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Equity - EPS (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Basic EPS:                      
Net Income Available to Ingredion - basic                 $ 413 $ 443 $ 519
Weighted average number of shares outstanding, basic                 66.9 70.9 72.0
Basic earnings per common share of Ingredion (in dollars per share) $ 1.63 $ 1.48 $ 1.57 $ 1.50 $ 1.38 $ 1.33 $ 1.59 $ 1.94 $ 6.17 $ 6.25 $ 7.21
Effect of Dilutive Securities:                      
Incremental shares from assumed exercise of dilutive stock options and vesting of dilutive RSUs and other awards                 0.5 0.9 1.5
Diluted EPS:                      
Net Income Available to Ingredion - diluted                 $ 413 $ 443 $ 519
Weighted Average Number of Shares Outstanding, Diluted, Total                 67.4 71.8 73.5
Earnings Per Share, Diluted $ 1.61 $ 1.47 $ 1.56 $ 1.48 $ 1.36 $ 1.32 $ 1.57 $ 1.90 $ 6.13 $ 6.17 $ 7.06