Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 119.1	$ 35.2
Accounts receivable, net	245.0	245.6
Inventories, net	313.4	291.0
Prepaid expenses and other current assets	30.0	35.2
Total current assets	707.5	607.0
Property, plant and equipment	2,662.3	2,378.4
Less accumulated depreciation	(836.8)	(752.8)
Net property, plant and equipment	1,825.5	1,625.6
Goodwill and other intangible assets	74.0	72.2
Investments in affiliated companies	67.1	53.1
Other assets	63.1	42.7
Total assets	2,737.2	2,400.6
Current liabilities:
Current portions of capital lease and term loan	4.2	4.3
Accounts payable	128.6	137.3
Accrued liabilities	125.0	130.3
Total current liabilities	257.8	271.9
Commitments and contingencies (see Note 11)
Long-term debt	829.6	684.4
Other non-current liabilities	223.1	199.4
Total liabilities	1,310.5	1,155.7
Stockholders' equity:
Common stock, $0.01 par value, 200.0 shares authorized, 107.5 shares and 106.7 shares issued at September 30, 2017 and December 31, 2016, respectively	1.1	1.1
Additional paid-in capital	766.5	738.8
Retained earnings	1,419.1	1,254.7
Accumulated other comprehensive loss	(57.2)	(174.4)
Total stockholders' equity including treasury stock value	2,129.5	1,820.2
Less – Treasury stock, at cost, 17.7 shares at September 30, 2017, and 15.3 shares at December 31, 2016, respectively.	(702.8)	(575.3)
Total stockholders' equity	1,426.7	1,244.9
Total liabilities and stockholders' equity	$ 2,737.2	$ 2,400.6