Debt And Financing Arrangements (Narrative) (Details) (USD $) In Billions, unless otherwise specified	Mar. 31, 2014
Debt And Financing Arrangements [Line Items]
Excess of fair value over carrying value of long-term debt	$ 1.1
Maximum amount of facility provided under accounts receivable securitization program	1.5
Convertible senior notes point eight seven five percent due two thousand fourteen [Member]
Debt And Financing Arrangements [Line Items]
Debt instrument face amount	1.15
Line of Credit [Member]
Debt And Financing Arrangements [Line Items]
Lines of credit	6.9
Unused lines of credit	6.6
Commercial Paper [Member]
Debt And Financing Arrangements [Line Items]
Lines of credit	$ 4.0

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Namespace Prefix:	adm_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The amount by which the fair value of the entity's long-term debt exceeds the carrying value.

+ References

No definition available.

+ Details

Name:	adm_FairValueLongTermDebtExcessOverCarryingValue
Namespace Prefix:	adm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

This element represents the maximum amount of facility provided under the accounts receivable securitization program.

+ References

No definition available.

+ Details

Name:	adm_Maximumamountoffacilityprovidedunderaccountsreceivablesecuritizationprogram
Namespace Prefix:	adm_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant