Earnings 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 EPS:
Net Income Available to Ingredion - basic	$ 117.2	$ 106.7	$ 247.7	$ 190.3
Weighted average number of shares outstanding, basic	72.2	71.6	72.1	71.6
Basic earnings per common share of Ingredion (in dollars per share)	$ 1.62	$ 1.49	$ 3.44	$ 2.66
Incremental shares from assumed exercise of dilutive stock options and vesting of dilutive RSUs and other awards	1.8	1.1	1.7	1.2
Diluted EPS:
Net Income Available to Ingredion - diluted	$ 117.2	$ 106.7	$ 247.7	$ 190.3
Weighted average number of shares outstanding, diluted	74.0	72.7	73.8	72.8
Diluted earnings per common share of Ingredion (in dollars per share)	$ 1.58	$ 1.47	$ 3.36	$ 2.62
Antidilutive securities excluded in calculation of diluted EPS:
Antidilutive securities excluded from computation of earnings per share amount	0.1	0.3	0.3	0.3