Equity - EPS (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Basic EPS:
Net Income Available to Ingredion - basic	$ 142	$ 178	$ 272	$ (68)
Weighted average number of shares outstanding, basic	66.4	67.2	66.6	67.3
Basic earnings per common share of Ingredion (in dollars per share)	$ 2.14	$ 2.65	$ 4.08	$ (1.01)
Effect of Dilutive Securities:
Incremental shares from assumed exercise of dilutive stock options and vesting of dilutive RSUs and other awards	0.7	0.7	0.7
Diluted EPS:
Net Income Available to Ingredion - diluted	$ 142	$ 178	$ 272	$ (68)
Weighted average number of shares outstanding - diluted, Total	67.1	67.9	67.3	67.3
Diluted earnings per common share of Ingredion (in dollars per share)	$ 2.12	$ 2.62	$ 4.04	$ (1.01)
Antidilutive securities excluded in calculation of diluted EPS:
Antidilutive securities excluded from computation of earnings per share amount	1.5	1.4	1.4	2.1