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Summary of Significant Accounting Policies - Basis of presentation (Details) | Jun. 30, 2018
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Argentina | Minimum |
Currency |
Three-year cumulative inflation rate as a percent | 100.00%

X
- Definition Represents the three-year cumulative inflation rate as a percent. + References No definition available. + Details
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Namespace Prefix: | ingr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | srt_StatementGeographicalAxis=country_AR
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |