Statement of Consolidated Cash Flows (unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
CASH FROM OPERATIONS
Net loss	$ (178)	$ (546)
Adjustments to reconcile net loss to cash from operations:
Depreciation, depletion, and amortization	483	469
Deferred income taxes	(8)	(156)
Equity loss, net of dividends	2	161
Restructuring and other charges, net (D)	250	195
Net loss from investing activities - asset sales (P)	18	18
Net periodic pension benefit cost (L)	8	4
Stock-based compensation	31	27
Loss on mark-to-market derivative financial contracts	16	31
Other	33	67
Changes in assets and liabilities, excluding effects of divestitures and foreign currency translation adjustments:
(Increase) decrease in receivables	(202)	108
Decrease in inventories	79	166
(Increase) decrease in prepaid expenses and other current assets	(12)	53
Decrease in accounts payable, trade	(149)	(275)
Decrease in accrued expenses	(88)	(119)
Increase (decrease) in taxes, including income taxes	55	(52)
Pension contributions (L)	(14)	(20)
Increase in noncurrent assets	(4)	(179)
Decrease in noncurrent liabilities	(113)	(59)
CASH PROVIDED FROM (USED FOR) OPERATIONS	207	(107)
FINANCING ACTIVITIES
Additions to debt	989	80
Payments on debt	(285)	(39)
Proceeds from the exercise of employee stock options	0	1
Dividends paid on Alcoa preferred stock	0	0
Dividends paid on Alcoa common stock	(63)	(54)
Payments related to tax withholding on stock-based compensation awards	(15)	(34)
Financial contributions for the divestiture of businesses (C)	(19)	(44)
Contributions from noncontrolling interest	65	164
Distributions to noncontrolling interest	(49)	(24)
Acquisition of noncontrolling interest (C)	(23)	0
Other	(5)	1
CASH PROVIDED FROM FINANCING ACTIVITIES	595	51
INVESTING ACTIVITIES
Capital expenditures	(411)	(343)
Proceeds from the sale of assets	2	2
Additions to investments	(30)	(51)
Other	5	4
CASH USED FOR INVESTING ACTIVITIES	(434)	(388)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS AND RESTRICTED CASH	(5)	0
Net change in cash and cash equivalents and restricted cash	363	(444)
Cash and cash equivalents and restricted cash at beginning of year	1,047	1,474
CASH AND CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD	$ 1,410	$ 1,030