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Basis of Presentation (Narrative) (Details) (USD $) In Millions, unless otherwise specified | 6 Months Ended
--- | ---
Jun. 30, 2013
Noncontrolling interests associated with mandatorily redeemable instruments | $ 180
Noncontrolling Interests [Member] |
Noncontrolling interests associated with mandatorily redeemable instruments | $ 180

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- Definition Noncontrolling interests associated with manditorily redeemable instruments. + References No definition available. + Details
Name: | adm_NoncontrollingInterestsAssociatedWithMandatorilyRedeemableInstruments
Namespace Prefix: | adm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration