XML 48 R33.htm IDEA: XBRL DOCUMENT
v3.20.4

Accounting Policies (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2020
Accounting Policies [Abstract] |
Estimated Useful Lives of Major Classes of Depreciable Assets | The estimated useful lives of the major classes of depreciable assets are as follows:
Buildings |  |  | 7 to 25 years |
Equipment |  |  | 3 to 10 years |
Estimated Useful Lives of Major Classes of Assets | The estimated useful lives of the major classes of assets are as follows:
Technology |  |  | 10 to 17 years |
Customer lists |  |  | 10 to 15 years |
Brand names |  |  | 5 to 10 years |
Product rights |  |  | 9 to 10 years |
Internally developed software |  |  | 3 to 5 years |
Marketing related |  |  | 11 years |

X
- Definition Estimated Useful Life Of Finite Lived Intangible Assets Table [Text Block] + References No definition available. + Details
Name: | iosp_EstimatedUsefulLifeOfFiniteLivedIntangibleAssetsTableTextBlock
Namespace Prefix: | iosp_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Estimated Useful Life Of Property And Equipment Table [Text Block] + References No definition available. + Details
Name: | iosp_EstimatedUsefulLifeOfPropertyAndEquipmentTableTextBlock
Namespace Prefix: | iosp_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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