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Basis of Presentation (Narrative) (Details) (USD $) In Millions, unless otherwise specified | 6 Months Ended
--- | ---
Dec. 31, 2011
Noncontrolling interests previously associated with mandatorily redeemable instruments | $ 182
Noncontrolling Interests [Member] |
Noncontrolling interests previously associated with mandatorily redeemable instruments | $ 172

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