Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 367.7	$ 320.0
Short-term marketable debt securities	95.6	85.2
Accounts receivable, net of allowance for credit losses and customer deductions of $20.2 million and $14.3 million as of September 30, 2022 and December 31, 2021, respectively	1,031.4	1,031.8
Inventories	1,003.4	977.3
Prepaid expenses and other current assets	87.3	58.3
Federal and state income taxes receivable	0.0	35.7
Total current assets	2,585.4	2,508.3
Property, plant, and equipment, net	3,896.6	3,900.0
Goodwill	922.4	922.4
Other intangible assets, net	258.3	267.9
Operating lease right-of-use assets	288.6	298.3
Long-term marketable debt securities	56.9	64.9
Other long-term assets	40.8	42.0
Total assets	8,049.0	8,003.8
Current liabilities:
Operating lease obligations	72.7	72.2
Finance lease obligations	1.9	1.9
Accounts payable	410.5	410.4
Dividends payable	115.7	115.5
Accrued liabilities	184.7	263.7
Accrued interest	25.5	11.8
Federal and state income taxes payable	17.9	0.0
Total current liabilities	828.9	875.5
Long-term liabilities:
Long-term debt	2,474.1	2,473.6
Operating lease obligations	225.1	234.6
Finance lease obligations	10.3	10.8
Deferred income taxes	546.2	543.0
Compensation and benefits	148.5	141.8
Other long-term liabilities	58.2	57.4
Total long-term liabilities	3,462.4	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 March 31, 2023 and December 31, 2022, respectively	0.9	0.9
Additional paid in capital	597.8	581.8
Retained earnings	3,259.3	3,186.8
Accumulated other comprehensive loss	(100.3)	(102.4)
Total stockholders' equity	3,757.7	3,667.1
Total liabilities and stockholders' equity	$ 8,049.0	$ 8,003.8