Earnings per Common Share (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Basic EPS:
Net Income Available to Ingredion	$ 83.7	$ 72.6
Weighted average number of shares outstanding, basic	71.6	74.6
Basic earnings per common share of Ingredion (in dollars per share)	$ 1.17	$ 0.97
Incremental shares from assumed exercise of dilutive stock options and vesting of dilutive RSUs, RSAs and other awards	1.1	1.2
Diluted EPS:
Net Income Available to Ingredion	$ 83.7	$ 72.6
Weighted average number of shares outstanding, diluted	72.7	75.8
Diluted earnings per common share of Ingredion (in dollars per share)	$ 1.15	$ 0.96