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Income Taxes (Narrative) (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2014 | Mar. 31, 2013
Income Taxes [Line Items] |  |
Effective income tax rate | 26.80% | 28.00%
Brazilian Federal Revenue Service [Member] |  |
Income Taxes [Line Items] |  |
Number of separate tax assessments | 3 |
Estimated Tax Assessment Including Penalties and Interest | $ 554 |
Estimated Additional Tax Assessment | 37 |
Argentine Tax Authorities [Member] |  |
Income Taxes [Line Items] |  |
Estimated Additional Tax Assessment | 450 |
Estimated Tax Assessment Including Interest | $ 37 |

X
- Definition The element represents the amount of additional income tax expense that could be received in all tax years for which an audit has not yet been initiated and are still open for assessment. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- Definition The sum of estimated tax associated with tax deductibility callenge in a foreign jusrisdiction relating to prior years. + References No definition available. + Details
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Namespace Prefix: | adm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- Definition The sum of estimated tax, penalties and interest associated with tax deductibility challenge in a foreign jurisdiction relating to prior years. + References No definition available. + Details
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Namespace Prefix: | adm_
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- Details
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- Definition Represents the number of separate tax assessments received. + References No definition available. + Details
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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Subparagraph 2 -Article 4 + Details
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