CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Current Assets:
Cash and cash equivalents	$ 153.5	$ 141.6
Accounts receivable, net	588.3	545.3
Short-term contract assets	51.6	0.0
Inventories, net	1,239.8	1,176.1
Prepaid expenses and other current assets	89.2	52.7
Total current assets	2,122.4	1,915.7
Property, plant and equipment, net	2,472.6	2,495.7
Goodwill	536.4	531.4
Other assets	257.6	242.6
Total assets	5,389.0	5,185.4
Current Liabilities:
Accounts payable	416.1	420.1
Accrued liabilities	228.7	282.4
Short-term contract liabilities	69.2	0.0
Short-term debt and current portion of long-term debt	16.6	10.1
Total current liabilities	730.6	712.6
Long-term debt	1,535.3	1,530.6
Accrued postretirement benefits	301.1	317.8
Pension liabilities	652.7	697.0
Deferred income taxes	12.1	9.7
Long-term contract liabilities	7.3	0.0
Other long-term liabilities	66.7	73.2
Total liabilities	3,305.8	3,340.9
ATI Stockholders' Equity:
Preferred stock, par value $0.10: authorized-50,000,000 shares; issued-none	0.0	0.0
Common stock, par value $0.10: authorized-500,000,000 shares; issued-126,695,171 shares at September 30, 2018 and December 31, 2017; outstanding-125,684,396 shares at September 30, 2018 and 125,857,197 shares at December 31, 2017	12.7	12.7
Additional paid-in capital	1,608.5	1,596.3
Retained earnings	1,380.9	1,184.3
Treasury stock: 1,010,775 shares at September 30, 2018 and 837,974 shares at December 31, 2017	(30.6)	(26.1)
Accumulated other comprehensive loss, net of tax	(991.3)	(1,027.8)
Total ATI stockholders’ equity	1,980.2	1,739.4
Noncontrolling interests
Noncontrolling interests	103.0	105.1
Total Equity	2,083.2	1,844.5
Total Liabilities and Equity	$ 5,389.0	$ 5,185.4