CONSOLIDATED BALANCE SHEETS (USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current Assets:
Cash and cash equivalents	$ 535.7	$ 304.6
Accounts receivable, net of allowances for doubtful accounts of $5.2 and $5.5 as of September 30, 2013 and December 31, 2012	576.9	613.3
Inventories, net	1,344.9	1,536.6
Prepaid expenses and other current assets	120.6	56.1
Current assets of discontinued operations	115.4	0
Total current assets	2,693.5	2,510.6
Property, plant and equipment, net	2,744.7	2,559.9
Cost in excess of net assets acquired	728.1	740.1
Deferred income taxes	0	71.5
Other assets	348.0	365.7
Non-current assets of discontinued operations	85.0	0
Total assets	6,599.3	6,247.8
Current Liabilities:
Accounts payable	401.9	499.9
Accrued liabilities	304.9	330.5
Deferred income taxes	8.2	24.0
Short-term debt and current portion of long-term debt	419.9	17.1
Current liabilities of discontinued operations	33.7	0
Total current liabilities	1,168.6	871.5
Long-term debt	1,542.2	1,463.0
Accrued postretirement benefits	475.0	495.2
Pension liabilities	702.4	721.1
Deferred income taxes	52.1	0
Other long-term liabilities	94.9	109.9
Total liabilities	4,035.2	3,660.7
ATI Stockholders' Equity:
Preferred stock, par value $0.10: authorized-50,000,000 shares; issued-none	0	0
Common stock, par value $0.10: authorized-500,000,000 shares; issued-109,695,171 shares at September 30, 2013 and December 31, 2012; outstanding- 108,007,487 shares at September 30, 2013 and 107,398,963 shares at December 31, 2012	11.0	11.0
Additional paid-in capital	1,181.2	1,181.7
Retained earnings	2,335.9	2,427.6
Treasury stock: 1,687,684 shares at September 30, 2013 and 2,296,208 shares at December 31, 2012	(78.8)	(111.3)
Accumulated other comprehensive loss, net of tax	(982.6)	(1,029.4)
Total ATI stockholders’ equity	2,466.7	2,479.6
Noncontrolling interests
Noncontrolling interests	97.4	107.5
Total Equity	2,564.1	2,587.1
Total Liabilities and Equity	$ 6,599.3	$ 6,247.8