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Acquisitions (Schedule Of Acquired Other Identifiable Intangible Assets) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended		0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Aug. 01, 2014
Intangible assets acquired	$ 46.3us-gaap_FinitelivedIntangibleAssetsAcquired1	$ 6.0us-gaap_FinitelivedIntangibleAssetsAcquired1
Customer Relationships
Intangible assets acquired	28.0us-gaap_FinitelivedIntangibleAssetsAcquired1 / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember	0us-gaap_FinitelivedIntangibleAssetsAcquired1 / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember
Intangible assets acquired, weighted average useful life, in years	14 years
Intersystems Holdings, Inc. [Member]
Intangible assets acquired			46.3us-gaap_FinitelivedIntangibleAssetsAcquired1 / us-gaap_BusinessAcquisitionAxis = agco_IntersystemsHoldingsInc.Member
Intersystems Holdings, Inc. [Member] | Customer Relationships
Intangible assets acquired			28.0us-gaap_FinitelivedIntangibleAssetsAcquired1 / us-gaap_BusinessAcquisitionAxis = agco_IntersystemsHoldingsInc.Member / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember
Intangible assets acquired, weighted average useful life, in years			15 years
Intersystems Holdings, Inc. [Member] | Technology-Based Intangible Assets [Member]
Intangible assets acquired			11.3us-gaap_FinitelivedIntangibleAssetsAcquired1 / us-gaap_BusinessAcquisitionAxis = agco_IntersystemsHoldingsInc.Member / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TechnologyBasedIntangibleAssetsMember
Intangible assets acquired, weighted average useful life, in years			15 years
Intersystems Holdings, Inc. [Member] | Trademarks [Member]
Intangible assets acquired			$ 7.0us-gaap_FinitelivedIntangibleAssetsAcquired1 / us-gaap_BusinessAcquisitionAxis = agco_IntersystemsHoldingsInc.Member / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TrademarksMember
Intangible assets acquired, weighted average useful life, in years			16 years

X

- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275

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X

- Definition

Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, resulting from a business combination.

+ References

No definition available.

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