Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 679.5	$ 361.5
Short-term marketable debt securities	87.9
Accounts receivable, net of allowance for doubtful accounts and customer deductions of $12.6 million and $13.6 million as of December 31, 2019 and 2018, respectively	845.6	901.9
Inventories	794.1	795.6
Prepaid expenses and other current assets	44.8	39.4
Federal and state income taxes receivable	26.5	16.7
Total current assets	2,478.4	2,115.1
Property, plant and equipment, net	3,151.7	3,108.6
Goodwill	918.7	917.3
Other intangible assets, net	338.8	378.2
Operating lease right-of-use assets	234.3
Long-term marketable debt securities	58.1
Other long-term assets	55.8	50.5
Total assets	7,235.8	6,569.7
Current liabilities:
Operating lease obligations	62.6
Finance lease obligations	1.5	1.4
Accounts payable	351.9	382.2
Dividends payable	76.6	76.1
Accrued liabilities	217.5	222.4
Accrued interest	13.7	11.5
Total current liabilities	723.8	693.6
Long-term liabilities:
Long-term debt	2,476.8	2,483.7
Operating lease obligations	177.6
Finance lease obligations	16.0	17.6
Deferred income taxes	340.1	285.2
Compensation and benefits	375.5	357.5
Other long-term liabilities	55.0	59.7
Total long-term liabilities	3,441.0	3,203.7
Commitments and contingent liabilities
Stockholders' equity:
Common stock, par value $0.01 per share, 300.0 million shares authorized, 94.7 million and 94.5 million shares issued as of December 31, 2019 and 2018, respectively	0.9	0.9
Additional paid in capital	524.8	494.5
Retained earnings	2,704.8	2,315.8
Accumulated other comprehensive loss	(159.5)	(138.8)
Total stockholders' equity	3,071.0	2,672.4
Total liabilities and stockholders' equity	$ 7,235.8	$ 6,569.7