Restructuring and Other Charges, Net (Tables)

9 Months Ended

Sep. 30, 2019

Restructuring And Related Activities [Abstract]

Schedule of Restructuring and Other Charges 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,
	2019		2018		2019		2018
Bauxite	$	5	$	1	$	5	$	1
Alumina		15		1		16		3
Aluminum		147		2		607		86
Segment total		167		4		628		90
Corporate		18		173		40		299
Total Restructuring and other charges, net	$	185	$	177	$	668	$	389

Activity Related to Layoff Costs and Other Costs Included Within Restructuring Reserve

The activity related to layoff costs and other costs included within the restructuring reserve balances is as follows:

	Layoff costs			Other costs			Total
Balance at December 31, 2017	$	11		$	34		$	45
Restructuring and other charges, net		2			117			119
Cash payments		(7	)		(95	)		(102	)
Other(1)		(1	)		(14	)		(15	)
Balance at December 31, 2018		5			42			47
Restructuring and other charges, net		52			160			212
Cash payments		(9	)		(84	)		(93	)
Other(1)		(6	)		(5	)		(11	)
Balance at September 30, 2019	$	42		$	113		$	155

⁽¹⁾ Other includes reversals of previously recorded restructuring charges, the effects of foreign currency translation, and reclassifications to other reserves, primarily asset retirement obligations, environmental remediation obligations and pension and/or other postretirement benefit costs.