Equity - EPS (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Basic EPS:
Net Income Available to Ingredion - basic	$ 66	$ 105	$ 141	$ 205
Weighted average number of shares outstanding, basic	67.2	66.9	67.2	66.9
Basic earnings per common share of Ingredion (in dollars per share)	$ 0.98	$ 1.57	$ 2.10	$ 3.06
Effect of Dilutive Securities:
Incremental shares from assumed exercise of dilutive stock options and vesting of dilutive RSUs and other awards	0.4	0.5	0.5	0.5
Diluted EPS:
Net Income Available to Ingredion - diluted	$ 66	$ 105	$ 141	$ 205
Weighted Average Number of Shares Outstanding, Diluted, Total	67.6	67.4	67.7	67.4
Diluted earnings per common share of Ingredion (in dollars per share)	$ 0.98	$ 1.56	$ 2.08	$ 3.04
Antidilutive securities excluded in calculation of diluted EPS:
Antidilutive securities excluded from computation of earnings per share amount	1.6	1.0	1.3	1.0