Statement of Consolidated Operations (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Sales (I)	$ 5,833	$ 6,419	$ 17,802	$ 18,962
Cost of goods sold (exclusive of expenses below)	5,266	5,290	15,518	15,252
Selling, general administrative, and other expenses	234	261	720	759
Research and development expenses	51	47	141	136
Provision for depreciation, depletion, and amortization	366	376	1,098	1,112
Restructuring and other charges (C)	2	9	27	49
Interest expense	124	125	370	399
Other (income) expenses, net (H)	(2)	31	4	(47)
Total costs and expenses	6,041	6,139	17,878	17,660
(Loss) income from continuing operations before income taxes	(208)	280	(76)	1,302
(Benefit) provision for income taxes (K)	(33)	55	19	329
(Loss) income from continuing operations	(175)	225	(95)	973
Loss from discontinued operations				(5)
Net (loss) income	(175)	225	(95)	968
Less: Net (loss) income attributable to noncontrolling interests	(32)	53	(44)	166
Net (loss) income	(143)	172	(51)	802
AMOUNTS ATTRIBUTABLE TO ALCOA COMMON SHAREHOLDERS:
(Loss) income from continuing operations	(143)	172	(51)	807
Loss from discontinued operations				(5)
Net (loss) income	$ (143)	$ 172	$ (51)	$ 802
Basic:
(Loss) income from continuing operations	$ (0.13)	$ 0.16	$ (0.05)	$ 0.76
Loss from discontinued operations				$ (0.01)
Net (loss) income	$ (0.13)	$ 0.16	$ (0.05)	$ 0.75
Diluted:
(Loss) income from continuing operations	$ (0.13)	$ 0.15	$ (0.05)	$ 0.71
Loss from discontinued operations
Net (loss) income	$ (0.13)	$ 0.15	$ (0.05)	$ 0.71
Dividends paid per common share	$ 0.03	$ 0.03	$ 0.09	$ 0.09