Account receivable (Tables)

12 Months Ended

Dec. 31, 2011

Account receivable

Schedule of accounts receivable

	As of December 31,
	2011			2010
Customers
Denominated in Brazilian Reais		1,228			1,227
Denominated in other currencies, mainly US dollars		7,382			7,102
		8,610			8,329
Allowance for doubtful accounts		(105	)		(118	)
Total		8,505			8,211