Consolidated Balance Sheet - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents (U)	$ 2,150	$ 1,863
Receivables from customers, less allowances of $8 in 2017 and $13 in 2016 (R)	1,035	974
Other receivables (C and R)	339	477
Inventories (G)	2,480	2,253
Prepaid expenses and other current assets	374	325
Total current assets	6,378	5,892
Properties, plants, and equipment, net (H)	5,594	5,499
Goodwill (A and E)	4,535	5,148
Deferred income taxes (Q)	743	1,234
Investment in common stock of Alcoa Corporation (C and U)	0	1,020
Intangibles, net (E)	987	988
Other noncurrent assets	481	257
Total Assets	18,718	20,038
Current liabilities:
Accounts payable, trade	1,839	1,744
Accrued compensation and retirement costs	399	398
Taxes, including income taxes	75	85
Accrued interest payable	124	153
Other current liabilities	349	329
Short-term debt (I and U)	38	40
Total current liabilities	2,824	2,749
Long-term debt, less amount due within one year (I and U)	6,806	8,044
Accrued pension benefits (T)	2,564	2,345
Accrued other postretirement benefits (T)	841	889
Other noncurrent liabilities and deferred credits (J)	759	870
Total liabilities	13,794	14,897
Arconic shareholders’ equity:
Preferred stock (O)	55	55
Mandatory convertible preferred stock (O)	0	3
Common stock (O)	481	438
Additional capital	8,266	8,214
Accumulated deficit	(1,248)	(1,027)
Accumulated other comprehensive loss (B)	(2,644)	(2,568)
Total Arconic shareholders’ equity	4,910	5,115
Noncontrolling interests	14	26
Total equity	4,924	5,141
Total Liabilities and Equity	$ 18,718	$ 20,038