Earnings per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Basic EPS:
Net Income Available to Ingredion - basic	$ 124.0	$ 130.0
Weighted average number of shares outstanding, basic	72.2	72.0
Basic earnings per common share of Ingredion (in dollars per share)	$ 1.72	$ 1.81
Effect of Dilutive Securities:
Incremental shares from assumed exercise of dilutive stock options and vesting of dilutive RSUs and other awards	1.5	1.6
Diluted EPS:
Net Income Available to Ingredion - diluted	$ 124.0	$ 130.0
Weighted Average Number of Shares Outstanding, Diluted, Total	73.7	73.6
Diluted earnings per common share of Ingredion (in dollars per share)	$ 1.68	$ 1.77
Antidilutive securities excluded in calculation of diluted EPS:
Antidilutive securities excluded from computation of earnings per share amount	0.3	0.3