Restructuring and Other Charges, Net (Tables)

9 Months Ended

Sep. 30, 2023

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,
	2023			2022			2023		2022
Alumina (1)	$	6		$	(3	)	$	8	$	(28	)
Aluminum		(3	)		—			162		73
Segment total		3			(3	)		170		45
Corporate		19			655			25		657
Total Restructuring and other charges, net	$	22		$	652		$	195	$	702

(1)Beginning in January 2023, the Company changed its operating segments, by combining the Bauxite and Alumina segments, and reported its financial results in the following two segments: (i) Alumina and (ii) Aluminum (see Note E).

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, 2021	$	3		$	90		$	93
Restructuring and other charges, net		1			73			74
Cash payments		(2	)		(37	)		(39	)
Reversals and other		(1	)		(10	)		(11	)
Balance at December 31, 2022		1			116			117
Restructuring and other charges, net		10			49			59
Cash payments		(4	)		(108	)		(112	)
Reversals and other		—			2			2
Balance at September 30, 2023	$	7		$	59		$	66