XML 32 R21.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Separation costs | 6 Months Ended
--- | ---
Jun. 30, 2017
Other Income and Expenses [Abstract] |
Separation costs | Separation costs In connection with the Separation as further described in Note 1 and Note 2, we have incurred pre-tax separation costs as shown in the table below. Prior to the Separation, these costs were primarily related to third-party professional fees associated with separation activities and one-time costs of new hires specifically required to separate and stand up Ingevity. Post-Separation, these costs represent legal, information technology and other advisory fees to transition from a division of WestRock to a stand-alone public company.
| Three Months Ended June 30, |  | Six Months Ended June 30,
In millions | 2017 |  | 2016 |  | 2017 |  | 2016
Separation costs | $ | 0.2 |  |  | $ | 4.7 |  |  | $ | 0.5 |  |  | $ | 11.1 |

X
- Definition Business Separation [Text Block] + References No definition available. + Details
Name: | ngvt_BusinessSeparationTextBlock
Namespace Prefix: | ngvt_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_OtherIncomeAndExpensesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration