Restructuring and Other Charges, Net (Tables)

6 Months Ended

Jun. 30, 2020

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:

	Second quarter ended June 30,					Six months ended June 30,
	2020		2019			2020			2019
Bauxite	$	—	$	(1	)	$	—		$	—
Alumina		—		—			2			1
Aluminum		37		353			39			460
Segment total		37		352			41			461
Corporate		—		18			(2	)		22
Total Restructuring and other charges, net	$	37	$	370		$	39		$	483

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, 2018	$	5		$	42		$	47
Restructuring and other charges, net		51			161			212
Cash payments		(19	)		(99	)		(118	)
Reversals and other		(2	)		(2	)		(4	)
Balance at December 31, 2019		35			102			137
Restructuring and other charges, net		19			24			43
Cash payments		(28	)		(43	)		(71	)
Reversals and other		(1	)		(3	)		(4	)
Balance at June 30, 2020	$	25		$	80		$	105