CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 576.2	$ 615.5
Accounts receivable, net	480.5	385.3
Inventories	345.2	321.3
Other current assets	75.1	51.6
Total current assets	1,477.0	1,373.7
Property, plant and equipment	2,098.4	2,035.5
Less: accumulated depreciation and amortization	1,125.3	1,092.3
Property, plant and equipment, net	973.1	943.2
Operating lease right-of-use assets	62.8	68.3
Investments in affiliated companies	211.7	214.7
Goodwill	110.0	111.1
Intangible assets, net	27.8	30.5
Deferred income taxes	28.8	16.0
Pension and other postretirement benefits	16.0	12.9
Other noncurrent assets	26.3	23.4
Total Assets	2,933.5	2,793.8
Current liabilities:
Notes payable and other current debt	2.3	2.3
Accounts payable	205.1	213.1
Pension and other postretirement benefits	2.4	2.3
Accrued salaries, wages and benefits	87.7	106.0
Income taxes payable	17.7	26.0
Operating lease liabilities	9.3	10.1
Other current liabilities	148.1	143.6
Total current liabilities	472.6	503.4
Long-term debt	251.8	252.9
Deferred income taxes	12.2	10.4
Pension and other postretirement benefits	54.0	57.5
Operating lease liabilities	56.0	60.4
Deferred compensation benefits	24.7	22.9
Other long-term liabilities	29.6	31.8
Total Liabilities	900.9	939.3
Commitments and contingencies (Note 17)
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: 75.3 million and 75.3 million; shares outstanding: 74.0 million and 74.0 million	18.8	18.8
Capital in excess of par value	248.0	267.3
Retained earnings	2,160.2	1,846.7
Accumulated other comprehensive loss	(133.2)	(110.6)
Treasury stock, at cost (1.3 million and 1.3 million shares)	(261.2)	(167.7)
Total Equity	2,032.6	1,854.5
Total Liabilities and Equity	$ 2,933.5	$ 2,793.8