CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024
Current assets:
Cash and cash equivalents	$ 404.2	$ 484.6
Accounts receivable, net	543.6	552.5
Inventories	388.7	377.0
Other current assets	121.0	124.0
Total current assets	1,457.5	1,538.1
Property, plant and equipment	3,005.4	2,985.8
Less: accumulated depreciation and amortization	1,373.7	1,404.2
Property, plant and equipment, net	1,631.7	1,581.6
Operating lease right-of-use assets	103.4	104.5
Investments in affiliated companies	211.9	202.1
Goodwill	107.5	106.0
Intangible assets, net	10.0	10.8
Deferred income taxes	26.0	26.0
Other noncurrent assets	70.2	74.3
Total Assets	3,618.2	3,643.4
Current liabilities:
Accounts payable	228.4	239.3
Accrued salaries, wages and benefits	67.8	73.5
Income taxes payable	22.3	31.5
Operating lease liabilities	21.8	17.9
Other current liabilities	186.4	188.2
Total current liabilities	526.7	550.4
Long-term debt	202.6	202.6
Deferred income taxes	21.3	20.5
Pension and other postretirement benefits	28.6	28.2
Operating lease liabilities	78.8	81.8
Deferred compensation benefits	11.4	15.4
Other long-term liabilities	65.7	62.2
Total Liabilities	935.1	961.1
Commitments and contingencies (Note 16)
Equity:
Preferred stock, 3.0 million shares authorized; 0 shares issued and outstanding	0.0	0.0
Common stock, par value $0.25 per share; 200.0 million shares authorized; shares issued: March 31, 2025 - 75.3 million, December 31, 2024 - 75.3 million; shares outstanding: March 31, 2025 - 71.8 million, December 31, 2024 - 72.3 million	18.8	18.8
Capital in excess of par value	1.8	22.1
Retained earnings	4,031.2	3,956.6
Accumulated other comprehensive loss	(205.5)	(258.1)
Treasury stock, at cost (March 31, 2025 - 3.5 million shares, December 31, 2024 - 3.0 million shares)	(1,163.2)	(1,057.1)
Total Equity	2,683.1	2,682.3
Total Liabilities and Equity	$ 3,618.2	$ 3,643.4