Income Taxes (Details) (USD $) In Millions	3 Months Ended
Mar. 31, 2011	Dec. 31, 2010	Mar. 31, 2010
Summary of income tax expense reconciled to statutory rates
Income before discontinued operations, income taxes, equity results and noncontrolling interests	$ 7,871	$ 6,882	$ 1,385
Exchange variation (not taxable) or not deductible	47	114	(416)
Income before income taxes, equity results and noncontrolling interests after exchange variation	7,918	6,996	969
Tax at Brazilian composite rate	(2,692)	(2,379)	(329)
Adjustments to derive effective tax rate:
Tax benefit on interest attributed to stockholders	436	369	209
Difference on tax rates of foreign income	748	699	324
Tax incentives	171	198	17
Other non-taxable, income/non deductible expenses	(40)	(24)	18
Income taxes per consolidated statements of income	(1,377)	(1,137)	239
Brazil [Member]
Summary of income tax expense reconciled to statutory rates
Income before discontinued operations, income taxes, equity results and noncontrolling interests	4,518	5,581	220
Income before income taxes, equity results and noncontrolling interests after exchange variation	4,518	5,581	220
Tax at Brazilian composite rate	(1,536)	(1,898)	(75)
Adjustments to derive effective tax rate:
Tax benefit on interest attributed to stockholders	436	369	209
Tax incentives	171	198	17
Other non-taxable, income/non deductible expenses	13	82	(4)
Income taxes per consolidated statements of income	(916)	(1,249)	(147)
Foreign Country[Member]
Summary of income tax expense reconciled to statutory rates
Income before discontinued operations, income taxes, equity results and noncontrolling interests	3,353	1,301	1,165
Exchange variation (not taxable) or not deductible	47	114	(416)
Income before income taxes, equity results and noncontrolling interests after exchange variation	3,400	1,415	749
Tax at Brazilian composite rate	(1,156)	(481)	(254)
Adjustments to derive effective tax rate:
Difference on tax rates of foreign income	748	699	324
Other non-taxable, income/non deductible expenses	(53)	(106)	22
Income taxes per consolidated statements of income	$ (461)	$ 112	$ (92)

Sum of operating profit and nonoperating income (expense) before income (loss) from equity method investments, income taxes, extraordinary items, cumulative effects of changes in accounting principles, and noncontrolling interest.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Subparagraph 1(i)
-Article 4

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The sum of the current income tax expense (benefit) and the deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Article 4

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 45
-Subparagraph a, b

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The portion of the difference, between total income tax expense (benefit) as reported in the Income Statement for the period and the expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations, that is attributable to total foreign income tax expense (benefit). The foreign income tax expense (benefit) difference represents the income tax expense (benefit) at applicable domestic statutory income tax rates applied to foreign earnings (loss) for the period versus the foreign income tax expense (benefit) calculated by applying the appropriate foreign tax rates.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Subparagraph 1
-Article 4

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The amount of income tax expense (benefit) for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 47

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Subparagraph 2
-Article 4

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The portion of the difference between total income tax expense (benefit) as reported in the Income Statement for the period and the expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to differences in the deductibility of incentive stock options and other share-based compensation costs in accordance with generally accepted accounting principles and enacted tax laws.

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The sum of the differences between total income tax expense (benefit) as reported in the Income Statement for the period and the expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to tax credits.

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Exchange variation (not taxable) or not deductible.

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Income before income taxes, equity results and noncontrolling interests after exchange variation.

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Income Tax Reconciliation Other Non Taxable Income Non Deductible Expenses.

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