Equity (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Basic EPS:
Net Income Available to Ingredion - basic									$ 519	$ 485	$ 402
Weighted average number of shares outstanding, basic									72,000,000	72,300,000	71,600,000
Basic earnings per common share of Ingredion (in dollars per share)	$ 1.37	$ 2.31	$ 1.81	$ 1.72	$ 1.29	$ 1.98	$ 1.62	$ 1.81	$ 7.21	$ 6.70	$ 5.62
Effect of Dilutive Securities:
Incremental shares from assumed exercise of dilutive stock options and vesting of dilutive RSUs and other awards									1,500,000	1,800,000	1,400,000
Diluted EPS:
Net Income Available to Ingredion - diluted									$ 519	$ 485	$ 402
Weighted Average Number of Shares Outstanding, Diluted, Total									73,500,000	74,100,000	73,000,000
Earnings Per Share, Diluted	$ 1.35	$ 2.26	$ 1.78	$ 1.68	$ 1.26	$ 1.93	$ 1.58	$ 1.77	$ 7.06	$ 6.55	$ 5.51
Antidilutive securities excluded in calculation of diluted EPS:
Antidilutive securities excluded from computation of earnings per share amount									300,000	0	300,000