Segment Information (Tables)

6 Months Ended

Jun. 30, 2013

Segment Reporting [Abstract]

Schedule of Operating Results of Alcoa's Reportable Segments

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

	Alumina		Primary Metals		Global Rolled Products		Engineered Products and Solutions		Total
Second quarter ended June 30, 2013
Sales:
Third-party sales	$	822	$	1,620	$	1,877	$	1,468	$	5,787
Intersegment sales		581		677		43		—		1,301
Total sales	$	1,403	$	2,297	$	1,920	$	1,468	$	7,088
Profit and loss:
Equity loss	$	(1)	$	(7)	$	(2)	$	—	$	(10)
Depreciation, depletion, and amortization		115		132		55		39		341
Income taxes		14		(25)		32		94		115
ATOI		64		(32)		79		193		304
Second quarter ended June 30, 2012
Sales:
Third-party sales	$	750	$	1,804	$	1,913	$	1,420	$	5,887
Intersegment sales		576		782		44		—		1,402
Total sales	$	1,326	$	2,586	$	1,957	$	1,420	$	7,289
Profit and loss:
Equity income (loss)	$	1	$	(9)	$	(2)	$	—	$	(10)
Depreciation, depletion, and amortization		114		133		57		39		343
Income taxes		(6)		(19)		34		76		85
ATOI		23		(3)		78		157		255
	Alumina		Primary Metals		Global Rolled Products		Engineered Products and Solutions		Total
Six months ended June 30, 2013
Sales:
Third-party sales	$	1,648	$	3,378	$	3,656	$	2,891	$	11,573
Intersegment sales		1,176		1,404		94		—		2,674
Total sales	$	2,824	$	4,782	$	3,750	$	2,891	$	14,247
Profit and loss:
Equity loss	$	—	$	(16)	$	(6)	$	—	$	(22)
Depreciation, depletion, and amortization		224		267		112		79		682
Income taxes		28		(24)		71		178		253
ATOI		122		7		160		366		655
Six months ended June 30, 2012
Sales:
Third-party sales	$	1,525	$	3,748	$	3,758	$	2,810	$	11,841
Intersegment sales		1,193		1,543		88		—		2,824
Total sales	$	2,718	$	5,291	$	3,846	$	2,810	$	14,665
Profit and loss:
Equity income (loss)	$	2	$	(11)	$	(3)	$	—	$	(12)
Depreciation, depletion, and amortization		228		268		114		79		689
Income taxes		(7)		(32)		85		149		195
ATOI		58		7		180		314		559

Schedule of Segment ATOI to Consolidated Net Income Attributable to Alcoa

The following table reconciles total segment ATOI to consolidated net (loss) income attributable to Alcoa:

	Second quarter ended June  30,						Six months ended June 30,
	2013			2012			2013			2012
Total segment ATOI	$	304		$	255		$	655		$	559
Unallocated amounts (net of tax):
Impact of LIFO		5			19			3			19
Interest expense		(76	)		(80	)		(151	)		(160	)
Noncontrolling interests		29			17			8			12
Corporate expense		(71	)		(69	)		(138	)		(133	)
Restructuring and other charges		(211	)		(10	)		(216	)		(17	)
Other		(99	)		(134	)		(131	)		(188	)
Consolidated net (loss) income attributable to Alcoa	$	(119	)	$	(2	)	$	30		$	92