Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 477.1	$ 320.0
Short-term marketable debt securities	101.9	85.2
Accounts receivable, net of allowance for credit losses and customer deductions of $13.8 million and $19.6 million as of June 30, 2023 and December 31, 2022, respectively	1,023.9	1,031.8
Inventories	992.2	977.3
Prepaid expenses and other current assets	75.5	58.3
Federal and state income taxes receivable	0.0	35.7
Total current assets	2,670.6	2,508.3
Property, plant, and equipment, net	3,886.7	3,900.0
Goodwill	922.4	922.4
Other intangible assets, net	248.7	267.9
Operating lease right-of-use assets	286.2	298.3
Long-term marketable debt securities	50.6	64.9
Other long-term assets	41.3	42.0
Total assets	8,106.5	8,003.8
Current liabilities:
Operating lease obligations	75.0	72.2
Finance lease obligations	1.9	1.9
Accounts payable	365.8	410.4
Dividends payable	115.4	115.5
Accrued liabilities	219.9	263.7
Accrued interest	11.7	11.8
Federal and state income taxes payable	8.0	0.0
Total current liabilities	797.7	875.5
Long-term liabilities:
Long-term debt	2,474.7	2,473.6
Operating lease obligations	221.9	234.6
Finance lease obligations	9.8	10.8
Deferred income taxes	538.6	543.0
Compensation and benefits	153.5	141.8
Other long-term liabilities	61.7	57.4
Total long-term liabilities	3,460.2	3,461.2
Commitments and contingent liabilities
Stockholders' equity:
Common stock, par value $0.01 per share, 300.0 million shares authorized, 89.9 million and 89.7 million shares issued as of June 30, 2023 and December 31, 2022, respectively	0.9	0.9
Additional paid in capital	607.4	581.8
Retained earnings	3,339.0	3,186.8
Accumulated other comprehensive loss	(98.7)	(102.4)
Total stockholders' equity	3,848.6	3,667.1
Total liabilities and stockholders' equity	$ 8,106.5	$ 8,003.8