Segment Information (Tables)

3 Months Ended

Mar. 31, 2020

Segment Reporting [Abstract]

Schedule of Operating Results of Alcoa's Reportable Segments

The operating results of Alcoa Corporation’s reportable segments were as follows (differences between segment totals and consolidated amounts are in Corporate):

	Bauxite		Alumina			Aluminum			Total
First quarter ended March 31, 2020
Sales:
Third-party sales	$	71	$	707		$	1,598		$	2,376
Intersegment sales		235		336			3			574
Total sales	$	306	$	1,043		$	1,601		$	2,950
Segment Adjusted EBITDA	$	120	$	193		$	62		$	375
Supplemental information:
Depreciation, depletion, and amortization	$	34	$	49		$	81		$	164
Equity (loss) income	$	—	$	(9	)	$	5		$	(4	)
First quarter ended March 31, 2019
Sales:
Third-party sales	$	65	$	897		$	1,735		$	2,697
Intersegment sales		236		417			3			656
Total sales	$	301	$	1,314		$	1,738		$	3,353
Segment Adjusted EBITDA	$	126	$	372		$	(96	)	$	402
Supplemental information:
Depreciation, depletion, and amortization	$	28	$	48		$	89		$	165
Equity income (loss)	$	—	$	12		$	(22	)	$	(10	)

Schedule of Segment Adjusted EBITDA to Consolidated Net Income (Loss) Attributable to Alco Corporation

The following table reconciles total Segment Adjusted EBITDA to consolidated net income (loss) attributable to Alcoa Corporation:

	First quarter ended March 31,
	2020			2019
Total Segment Adjusted EBITDA	$	375		$	402
Unallocated amounts:
Transformation(1)		(16	)		2
Intersegment eliminations		(8	)		86
Corporate expenses(2)		(27	)		(24	)
Provision for depreciation, depletion, and    amortization		(170	)		(172	)
Restructuring and other charges, net (D)		(2	)		(113	)
Interest expense		(30	)		(30	)
Other income (expenses), net (O)		132			(41	)
Other(3)		(35	)		(18	)
Consolidated income before income taxes		219			92
Provision for income taxes		(80	)		(150	)
Net income attributable to noncontrolling    interest		(59	)		(141	)
Consolidated net income (loss) attributable to    Alcoa Corporation	$	80		$	(199	)

⁽¹⁾  Transformation includes, among other items, the Adjusted EBITDA of previously closed operations.

⁽²⁾  Corporate expenses are composed of general administrative and other expenses of operating the corporate headquarters and other global administrative facilities, as well as research and development expenses of the corporate technical center.

⁽³⁾  Other includes certain items that impact Cost of goods sold and Selling, general administrative, and other expenses on Alcoa Corporation’s Statement of Consolidated Operations that are not included in the Adjusted EBITDA of the reportable segments.

Schedule of Sales by Product Division

The following table details Alcoa Corporation’s Sales by product division:

	First quarter ended March 31,
	2020			2019
Primary aluminum	$	1,297		$	1,394
Alumina		707			897
Flat-rolled aluminum		272			312
Bauxite		59			58
Energy		52			69
Other		(6	)		(11	)
	$	2,381		$	2,719