Statement Of Consolidated Operations (USD $) In Millions, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Statement Of Consolidated Operations
Sales (J)	$ 6,585	$ 5,187	$ 12,543	$ 10,074
Cost of goods sold (exclusive of expenses below)	5,247	4,210	9,962	8,223
Selling, general administrative, and other expenses	253	208	498	447
Research and development expenses	46	45	89	84
Provision for depreciation, depletion, and amortization	375	363	736	721
Restructuring and other charges (D)	34	30	40	217
Interest expense	163	119	274	237
Other (income) expenses, net (I)	(50)	(16)	(78)	5
Total costs and expenses	6,068	4,959	11,521	9,934
Income from continuing operations before income taxes	517	228	1,022	140
Provision for income taxes (M)	136	57	274	141
Income (loss) from continuing operations	381	171	748	(1)
Loss from discontinued operations (C)	(4)	(1)	(5)	(8)
Net income (loss)	377	170	743	(9)
Less: Net income attributable to noncontrolling interests	55	34	113	56
NET INCOME (LOSS) ATTRIBUTABLE TO ALCOA	322	136	630	(65)
AMOUNTS ATTRIBUTABLE TO ALCOA COMMON SHAREHOLDERS:
Income (loss) from continuing operations	326	137	635	(57)
Loss from discontinued operations	(4)	(1)	(5)	(8)
Net income (loss)	$ 322	$ 136	$ 630	$ (65)
Basic:
Income (loss) from continuing operations	$ 0.31	$ 0.13	$ 0.60	$ (0.06)
Loss from discontinued operations	$ (0.01)		$ (0.01)
Net income (loss)	$ 0.30	$ 0.13	$ 0.59	$ (0.06)
Diluted:
Income (loss) from continuing operations	$ 0.28	$ 0.13	$ 0.56	$ (0.06)
Loss from discontinued operations			$ (0.01)
Net income (loss)	$ 0.28	$ 0.13	$ 0.55	$ (0.06)
Dividends paid per common share	$ 0.03	$ 0.03	$ 0.06	$ 0.06