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Derivative Instruments and Hedging Activities (Narrative) (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 6 Months Ended |  |  | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2014 | Jun. 30, 2014 bu | Jun. 30, 2014 Designated As Hedging Instrument [Member] | Dec. 31, 2013 Designated As Hedging Instrument [Member] | Jun. 30, 2014 Corn [Member] Designated As Hedging Instrument [Member] | Jun. 30, 2014 Corn [Member] Designated As Hedging Instrument [Member] | Jun. 30, 2014 Ethanol [Member] Designated As Hedging Instrument [Member] gal | Jun. 30, 2014 Ethanol [Member] Designated As Hedging Instrument [Member] gal
Derivative [Line Items] |  |  |  |  |  |  |  |
Interest Rate Derivative Assets, at Fair Value | $ 17 | $ 17 | $ 17 | $ 0 |  |  |  |
After-tax losses in AOCI from commodity cash flow hedge transactions |  |  | $ 32 |  |  |  |  |
Number of months price risk cash flow hedges gain loss will be recognized in earnings | 12 months |  |  |  |  |  |  |
Corn processed per month (in bushels) |  | 76,000,000 |  |  |  |  |  |
Historical time period of hedge percentages |  |  |  |  |  | 12 months |  |
Percentage of anticipated commodity purchases or production hedged during historical hedging period, low end of range (as a percent) |  |  |  |  |  | 16.00% |  |
Percentage of anticipated commodity purchases or production hedged during historical hedging period, high end of range (as a percent) |  |  |  |  |  | 71.00% |  |
Percentage of anticipated commodity purchases or production hedged over future hedging period, low end of range (as a percent) |  |  |  |  | 1.00% | 1.00% |  |
Percentage of anticipated commodity purchases or production hedged over future hedging period, high end of range (as a percent) |  |  |  |  | 60.00% | 60.00% |  |
Derivative Hedged Item Past Period of Time Hedged Volumes |  |  |  |  |  |  |  | 12 months
Commodity sales volume hedged during historical hedging period, low end of range (in gallons) |  |  |  |  |  |  |  | 10,000,000
Commodity sales volume hedged during historical hedging period, high end of range (in gallons) |  |  |  |  |  |  |  | 121,000,000
Derivative Hedged Item Time Period |  |  |  |  | 12 months |  | 12 months |
Contracted commodity sales volume hedged over future hedging period, low end of range (in gallons) |  |  |  |  |  |  | 7,000,000 | 7,000,000
Contracted commodity sales volume hedged over future hedging period, high end of range (in gallons) |  |  |  |  |  |  | 95,000,000 | 95,000,000

X
- Definition High end of the range of the entity's contracted commodity sales volumes hedged during the historical hedging period. + References No definition available. + Details
Name: | adm_CommodityHedgedDuringHistoricalHedgingPeriodHighEnd
Namespace Prefix: | adm_
Data Type: | num:volumeItemType
Balance Type: | na
Period Type: | duration

X
- Definition Low end of the range of the entity's contracted commodity sales volumes hedged during the historical hedging period. + References No definition available. + Details
Name: | adm_CommodityHedgedDuringHistoricalHedgingPeriodLowEnd
Namespace Prefix: | adm_
Data Type: | num:volumeItemType
Balance Type: | na
Period Type: | duration

X
- Definition High end of the range of the contracted sales volume hedged by the company over the future hedging period. + References No definition available. + Details
Name: | adm_ContractedCommodityHedgedOverFutureHedgingPeriodHighEnd
Namespace Prefix: | adm_
Data Type: | num:volumeItemType
Balance Type: | na
Period Type: | instant

X
- Definition Low end of the range of the contracted sales volume hedged by the company over the future hedging period. + References No definition available. + Details
Name: | adm_ContractedCommodityHedgedOverFutureHedgingPeriodLowEnd
Namespace Prefix: | adm_
Data Type: | num:volumeItemType
Balance Type: | na
Period Type: | instant

X
- Definition The period of time for which the entity discloses its historical hedging percentages. + References No definition available. + Details
Name: | adm_DerivativeHedgedItemPastPeriodOfTimeHedged
Namespace Prefix: | adm_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The period of time for which the entity discloses its historical hedging gallons. + References No definition available. + Details
Name: | adm_DerivativeHedgedItemPastPeriodOfTimeHedgedVolumes
Namespace Prefix: | adm_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The forward time period for which hedges have been made as of the balance sheet date. + References No definition available. + Details
Name: | adm_DerivativeHedgedItemTimePeriod
Namespace Prefix: | adm_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of months price risk cash flow hedges gain loss will be recognized in earnings + References No definition available. + Details
Name: | adm_Numberofmonthspriceriskcashflowhedgesgainlosswillberecognizedinearnings
Namespace Prefix: | adm_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition High end of the range of the percentage of the entity's anticipated commodity purchases or production hedged during the historical hedging period. + References No definition available. + Details
Name: | adm_PercentageOfAnticipatedCommodityHedgedDuringHistoricalHedgingPeriodHighEnd
Namespace Prefix: | adm_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Low end of the range of the percentage of entity's anticipated commodity purchases or production hedged during the historical hedging period + References No definition available. + Details
Name: | adm_PercentageofAnticipatedCommodityHedgedDuringHistoricalHedgingPeriodLowEnd
Namespace Prefix: | adm_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition High end of the range of the percentage of the entity's anticipated commodity purchases or production hedged over the forward hedging period. + References No definition available. + Details
Name: | adm_PercentageofAnticipatedCommodityHedgedoverFutureHedgingPeriodHighEnd
Namespace Prefix: | adm_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Low end of the range of the percentage of the entity's anticipated commodity purchases or production hedged over the forward hedging period. + References No definition available. + Details
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Namespace Prefix: | adm_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition This element represents the quantity of corn processing per month under the designated cash flow hedge program. + References No definition available. + Details
Name: | adm_ProcessingOfCornPerMonth
Namespace Prefix: | adm_
Data Type: | num:volumeItemType
Balance Type: | na
Period Type: | duration

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- Details
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- Definition Fair value as of the balance sheet date of interest rate derivative assets, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13433-108611 + Details
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Balance Type: | debit
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- Definition The estimated net amount of unrealized gains or losses on price risk cash flow hedges as of the balance sheet date expected to be reclassified to earnings within the next twelve months. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=7668309&loc=d3e80748-113994 + Details
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