Consolidated Balance Sheets Unaudited - USD ($) $ in Millions		Sep. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents		$ 676.6	$ 648.0
Short-term marketable debt securities ($95.0 million and $93.5 million measured at fair value as of September 30, 2024 and December 31, 2023, respectively)		95.0	493.5
Accounts receivable, net of allowance for credit losses and customer deductions of $19.4 million and $13.1 million as of September 30, 2024 and December 31, 2023, respectively		1,216.1	1,033.2
Inventories		1,061.9	1,013.1
Prepaid expenses and other current assets		191.8	62.3
Federal and state income taxes receivable		0.0	4.3
Total current assets		3,241.4	3,254.4
Property, plant, and equipment, net		3,982.3	3,863.8
Goodwill		922.4	922.4
Other intangible assets, net		201.3	229.6
Operating lease right-of-use assets		260.3	279.6
Long-term marketable debt securities		69.7	64.1
Other long-term assets		76.4	67.2
Total assets		8,753.8	8,681.1
Current liabilities:
Current maturities of long-term debt	[1]	0.0	399.6
Operating lease obligations		81.7	78.6
Finance lease obligations		2.1	2.0
Accounts payable		459.9	402.4
Dividends payable		115.8	115.9
Accrued liabilities		393.3	253.5
Accrued interest		32.5	13.7
Federal and state income taxes payable		15.2	0.0
Total current liabilities		1,100.5	1,265.7
Long-term liabilities:
Long-term debt		2,473.7	2,472.2
Operating lease obligations		189.4	212.1
Finance lease obligations		7.2	8.7
Deferred income taxes		540.5	558.0
Compensation and benefits		98.5	106.4
Other long-term liabilities		80.4	60.7
Total long-term liabilities		3,389.7	3,418.1
Commitments and contingent liabilities (Note 19)
Stockholders' equity:
Common stock, par value $0.01 per share, 300.0 million shares authorized, 89.8 million and 89.6 million shares issued as of September 30, 2024 and December 31, 2023, respectively		0.9	0.9
Additional paid in capital		660.6	620.1
Retained earnings		3,669.1	3,447.2
Accumulated other comprehensive loss		(67.0)	(70.9)
Total stockholders' equity		4,263.6	3,997.3
Total liabilities and stockholders' equity		$ 8,753.8	$ 8,681.1

[1] As of September 30, 2024, there are no unamortized debt issuance costs associated with the current portion of long-term debt, as the 2024 senior notes due September 2024 were repaid on September 15, 2024. As of December 31, 2023, the current portion of long-term debt excludes unamortized debt issuance costs of $0.3 million.