Earnings per Common Share (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Basic EPS:
Net Income Available to Ingredion	$ 118.6	$ 86.3	$ 293.8	$ 292.2
Weighted average number of shares outstanding, basic	73.0	77.3	74.2	77.5
Basic earnings per common share of Ingredion (in dollars per share)	$ 1.62	$ 1.12	$ 3.96	$ 3.77
Incremental shares from assumed exercise of dilutive stock options and vesting of dilutive RSUs, RSAs and other awards	1.3	1.3	1.3	1.3
Diluted EPS:
Net Income Available to Ingredion	$ 118.6	$ 86.3	$ 293.8	$ 292.2
Weighted average number of shares outstanding, diluted	74.3	78.6	75.5	78.8
Diluted earnings per common share of Ingredion (in dollars per share)	$ 1.60	$ 1.10	$ 3.89	$ 3.71
Antidilutive securities excluded in calculation of diluted EPS:
Antidilutive securities excluded from computation of earnings per share amount		0.4	0.4	0.4