Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 983.4	$ 974.6
Short-term marketable debt securities	102.5	105.6
Accounts receivable, net of allowance for credit losses and customer deductions of $12.8 million as of March 31, 2021 and $10.6 million December 31, 2020, respectively	908.6	832.4
Inventories	799.6	787.9
Prepaid expenses and other current assets	62.8	44.7
Federal and state income taxes receivable		5.1
Total current assets	2,856.9	2,750.3
Property, plant, and equipment, net	3,212.5	3,193.4
Goodwill	863.5	863.5
Other intangible assets, net	286.3	295.9
Operating lease right-of-use assets	231.5	234.2
Long-term marketable debt securities	47.0	42.7
Other long-term assets	51.3	53.2
Total assets	7,549.0	7,433.2
Current liabilities:
Operating lease obligations	69.3	68.9
Finance lease obligations	1.7	1.6
Accounts payable	402.5	387.0
Dividends payable	97.6	97.0
Accrued liabilities	184.0	216.2
Accrued interest	28.1	11.9
Federal and state income taxes payable	22.6
Total current liabilities	805.8	782.6
Long-term liabilities:
Long-term debt	2,480.0	2,479.4
Operating lease obligations	170.0	173.6
Finance lease obligations	14.0	14.4
Deferred income taxes	392.6	379.4
Compensation and benefits	295.8	298.3
Other long-term liabilities	59.6	59.2
Total long-term liabilities	3,412.0	3,404.3
Commitments and contingent liabilities
Stockholders' equity:
Common stock, par value $0.01 per share, 300.0 million shares authorized, 95.0 million and 94.8 million shares issued as of March 31, 2021 and December 31, 2020, respectively	1.0	0.9
Additional paid in capital	566.0	554.4
Retained earnings	2,906.3	2,835.5
Accumulated other comprehensive loss	(142.1)	(144.5)
Total stockholders' equity	3,331.2	3,246.3
Total liabilities and stockholders' equity	$ 7,549.0	$ 7,433.2