XML 33 R26.htm IDEA: XBRL DOCUMENT
v3.25.2

Segment Reporting (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2025
Segment Reporting [Abstract] |
Segment Reporting | The following table analyzes sales and other financial information by the Company’s reportable segments:
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
(in millions) |  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Net Sales: |  |  |  |  |  |  |  |  |  |  |  |
Personal Care |  | $ | 105.0 |  |  | $ | 97.7 |  |  | $ | 205.5 |  |  | $ | 192.5 |
Home Care |  |  | 26.1 |  |  |  | 24.3 |  |  |  | 52.4 |  |  |  | 50.7 |
Other |  |  | 42.7 |  |  |  | 38.1 |  |  |  | 84.3 |  |  |  | 77.7 |
Performance Chemicals |  |  | 173.8 |  |  |  | 160.1 |  |  |  | 342.2 |  |  |  | 320.9 |
Refinery and Performance |  |  | 112.8 |  |  |  | 109.1 |  |  |  | 242.2 |  |  |  | 254.2 |
Other |  |  | 52.3 |  |  |  | 57.5 |  |  |  | 93.2 |  |  |  | 89.3 |
Fuel Specialties |  |  | 165.1 |  |  |  | 166.6 |  |  |  | 335.4 |  |  |  | 343.5 |
Oilfield Services |  |  | 100.8 |  |  |  | 108.3 |  |  |  | 202.9 |  |  |  | 270.8 |
|  | $ | 439.7 |  |  | $ | 435.0 |  |  | $ | 880.5 |  |  | $ | 935.2 |
Gross profit: |  |  |  |  |  |  |  |  |  |  |  |
Performance Chemicals |  | $ | 30.5 |  |  | $ | 36.2 |  |  | $ | 65.8 |  |  | $ | 73.9 |
Fuel Specialties |  |  | 62.9 |  |  |  | 57.6 |  |  |  | 123.7 |  |  |  | 118.2 |
Oilfield Services |  |  | 29.8 |  |  |  | 33.1 |  |  |  | 58.8 |  |  |  | 90.5 |
Total gross profit |  | $ | 123.2 |  |  | $ | 126.9 |  |  | $ | 248.3 |  |  | $ | 282.6 |
Operating income/(loss): |  |  |  |  |  |  |  |  |  |  |  |
Performance Chemicals |  | $ | 14.3 |  |  | $ | 21.2 |  |  | $ | 34.1 |  |  | $ | 42.3 |
Fuel Specialties |  |  | 35.4 |  |  |  | 30.4 |  |  |  | 72.3 |  |  |  | 63.8 |
Oilfield Services |  |  | 6.2 |  |  |  | 7.3 |  |  |  | 10.3 |  |  |  | 24.2 |
Corporate costs |  |  | (20.9 | ) |  |  | (17.6 | ) |  |  | (38.6 | ) |  |  | (37.8 | )
Adjustment to fair value of contingent consideration |  |  | (0.8 | ) |  |  | (0.6 | ) |  |  | (1.5 | ) |  |  | (1.4 | )
Profit on disposal of property, plant and equipment |  |  | 0.1 |  |  |  | — |  |  |  | 0.2 |  |  |  | 0.1 |
Total operating income |  | $ | 34.3 |  |  | $ | 40.7 |  |  | $ | 76.8 |  |  | $ | 91.2 |
Summary of Segment Reporting related to Cost of Goods Sold | The following table analyzes cost of goods sold by the Company’s reportable segments:
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
(in millions) |  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Performance Chemicals |  | $ | 143.3 |  |  | $ | 123.9 |  |  | $ | 276.4 |  |  | $ | 247.0 |
Fuel Specialties |  |  | 102.2 |  |  |  | 109.0 |  |  |  | 211.7 |  |  |  | 225.3 |
Oilfield Services |  |  | 71.0 |  |  |  | 75.2 |  |  |  | 144.1 |  |  |  | 180.3 |
Total cost of goods sold |  | $ | 316.5 |  |  | $ | 308.1 |  |  | $ | 632.2 |  |  | $ | 652.6 |
Summary of Segment Reporting related to Selling, General and Administrative Expense and Research and Development Expense | The following table analyzes selling, general and administrative expenses and research and development expenses by the Company’s reportable segments:
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
(in millions) |  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Performance Chemicals |  | $ | 16.2 |  |  | $ | 15.0 |  |  | $ | 31.7 |  |  | $ | 31.6 |
Fuel Specialties |  |  | 27.5 |  |  |  | 27.2 |  |  |  | 51.4 |  |  |  | 54.4 |
Oilfield Services |  |  | 23.6 |  |  |  | 25.8 |  |  |  | 48.5 |  |  |  | 66.3 |
Corporate |  |  | 20.9 |  |  |  | 17.6 |  |  |  | 38.6 |  |  |  | 37.8 |
Total selling, general and administrative expenses and research and development expenses |  | $ | 88.2 |  |  | $ | 85.6 |  |  | $ | 170.2 |  |  | $ | 190.1 |

X
- Definition Schedule of segment reporting information related to selling, general and administrative expense and research and development expense, by segment. + References No definition available. + Details
Name: | iosp_ScheduleOfSegmentReportingInformationRelatedToSellingGeneralAndAdministrativeExpenseAndResearchAndDevelopmentExpenseBySegmentTableTextBlock
Namespace Prefix: | iosp_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Schedule of segment reporting information relates to cost of goods sold, by segment. + References No definition available. + Details
Name: | iosp_ScheduleOfSegmentReportingInformationRelatesToCostOfGoodsSoldBySegmentTableTextBlock
Namespace Prefix: | iosp_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-25 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-22 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-30 + Details
Name: | us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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