Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 69.6	$ 70.8
Accounts and notes receivable, net	125.4	111.0
Inventories, net	106.4	104.0
Income taxes receivable	0.4	0.8
Other current assets	28.9	26.4
Total current assets	330.7	313.0
Property, plant, and equipment, less accumulated depreciation and amortization of $614.1 and $598.2, respectively	559.9	566.4
Operating lease assets	26.7	26.6
Finance lease assets	27.8	25.2
Prepaid pension costs	86.1	84.6
Investments in unconsolidated affiliates	26.2	17.4
Goodwill	175.3	175.5
Intangible assets, net	408.6	412.4
Other non-current assets	50.2	51.3
Total assets	1,691.5	1,672.4
Current liabilities:
Current installments of long-term debt	22.5	22.5
Accounts payable and accrued expenses	131.1	159.9
Operating lease liabilities	6.9	6.8
Finance lease liabilities	3.0	3.0
Income taxes payable	20.9	2.3
Total current liabilities	184.4	194.5
Long-term debt, less current installments	558.9	564.3
Operating lease liabilities	20.5	20.4
Finance lease liabilities	26.4	23.4
Postretirement benefit liabilities	42.1	42.4
Pension benefit liabilities	26.6	26.9
Other long-term liabilities	24.4	26.8
Income taxes payable	15.5	15.0
Deferred income taxes	165.9	166.9
Total non-current liabilities	880.3	886.1
Shareholders' equity:
Common stock, $0.01 par value per share, 200 million shares authorized, 63,072,232 shares issued and 43,777,371 shares outstanding as of March 31, 2024 and 63,054,340 shares issued and 43,902,061 shares outstanding as of December 31, 2023	0.6	0.6
Capital in excess of par value	595.3	591.7
Retained earnings	1,394.1	1,346.6
Treasury stock, at cost, 19,294,861 shares as of March 31, 2024 and 19,152,279 shares as of December 31, 2023	(1,257.6)	(1,242.4)
Accumulated other comprehensive (oss)	(105.6)	(104.7)
Total shareholders' equity	626.8	591.8
Total liabilities and shareholders' equity	$ 1,691.5	$ 1,672.4