CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 490.9	$ 853.9
Accounts receivable, net	524.3	512.0
Inventories	401.2	434.7
Other current assets	134.2	135.8
Total current assets	1,550.6	1,936.4
Property, plant and equipment	2,990.7	2,738.0
Less: accumulated depreciation and amortization	1,419.7	1,324.7
Property, plant and equipment, net	1,571.0	1,413.3
Operating lease right-of-use assets	108.0	99.2
Investments in affiliated companies	217.5	210.0
Goodwill	108.8	108.5
Intangible assets, net	12.3	15.1
Deferred income taxes	37.6	25.7
Other noncurrent assets	69.3	21.3
Total Assets	3,675.1	3,829.5
Current liabilities:
Notes payable and other current debt	0.0	134.0
Accounts payable	224.3	242.4
Accrued salaries, wages and benefits	79.6	105.9
Income taxes payable	33.4	16.6
Operating lease liabilities	19.9	17.7
Other current liabilities	159.3	155.2
Total current liabilities	516.5	671.8
Long-term debt	202.6	72.8
Deferred income taxes	9.4	12.7
Pension and other postretirement benefits	30.2	29.6
Operating lease liabilities	82.3	84.5
Deferred compensation benefits	15.2	18.6
Other long-term liabilities	66.8	58.5
Total Liabilities	923.0	948.5
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, 2024 - 75.3 million, December 31, 2023 - 75.3 million; shares outstanding: September 30, 2024 - 72.5 million, December 31, 2023 - 73.5 million	18.8	18.8
Capital in excess of par value	23.3	120.2
Retained earnings	3,856.9	3,523.4
Accumulated other comprehensive loss	(136.3)	(143.8)
Treasury stock, at cost (September 30, 2024 - 2.8 million, December 31, 2023 - 1.8 million)	(1,010.6)	(637.6)
Total Equity	2,752.1	2,881.0
Total Liabilities and Equity	$ 3,675.1	$ 3,829.5