Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 974.6	$ 679.5
Short-term marketable debt securities	105.6	87.9
Accounts receivable, net of allowance for credit losses and customer deductions of $10.6 million and $12.6 million as of December 31, 2020 and 2019, respectively	832.4	845.6
Inventories	787.9	794.1
Prepaid expenses and other current assets	44.7	44.8
Federal and state income taxes receivable	5.1	26.5
Total current assets	2,750.3	2,478.4
Property, plant and equipment, net	3,193.4	3,151.7
Goodwill	863.5	918.7
Other intangible assets, net	295.9	338.8
Operating lease right-of-use assets	234.2	234.3
Long-term marketable debt securities	42.7	58.1
Other long-term assets	53.2	55.8
Total assets	7,433.2	7,235.8
Current liabilities:
Operating lease obligations	68.9	62.6
Finance lease obligations	1.6	1.5
Accounts payable	387.0	351.9
Dividends payable	97.0	76.6
Accrued liabilities	216.2	217.5
Accrued interest	11.9	13.7
Total current liabilities	782.6	723.8
Long-term liabilities:
Long-term debt	2,479.4	2,476.8
Operating lease obligations	173.6	177.6
Finance lease obligations	14.4	16.0
Deferred income taxes	379.4	340.1
Compensation and benefits	298.3	375.5
Other long-term liabilities	59.2	55.0
Total long-term liabilities	3,404.3	3,441.0
Commitments and contingent liabilities
Stockholders' equity:
Common stock, par value $0.01 per share, 300.0 million shares authorized, 94.8 million and 94.7 million shares issued as of December 31, 2020 and 2019, respectively	0.9	0.9
Additional paid in capital	554.4	524.8
Retained earnings	2,835.5	2,704.8
Accumulated other comprehensive loss	(144.5)	(159.5)
Total stockholders' equity	3,246.3	3,071.0
Total liabilities and stockholders' equity	$ 7,433.2	$ 7,235.8