CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 483.7	$ 615.5
Accounts receivable, net	465.7	385.3
Inventories	310.2	321.3
Other current assets	67.4	51.6
Total current assets	1,327.0	1,373.7
Property, plant and equipment	2,028.6	2,035.5
Less: accumulated depreciation and amortization	1,097.8	1,092.3
Property, plant and equipment, net	930.8	943.2
Operating lease right-of-use assets	64.5	68.3
Investments in affiliated companies	211.9	214.7
Goodwill	109.5	111.1
Intangible assets, net	28.7	30.5
Deferred income taxes	27.9	16.0
Pension and other postretirement benefits	14.6	12.9
Other noncurrent assets	24.8	23.4
Total Assets	2,739.7	2,793.8
Current liabilities:
Notes payable and other current debt	2.3	2.3
Accounts payable	204.3	213.1
Pension and other postretirement benefits	2.4	2.3
Accrued salaries, wages and benefits	69.9	106.0
Income taxes payable	49.7	26.0
Operating lease liabilities	9.4	10.1
Other current liabilities	144.8	143.6
Total current liabilities	482.8	503.4
Long-term debt	252.3	252.9
Deferred income taxes	12.2	10.4
Pension and other postretirement benefits	55.2	57.5
Operating lease liabilities	57.4	60.4
Deferred compensation benefits	22.5	22.9
Other long-term liabilities	28.3	31.8
Total Liabilities	910.7	939.3
Commitments and contingencies
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: 73.8 million and 74.0 million	18.8	18.8
Capital in excess of par value	246.7	267.3
Retained earnings	1,985.4	1,846.7
Accumulated other comprehensive loss	(140.2)	(110.6)
Treasury stock, at cost (1.5 million and 1.3 million shares)	(281.7)	(167.7)
Total Equity	1,829.0	1,854.5
Total Liabilities and Equity	$ 2,739.7	$ 2,793.8