Consolidated Balance Sheet (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 1,202	$ 1,861
Receivables from customers, less allowances of $22 in 2013 and $39 in 2012 (K)	1,354	1,399
Other receivables (K)	677	340
Inventories (D)	2,905	2,825
Prepaid expenses and other current assets	1,099	1,275
Total current assets	7,237	7,700
Properties, plants, and equipment	37,261	38,137
Less: accumulated depreciation, depletion, and amortization	19,150	19,190
Properties, plants, and equipment, net	18,111	18,947
Goodwill	5,113	5,170
Investments	1,848	1,860
Deferred income taxes	3,689	3,790
Other noncurrent assets	2,553	2,712
Total assets	38,551	40,179
Current liabilities:
Short-term borrowings (E)	55	53
Accounts payable, trade	2,920	2,702
Accrued compensation and retirement costs	949	1,058
Taxes, including income taxes	414	366
Other current liabilities	1,205	1,298
Long-term debt due within one year (E)	604	465
Total current liabilities	6,147	5,942
Long-term debt, less amount due within one year	7,700	8,311
Accrued pension benefits	3,558	3,722
Accrued other postretirement benefits	2,541	2,603
Other noncurrent liabilities and deferred credits	2,747	3,078
Total liabilities	22,693	23,656
CONTINGENCIES AND COMMITMENTS (F)
Alcoa shareholders' equity:
Preferred stock	55	55
Common stock	1,178	1,178
Additional capital	7,524	7,560
Retained earnings	11,653	11,689
Treasury stock, at cost	(3,812)	(3,881)
Accumulated other comprehensive loss (B)	(3,783)	(3,402)
Total Alcoa shareholders' equity	12,815	13,199
Noncontrolling interests	3,043	3,324
Total equity	15,858	16,523
Total liabilities and equity	$ 38,551	$ 40,179