Consolidated Balance Sheet (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 1,191	$ 1,877
Receivables from customers, less allowances of $13 in 2015 and $14 in 2014 (L)	1,469	1,395
Other receivables (L)	709	733
Inventories (F)	3,173	3,082
Prepaid expenses and other current assets	1,180	1,182
Total current assets	7,722	8,269
Properties, plants, and equipment	33,864	35,517
Less: accumulated depreciation, depletion, and amortization	18,576	19,091
Properties, plants, and equipment, net	15,288	16,426
Goodwill (E)	5,050	5,247
Investments	1,931	1,944
Deferred income taxes	2,485	2,754
Other noncurrent assets (E)	3,218	2,759
Total assets	35,694	37,399
Current liabilities:
Short-term borrowings	80	54
Accounts payable, trade	2,934	3,152
Accrued compensation and retirement costs	777	937
Taxes, including income taxes	357	348
Other current liabilities	890	1,021
Long-term debt due within one year	26	29
Total current liabilities	5,064	5,541
Long-term debt, less amount due within one year	8,711	8,769
Accrued pension benefits	3,163	3,291
Accrued other postretirement benefits	2,128	2,155
Other noncurrent liabilities and deferred credits	2,785	2,849
Total liabilities	21,851	22,605
CONTINGENCIES AND COMMITMENTS (G)
Alcoa shareholders' equity:
Preferred stock	55	55
Mandatory convertible preferred stock	3	3
Common stock	1,304	1,304
Additional capital	9,124	9,284
Retained earnings	9,520	9,379
Treasury stock, at cost	(2,841)	(3,042)
Accumulated other comprehensive loss (C)	(5,591)	(4,677)
Total Alcoa shareholders' equity	11,574	12,306
Noncontrolling interests	2,269	2,488
Total equity	13,843	14,794
Total liabilities and equity	$ 35,694	$ 37,399