Restructuring and Other Charges, Net (Tables)

3 Months Ended

Mar. 31, 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:

	First quarter ended March 31,
	2024		2023
Alumina	$	197	$	1
Aluminum		—		146
Segment total		197		147
Corporate		5		2
Total Restructuring and other charges, net	$	202	$	149

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			139			182
Cash payments		(1	)		(15	)		(16	)
Reversals and other		—			(1	)		(1	)
Balance at March 31, 2024	$	48		$	180		$	228