Statement of Consolidated Operations (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Sales (H)	$ 5,833	$ 6,006
Cost of goods sold (exclusive of expenses below)	4,847	5,098
Selling, general administrative, and other expenses	251	241
Research and development expenses	45	43
Provision for depreciation, depletion, and amortization	361	369
Restructuring and other charges (C)	7	10
Interest expense	115	123
Other income, net (G)	(27)	(16)
Total costs and expenses	5,599	5,868
Income before income taxes	234	138
Provision for income taxes (J)	64	39
Net income	170	99
Less: Net income attributable to noncontrolling interests	21	5
NET INCOME ATTRIBUTABLE TO ALCOA	$ 149	$ 94
EARNINGS PER SHARE ATTRIBUTABLE TO ALCOA COMMON SHAREHOLDERS (I):
Basic	$ 0.14	$ 0.09
Diluted	$ 0.13	$ 0.09
Dividends paid per common share	$ 0.03	$ 0.03