Statement of Consolidated Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash from Operations
Net (loss) income	$ (878)	$ (197)	$ 177
Adjustments to reconcile net (loss) income to cash from operations:
Depreciation, depletion and amortization	1,132	1,280	1,372
Deferred income taxes	1,125	34	(35)
Equity income, net of dividends	42	158	104
Impairment of goodwill (A and E)		25
Restructuring and other charges	155	214	314
Net gain from investing activities-asset sales	(156)	(74)	(47)
Net periodic pension benefit cost	304	485	423
Stock-based compensation	86	92	87
Excess tax benefits from stock-based payment arrangements		(9)	(9)
Other	60	(32)	66
Changes in assets and liabilities, excluding effects of acquisitions, divestitures, and foreign currency translation adjustments:
(Increase) decrease in receivables	(238)	212	(312)
(Increase) in inventories	(29)	(64)	(355)
(Increase) decrease in prepaid expenses and other current assets	(76)	46	(25)
Increase (decrease) in accounts payable, trade	232	(90)	256
(Decrease) in accrued expenses	(394)	(437)	(451)
Increase in taxes, including income taxes	93	25	7
Pension contributions	(290)	(470)	(501)
(Increase) in noncurrent assets	(152)	(370)	(42)
(Decrease) in noncurrent liabilities	(248)	(227)	(209)
Cash provided from operations	870	1,582	1,674
Financing Activities
Net change in short-term borrowings (original maturities of three months or less)	(3)	(16)	(2)
Additions to debt (original maturities greater than three months)	1,962	1,901	2,878
Debt issuance costs	(1)	(3)	(17)
Payments on debt (original maturities greater than three months)	(2,734)	(2,030)	(1,723)
Proceeds from exercise of employee stock options	4	25	150
Excess tax benefits from stock-based payment arrangements		9	9
Issuance of mandatory convertible preferred stock (P)			1,211
Dividends paid to shareholders	(228)	(223)	(161)
Distributions to noncontrolling interests	(226)	(106)	(120)
Contributions from noncontrolling interests	51	2	53
Acquisitions of noncontrolling interests			(28)
Net cash transferred from Alcoa Corporation at separation	421
Cash (used for) provided from financing activities	(754)	(441)	2,250
Investing Activities
Capital expenditures	(1,125)	(1,180)	(1,219)
Acquisitions, net of cash acquired (F and N)	10	97	(2,385)
Proceeds from the sale of assets and businesses	692	112	253
Additions to investments	(52)	(134)	(195)
Sales of investments	280	40	57
Net change in restricted cash	14	(20)	(2)
Other	16	25	31
Cash used for investing activities	(165)	(1,060)	(3,460)
Effect of exchange rate changes on cash and cash equivalents	(7)	(39)	(24)
Net change in cash and cash equivalents	(56)	42	440
Cash and cash equivalents at beginning of year	1,362	1,877	1,437
Cash and cash equivalents at end of year	$ 1,863	$ 1,362	$ 1,877