Restructuring and Other Charges, Net (Tables)

9 Months Ended

Sep. 30, 2024

Restructuring and Related Activities [Abstract]

Schedule of Restructuring and Other Charges, Net by Reportable Segments, Pretax

Alcoa Corporation does not include Restructuring and other charges, net in the results of its reportable segments. The impact of allocating such charges to segment results would have been as follows:

	Third quarter ended September 30,					Nine months ended September 30,
	2024		2023			2024		2023
Alumina	$	—	$	6		$	205	$	8
Aluminum		—		(3	)		—		162
Segment total		—		3			205		170
Corporate		30		19			45		25
Total Restructuring and other charges, net	$	30	$	22		$	250	$	195

Activity and Reserve Balances for Restructuring Charges

Activity and reserve balances for restructuring charges were as follows:

	Severance and employee termination costs			Other costs			Total
Balance at December 31, 2022	$	1		$	116		$	117
Restructuring and other charges, net		11			55			66
Cash payments		(6	)		(118	)		(124	)
Reversals and other		—			4			4
Balance at December 31, 2023		6			57			63
Restructuring and other charges, net		43			173			216
Cash payments		(35	)		(105	)		(140	)
Reversals and other		1			6			7
Balance at September 30, 2024	$	15		$	131		$	146