Quarterly Financial Data (Unaudited) (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
Quarterly Financial Data (Unaudited)
Net sales before shipping and handling costs	$ 1,527	$ 1,574	$ 1,542	$ 1,537	$ 1,484	$ 1,569	$ 1,533	$ 1,434	$ 6,180	$ 6,022	$ 5,958
Less: shipping and handling costs	90	89	85	84	85	80	78	74	348	318	337
Net sales	1,437	1,485	1,457	1,453	1,399	1,489	1,455	1,360	5,832	5,704	5,621
Gross profit	360	388	373	352	339	369	355	339	1,473	1,402	1,242
Net income attributable to Ingredion	$ 99	$ 166	$ 130	$ 124	$ 94	$ 143	$ 117	$ 130	$ 519	$ 485	$ 402
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
Diluted earnings per common share of Ingredion (in dollars per share)	1.35	2.26	1.78	1.68	1.26	1.93	1.58	1.77	$ 7.06	$ 6.55	$ 5.51
Per share dividends declared	$ 0.60	$ 0.60	$ 0.50	$ 0.50	$ 0.50	$ 0.50	$ 0.45	$ 0.45
Restructuring charges	$ 10	$ 5	$ 5	$ 11	$ 2	$ 2	$ 10		$ 38	$ 19	$ 28
Charge for fair value markup of acquired inventory			$ 3	3					9		10
Pre-tax Acquisition and integration costs	1	1		$ 1	1			$ 1	4	$ 3	$ 10
(Gain) loss on income tax settlement		$ (10)			$ 27
TCJA provisional tax benefit	23								$ 23
Gain on proceeds from insurance	$ 6