Condensed Consolidated Statements of Operations (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Income Statement [Abstract]
Net sales	$ 2,295.0	$ 2,099.1	$ 7,258.8	$ 6,255.4
Cost of goods sold	1,804.0	1,691.3	5,663.4	5,003.4
Gross profit	491.0	407.8	1,595.4	1,252.0
Selling, general and administrative expenses	262.8	221.2	756.7	622.4
Engineering expenses	76.4	67.5	227.5	191.6
Restructuring and other infrequent income	0	0	0	(0.7)
Amortization of intangibles	12.2	4.8	36.9	14.1
Income from operations	139.6	114.3	574.3	424.6
Interest expense, net	15.8	3.1	43.5	21.1
Other expense, net	13.8	7.1	24.3	17.3
Income before income taxes and equity in net earnings of affiliates	110.0	104.1	506.5	386.2
Income tax provision	30.5	31.6	131.0	123.4
Income before equity in net earnings of affiliates	79.5	72.5	375.5	262.8
Equity in net earnings of affiliates	12.6	12.0	39.9	37.2
Net income	92.1	84.5	415.4	300.0
Net loss (income) attributable to noncontrolling interests	2.4	(0.1)	4.2	(1.9)
Net income attributable to AGCO Corporation and subsidiaries	$ 94.5	$ 84.4	$ 419.6	$ 298.1
Net income per common share attributable to AGCO Corporation and subsidiaries:
Basic, in dollars per share	$ 0.97	$ 0.88	$ 4.32	$ 3.13
Diluted, in dollars per share	$ 0.96	$ 0.87	$ 4.25	$ 3.04
Weighted average number of common and common equivalent shares outstanding:
Basic, shares	97.0	96.4	97.1	95.1
Diluted, shares	98.4	96.9	98.6	97.9