CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Current assets:
Cash and cash equivalents	$ 628.5	$ 484.6
Accounts receivable, net	625.0	552.5
Inventories	438.0	377.0
Other current assets	131.8	124.0
Total current assets	1,823.3	1,538.1
Property, plant and equipment	3,232.9	2,985.8
Less: accumulated depreciation and amortization	1,492.3	1,404.2
Property, plant and equipment, net	1,740.6	1,581.6
Operating lease right-of-use assets	97.8	104.5
Investments in affiliated companies	220.9	202.1
Goodwill	110.6	106.0
Intangible assets, net	8.9	10.8
Deferred income taxes	27.9	26.0
Other noncurrent assets	75.8	74.3
Total Assets	4,105.8	3,643.4
Current liabilities:
Accounts payable	255.8	239.3
Accrued salaries, wages and benefits	111.8	73.5
Income taxes payable	33.3	31.5
Operating lease liabilities	21.4	17.9
Other current liabilities	213.1	188.2
Total current liabilities	635.4	550.4
Long-term debt	202.7	202.6
Deferred income taxes	22.8	20.5
Pension and other postretirement benefits	31.1	28.2
Operating lease liabilities	73.5	81.8
Deferred compensation benefits	13.5	15.4
Other long-term liabilities	75.3	62.2
Total Liabilities	1,054.3	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: September 30, 2025 - 75.3 million, December 31, 2024 - 75.3 million; shares outstanding: September 30, 2025 - 71.9 million, December 31, 2024 - 72.3 million	18.8	18.8
Capital in excess of par value	0.0	22.1
Retained earnings	4,262.4	3,956.6
Accumulated other comprehensive loss	(102.3)	(258.1)
Treasury stock, at cost (September 30, 2025 - 3.4 million shares, December 31, 2024 - 3.0 million shares)	(1,127.4)	(1,057.1)
Total Equity	3,051.5	2,682.3
Total Liabilities and Equity	$ 4,105.8	$ 3,643.4