Condensed Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 22.7	$ 70.9
Accounts receivable, net	289.8	233.5
Inventories	314.4	290.1
Prepaid expenses and other current assets	84.3	87.2
Total current assets	711.2	681.7
Property, plant and equipment	1,891.9	1,868.7
Less accumulated depreciation	(630.7)	(630.5)
Property, plant and equipment, net	1,261.2	1,238.2
Goodwill and intangible assets	59.1	59.8
Investments in affiliated companies	32.0	34.2
Other assets	23.7	22.5
Total assets	2,087.2	2,036.4
Current liabilities:
Short-term borrowings	0.2	1.3
Accounts payable	140.1	175.0
Accrued liabilities	139.2	134.3
Total current liabilities	279.5	310.6
Long-term debt	480.0	415.0
Other non-current liabilities	162.2	160.9
Total liabilities	921.7	886.5
Stockholders’ equity:
Common stock, $0.01 par value, 200.0 shares authorized, 105.8 and 104.8 shares issued at March 31, 2015 and December 31, 2014, respectively	1.1	1.0
Additional paid-in capital	706.8	678.5
Retained earnings	904.0	845.5
Accumulated other comprehensive loss	(135.0)	(69.7)
Total stockholders' equity including treasury stock value	1,476.9	1,455.3
Less — Treasury stock, at cost, 9.5 shares at March 31, 2015 and 9.3 shares at December 31, 2014	(311.4)	(305.4)
Total stockholders’ equity	1,165.5	1,149.9
Total liabilities and stockholders’ equity	$ 2,087.2	$ 2,036.4