Consolidated Balance Sheets - USD ($) $ in Millions		Dec. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents		$ 685.0	$ 648.0
Short-term marketable debt securities ($102.0 million and $93.5 million measured at fair value as of December 31, 2024 and December 31, 2023, respectively)		102.0	493.5
Accounts receivable, net of allowance for credit losses and customer deductions of $20.6 million and $13.1 million as of December 31, 2024 and December 31, 2023, respectively		1,144.0	1,033.2
Inventories		1,124.9	1,013.1
Prepaid expenses and other current assets		166.9	62.3
Federal and state income taxes receivable		10.2	4.3
Total current assets		3,233.0	3,254.4
Property, plant and equipment, net		4,039.0	3,863.8
Goodwill		922.4	922.4
Other intangible assets, net		191.9	229.6
Operating lease right-of-use assets		276.9	279.6
Long-term marketable debt securities		65.2	64.1
Other long-term assets		104.8	67.2
Total assets		8,833.2	8,681.1
Current liabilities:
Current maturities of long-term debt	[1]	0.0	399.6
Operating lease obligations		80.5	78.6
Finance lease obligations		2.1	2.0
Accounts payable		430.3	402.4
Dividends payable		116.3	115.9
Accrued liabilities		362.9	253.5
Accrued interest		9.5	13.7
Total current liabilities		1,001.6	1,265.7
Long-term liabilities:
Total long-term debt		2,474.2	2,472.2
Operating lease obligations		208.0	212.1
Finance lease obligations		6.7	8.7
Deferred income taxes		561.9	558.0
Compensation and benefits		95.9	106.4
Other long-term liabilities		80.9	60.7
Total long-term liabilities		3,427.6	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 December 31, 2024 and December 31, 2023, respectively		0.9	0.9
Additional paid in capital		669.8	620.1
Retained earnings		3,776.7	3,447.2
Accumulated other comprehensive loss		(43.4)	(70.9)
Total stockholders' equity		4,404.0	3,997.3
Total liabilities and stockholders' equity		$ 8,833.2	$ 8,681.1

[1] As of December 31, 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.