Net Income Per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Basic net income per share:
Net income attributable to AGCO Corporation and subsidiaries	$ 50.3	$ 107.1	$ 58.1	$ 137.2
Weighted average number of common shares outstanding, shares	82.0	87.6	82.5	88.2
Basic net income per share attributable to AGCO Corporation and subsidiaries, dollars per share	$ 0.61	$ 1.22	$ 0.70	$ 1.55
Diluted net income per share:
Dilutive SSARs, performance share awards and restricted stock awards, shares	0.1	0.1	0.1	0.1
Weighted average number of common shares and common share equivalents outstanding for purposes of computing diluted income per share, shares	82.1	87.7	82.6	88.3
Diluted net income per share attributable to AGCO Corporation and subsidiaries, dollars per share	$ 0.61	$ 1.22	$ 0.70	$ 1.55
Stock Appreciation Rights (SARs) [Member]
Diluted net income per share:
SSARs excluded from earnings per share computation, shares	1.2	0.9	1.2	1.3