CONSOLIDATED BALANCE SHEETS (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Current Assets:
Cash and cash equivalents	$ 380.6	$ 432.3
Accounts receivable, net	709.1	545.4
Total inventories, net	1,384.3	1,024.5
Prepaid expenses and other current assets	95.5	112.9
Total Current Assets	2,569.5	2,115.1
Property, plant and equipment, net	2,368.8	1,989.3
Cost in excess of net assets acquired	737.7	206.8
Deferred income taxes	0	0
Other assets	370.9	182.4
Total Assets	6,046.9	4,493.6
Current Liabilities:
Accounts payable	490.7	394.1
Accrued liabilities	320.3	249.9
Deferred income taxes	23.5	5.6
Debt Current	27.3	141.4
Total Current Liabilities	861.8	791.0
Long-term debt	1,482.0	921.9
Accrued postretirement benefits	488.1	423.8
Pension liabilities	508.9	58.3
Deferred income taxes	9.8	68.6
Other long-term liabilities	124.7	100.6
Total Liabilities	3,475.3	2,364.2
ATI Stockholders' Equity:
Preferred stock, par value $0.10: authorized-50,000,000 shares; issued-none	0	0
Common stock	11.0	10.2
Additional paid-in capital	1,207.1	658.9
Retained earnings	2,361.5	2,224.8
Treasury stock	(162.7)	(188.0)
Accumulated other comprehensive loss, net of tax	(941.6)	(665.1)
Total ATI stockholders' equity	2,475.3	2,040.8
Noncontrolling interests
Noncontrolling interests	96.3	88.6
Total Stockholders' Equity	2,571.6	2,129.4
Total Liabilities and Equity	$ 6,046.9	$ 4,493.6