Restructuring and Other Charges (Tables)

9 Months Ended

Sep. 30, 2017

Restructuring and Related Activities [Abstract]

Schedule of Restructuring and Other Charges by Reportable Segments, Pretax

Alcoa Corporation does not include Restructuring and other charges 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,
	2017			2016			2017			2016
Bauxite	$	1		$	–		$	1		$	–
Alumina		4			(1	)		4			1
Aluminum		(22	)		17			(1	)		107
Segment total		(17	)		16			4			108
Corporate		7			1			8			1
Total restructuring and other charges	$	(10	)	$	17		$	12		$	109

Activity and Reserve Balances for Restructuring Charges

Activity and reserve balances for restructuring charges were as follows:

	Layoff costs			Other costs			Total
Reserve balances at December 31, 2015	$	137		$	15		$	152
2016:
Cash payments		(74	)		(35	)		(109	)
Restructuring charges		32			168			200
Other*		(57	)		(120	)		(177	)
Reserve balances at December 31, 2016		38			28			66
2017:
Cash payments		(25	)		(33	)		(58	)
Restructuring charges		17			30			47
Other*		(17	)		(2	)		(19	)
Reserve balances at September 30, 2017	$	13		$	23		$	36

* Other includes reversals of previously recorded restructuring charges and the effects of foreign currency translation. In the 2017 nine-month period and 2016, Other for layoff costs also included a reclassification of $6 (see Note J) and $16, respectively, in pension benefits costs, as these obligations were included in Alcoa Corporation’s separate liability for pension benefits obligations. Additionally in 2016, Other for other costs also included a reclassification of the following restructuring charges: $97 in asset retirement and $26 in environmental obligations, as these liabilities were included in Alcoa Corporation’s separate reserves for asset retirement obligations and environmental remediation.