Earnings per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Basic EPS:
Net Income Available to Ingredion - basic	$ 166	$ 143	$ 420	$ 391
Weighted average number of shares outstanding, basic	71.9	72.5	72.0	72.2
Basic earnings per common share of Ingredion (in dollars per share)	$ 2.31	$ 1.98	$ 5.83	$ 5.42
Effect of Dilutive Securities:
Incremental shares from assumed exercise of dilutive stock options and vesting of dilutive RSUs and other awards	1.4	1.8	1.4	1.8
Diluted EPS:
Net Income Available to Ingredion - diluted	$ 166	$ 143	$ 420	$ 391
Weighted Average Number of Shares Outstanding, Diluted, Total	73.3	74.3	73.4	74.0
Diluted earnings per common share of Ingredion (in dollars per share)	$ 2.26	$ 1.93	$ 5.72	$ 5.29
Antidilutive securities excluded in calculation of diluted EPS:
Antidilutive securities excluded from computation of earnings per share amount	0.3		0.3