Joint Venture And Acquisition (Schedule Of Acquired Other Identifiable Intangible Assets) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2011
Tradenames [Member] | Laverda [Member]
Intangible Assets Amount	$ 6.6
Intangible Assets Weighted-Average Useful Life (in years)	30
Tradenames And Trademarks [Member] | AGCO-Amity JV [Member]
Intangible Assets Amount	1.4
Intangible Assets Weighted-Average Useful Life (in years)	5
Technology [Member] | AGCO-Amity JV [Member]
Intangible Assets Amount	17.1
Intangible Assets Weighted-Average Useful Life (in years)	15
Distribution Network [Member] | AGCO-Amity JV [Member]
Intangible Assets Amount	4.4
Intangible Assets Weighted-Average Useful Life (in years)	5
Distribution Network [Member] | Laverda [Member]
Intangible Assets Amount	26.8
Intangible Assets Weighted-Average Useful Life (in years)	16
AGCO-Amity JV [Member]
Intangible Assets Amount	22.9
Laverda [Member]
Intangible Assets Amount	$ 33.4