Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2011

Cash Flow Information [Abstract]

Schedule Of Cash Paid For Interest And Income Taxes

	2011		2010			2009
Interest, net of amount capitalized	$	491	$	452		$	396
Income taxes, net of amount refunded		382		(67	)		168

Schedule Of Cash Paid For Acquisitions

	2011			2010			2009
Assets acquired	$	253		$	87		$	389
Liabilities assumed		(12	)		(15	)		(294	)
Noncontrolling interests acquired		—			4			—
Redemption of convertible securities of subsidiary		—			40			—
Reduction in Alcoa shareholders' equity		—			22			—
Gain recognized		—			—			(92	)
Cash paid		241			138			3
Less: cash acquired		1			—			115
Net cash paid (received)	$	240		$	138		$	(112	)