0	713.2
Operating income		41.4	24.3
Other (expense) income:
Interest expense		(11.2)	(11.5)
Other (expense) income, net - Note 9		(1.4)	10.9
Income before income taxes		28.8	23.7
Income tax provision		(7.2)	(5.5)
Net income	[2]	$ 21.6	$ 18.2
Net income per common share:
Basic		$ 1.34	$ 1.13	[3]
Diluted		$ 1.31	$ 1.12	[3]
Weighted-average number of common shares outstanding (in thousands):
Basic		16,116	16,027	[3]
Diluted		16,399	16,230	[3]

[1] Adjusted to reflect the retrospective change in inventory valuation methodology from LIFO to WAC. See Note 14 for further discussion.

[2] See Note 12 for supplemental cash flow information.

[3] Adjusted to reflect the retrospective change in inventory valuation methodology from LIFO to WAC. See Note 14 for further discussion.