Half-year report · HY
5019.TEDINET S100X1GM
Period2025-04-01 → 2025-09-30
Filed2025-11-12
StandardJapan GAAP
ConsolidatedYes
Data checks14 of 14 passed
Key figures · 44
| Metric | Value | Period | Scope | Source row |
|---|---|---|---|---|
| Revenue | ¥3.81T | 2025-04-01 → 2025-09-30 | Cons. | Net sales |
| Revenue | ¥9.19T | 2024-04-01 → 2025-03-31 | Cons. | Net sales (5-year summary) |
| Revenue | ¥4.50T | 2024-04-01 → 2024-09-30 | Cons. | Net sales |
| Operating income | ¥25.8bn | 2025-04-01 → 2025-09-30 | Cons. | Operating income |
| Operating income | ¥97.3bn | 2024-04-01 → 2024-09-30 | Cons. | Operating income |
| Ordinary income | ¥35.3bn | 2025-04-01 → 2025-09-30 | Cons. | Ordinary income |
| Ordinary income | ¥214.8bn | 2024-04-01 → 2025-03-31 | Cons. | Ordinary income loss (5-year summary) |
| Ordinary income | ¥124.9bn | 2024-04-01 → 2024-09-30 | Cons. | Ordinary income |
| Profit before tax | ¥41.3bn | 2025-04-01 → 2025-09-30 | Cons. | Income before income taxes |
| Profit before tax | ¥130.8bn | 2024-04-01 → 2024-09-30 | Cons. | Income before income taxes |
| Net income (owners) | ¥36.1bn | 2025-04-01 → 2025-09-30 | Cons. | Profit loss attributable to owners of parent |
| Net income (owners) | ¥104.1bn | 2024-04-01 → 2025-03-31 | Cons. | Profit loss attributable to owners of parent (5-year summary) |
| Net income (owners) | ¥99.4bn | 2024-04-01 → 2024-09-30 | Cons. | Profit loss attributable to owners of parent |
| Net income | ¥35.2bn | 2025-04-01 → 2025-09-30 | Cons. | Profit loss |
| Net income | ¥98.7bn | 2024-04-01 → 2024-09-30 | Cons. | Profit loss |
| Total assets | ¥4.53T | at 2025-09-30 | Cons. | Assets |
| Total assets | ¥4.78T | at 2025-03-31 | Cons. | Assets |
| Total assets | ¥4.69T | at 2024-09-30 | Cons. | Total assets (5-year summary) |
| Total liabilities | ¥2.78T | at 2025-09-30 | Cons. | Liabilities |
| Total liabilities | ¥3.04T | at 2025-03-31 | Cons. | Liabilities |
| Net assets / equity | ¥1.75T | at 2025-09-30 | Cons. | Net assets |
| Net assets / equity | ¥1.74T | at 2025-03-31 | Cons. | Net assets |
| Net assets / equity | ¥1.88T | at 2024-09-30 | Cons. | Net assets (5-year summary) |
| Cash and deposits | ¥122.2bn | at 2025-09-30 | Cons. | Cash and deposits |
| Cash and deposits | ¥165.8bn | at 2025-03-31 | Cons. | Cash and deposits |
| Cash & equivalents | ¥120.6bn | at 2025-09-30 | Cons. | Cash and cash equivalents |
| Cash & equivalents | ¥164.3bn | at 2025-03-31 | Cons. | Cash and cash equivalents |
| Cash & equivalents | ¥29.9bn | at 2024-09-30 | Cons. | Cash and cash equivalents |
| Cash & equivalents | ¥136.9bn | at 2024-03-31v | Cons. | Cash and cash equivalents |
| Operating cash flow | ¥75.6bn | 2025-04-01 → 2025-09-30 | Cons. | Net cash provided by used in operating activities |
| Operating cash flow | ¥476.7bn | 2024-04-01 → 2025-03-31 | Cons. | Net cash provided by used in operating activities (5-year summary) |
| Operating cash flow | ¥221.8bn | 2024-04-01 → 2024-09-30 | Cons. | Net cash provided by used in operating activities |
| Investing cash flow | −¥99.7bn | 2025-04-01 → 2025-09-30 | Cons. | Net cash provided by used in investment activities |
| Investing cash flow | −¥118.5bn | 2024-04-01 → 2025-03-31 | Cons. | Net cash provided by used in investing activities (5-year summary) |
| Investing cash flow | −¥47.0bn | 2024-04-01 → 2024-09-30 | Cons. | Net cash provided by used in investment activities |
| Financing cash flow | −¥8.2bn | 2025-04-01 → 2025-09-30 | Cons. | Net cash provided by used in financing activities |
| Financing cash flow | −¥343.4bn | 2024-04-01 → 2025-03-31 | Cons. | Net cash provided by used in financing activities (5-year summary) |
| Financing cash flow | −¥288.0bn | 2024-04-01 → 2024-09-30 | Cons. | Net cash provided by used in financing activities |
| EPS (basic) | ¥29.46 | 2025-04-01 → 2025-09-30 | Cons. | Basic earnings loss per share (5-year summary) |
| EPS (basic) | ¥77.83 | 2024-04-01 → 2025-03-31 | Cons. | Basic earnings loss per share (5-year summary) |
| EPS (basic) | ¥72.99 | 2024-04-01 → 2024-09-30 | Cons. | Basic earnings loss per share (5-year summary) |
| Equity ratio | 38.1% | at 2025-09-30 | Cons. | Equity to asset ratio (5-year summary) |
| Equity ratio | 36.0% | at 2025-03-31 | Cons. | Equity to asset ratio (5-year summary) |
| Equity ratio | 39.8% | at 2024-09-30 | Cons. | Equity to asset ratio (5-year summary) |
Periods use the dates stated in the filing. d = earlier-year period dated by calendar; v = that date confirmed by the company's own earlier filing.
Segments · 69
| Segment | Item | Period | Value |
|---|---|---|---|
| Operating Segments Not Included In Reportable Segments And Other Revenue Generating Business Activitiesother segments | revenue | 2025-04-01 → 2025-09-30 | ¥11.1bn |
| Operating Segments Not Included In Reportable Segments And Other Revenue Generating Business Activitiesother segments | revenue external | 2025-04-01 → 2025-09-30 | ¥7.6bn |
| Operating Segments Not Included In Reportable Segments And Other Revenue Generating Business Activitiesother segments | revenue intersegment | 2025-04-01 → 2025-09-30 | ¥3.5bn |
| Operating Segments Not Included In Reportable Segments And Other Revenue Generating Business Activitiesother segments | segment profit | 2025-04-01 → 2025-09-30 | ¥524m |
| Reconciling Itemsreconciling | revenue | 2025-04-01 → 2025-09-30 | −¥29.2bn |
| Reconciling Itemsreconciling | revenue intersegment | 2025-04-01 → 2025-09-30 | −¥29.2bn |
| Reconciling Itemsreconciling | segment profit | 2025-04-01 → 2025-09-30 | −¥8.8bn |
| Basic Chemicalsreportable segment | revenue | 2025-04-01 → 2025-09-30 | ¥239.6bn |
| Basic Chemicalsreportable segment | revenue external | 2025-04-01 → 2025-09-30 | ¥235.2bn |
| Basic Chemicalsreportable segment | revenue intersegment | 2025-04-01 → 2025-09-30 | ¥4.4bn |
| Basic Chemicalsreportable segment | segment profit | 2025-04-01 → 2025-09-30 | −¥9.0bn |
| Functional Materialsreportable segment | revenue | 2025-04-01 → 2025-09-30 | ¥259.5bn |
| Functional Materialsreportable segment | revenue external | 2025-04-01 → 2025-09-30 | ¥247.9bn |
| Functional Materialsreportable segment | revenue intersegment | 2025-04-01 → 2025-09-30 | ¥11.5bn |
| Functional Materialsreportable segment | segment profit | 2025-04-01 → 2025-09-30 | ¥19.3bn |
| Petroleumreportable segment | revenue | 2025-04-01 → 2025-09-30 | ¥3.18T |
| Petroleumreportable segment | revenue external | 2025-04-01 → 2025-09-30 | ¥3.17T |
| Petroleumreportable segment | revenue intersegment | 2025-04-01 → 2025-09-30 | ¥7.8bn |
| Petroleumreportable segment | segment profit | 2025-04-01 → 2025-09-30 | ¥10.5bn |
| Power And Renewable Energyreportable segment | revenue | 2025-04-01 → 2025-09-30 | ¥53.5bn |
| Power And Renewable Energyreportable segment | revenue external | 2025-04-01 → 2025-09-30 | ¥51.6bn |
| Power And Renewable Energyreportable segment | revenue intersegment | 2025-04-01 → 2025-09-30 | ¥1.9bn |
| Power And Renewable Energyreportable segment | segment profit | 2025-04-01 → 2025-09-30 | −¥431m |
| Resourcesreportable segment | revenue | 2025-04-01 → 2025-09-30 | ¥95.6bn |
| Resourcesreportable segment | revenue external | 2025-04-01 → 2025-09-30 | ¥95.6bn |
| Resourcesreportable segment | segment profit | 2025-04-01 → 2025-09-30 | ¥13.7bn |
| —segment total | revenue | 2025-04-01 → 2025-09-30 | ¥3.82T |
| —segment total | revenue external | 2025-04-01 → 2025-09-30 | ¥3.80T |
| —segment total | revenue intersegment | 2025-04-01 → 2025-09-30 | ¥25.7bn |
| —segment total | segment profit | 2025-04-01 → 2025-09-30 | ¥34.1bn |
| Total Of Reportable Segments And Otherssegment total | revenue | 2025-04-01 → 2025-09-30 | ¥3.83T |
| Total Of Reportable Segments And Otherssegment total | revenue external | 2025-04-01 → 2025-09-30 | ¥3.81T |
| Total Of Reportable Segments And Otherssegment total | revenue intersegment | 2025-04-01 → 2025-09-30 | ¥29.2bn |
| Total Of Reportable Segments And Otherssegment total | segment profit | 2025-04-01 → 2025-09-30 | ¥34.6bn |
| Operating Segments Not Included In Reportable Segments And Other Revenue Generating Business Activitiesother segments | revenue | 2024-04-01 → 2024-09-30 | ¥10.3bn |
| Operating Segments Not Included In Reportable Segments And Other Revenue Generating Business Activitiesother segments | revenue external | 2024-04-01 → 2024-09-30 | ¥6.3bn |
| Operating Segments Not Included In Reportable Segments And Other Revenue Generating Business Activitiesother segments | revenue intersegment | 2024-04-01 → 2024-09-30 | ¥3.9bn |
| Operating Segments Not Included In Reportable Segments And Other Revenue Generating Business Activitiesother segments | segment profit | 2024-04-01 → 2024-09-30 | ¥754m |
| Reconciling Itemsreconciling | revenue | 2024-04-01 → 2024-09-30 | −¥53.4bn |
| Reconciling Itemsreconciling | revenue intersegment | 2024-04-01 → 2024-09-30 | −¥53.4bn |
| Reconciling Itemsreconciling | segment profit | 2024-04-01 → 2024-09-30 | −¥5.6bn |
| Basic Chemicalsreportable segment | revenue | 2024-04-01 → 2024-09-30 | ¥316.5bn |
| Basic Chemicalsreportable segment | revenue external | 2024-04-01 → 2024-09-30 | ¥294.6bn |
| Basic Chemicalsreportable segment | revenue intersegment | 2024-04-01 → 2024-09-30 | ¥21.8bn |
| Basic Chemicalsreportable segment | segment profit | 2024-04-01 → 2024-09-30 | ¥3.1bn |
| Functional Materialsreportable segment | revenue | 2024-04-01 → 2024-09-30 | ¥264.0bn |
| Functional Materialsreportable segment | revenue external | 2024-04-01 → 2024-09-30 | ¥250.8bn |
| Functional Materialsreportable segment | revenue intersegment | 2024-04-01 → 2024-09-30 | ¥13.2bn |
| Functional Materialsreportable segment | segment profit | 2024-04-01 → 2024-09-30 | ¥15.7bn |
| Petroleumreportable segment | revenue | 2024-04-01 → 2024-09-30 | ¥3.76T |
| Petroleumreportable segment | revenue external | 2024-04-01 → 2024-09-30 | ¥3.75T |
| Petroleumreportable segment | revenue intersegment | 2024-04-01 → 2024-09-30 | ¥12.9bn |
| Petroleumreportable segment | segment profit | 2024-04-01 → 2024-09-30 | ¥51.4bn |
| Power And Renewable Energyreportable segment | revenue | 2024-04-01 → 2024-09-30 | ¥67.0bn |
| Power And Renewable Energyreportable segment | revenue external | 2024-04-01 → 2024-09-30 | ¥65.5bn |
| Power And Renewable Energyreportable segment | revenue intersegment | 2024-04-01 → 2024-09-30 | ¥1.5bn |
| Power And Renewable Energyreportable segment | segment profit | 2024-04-01 → 2024-09-30 | −¥5.2bn |
| Resourcesreportable segment | revenue | 2024-04-01 → 2024-09-30 | ¥136.0bn |
| Resourcesreportable segment | revenue external | 2024-04-01 → 2024-09-30 | ¥136.0bn |
| Resourcesreportable segment | revenue intersegment | 2024-04-01 → 2024-09-30 | ¥0 |
| Resourcesreportable segment | segment profit | 2024-04-01 → 2024-09-30 | ¥37.2bn |
| —segment total | revenue | 2024-04-01 → 2024-09-30 | ¥4.55T |
| —segment total | revenue external | 2024-04-01 → 2024-09-30 | ¥4.50T |
| —segment total | revenue intersegment | 2024-04-01 → 2024-09-30 | ¥49.4bn |
| —segment total | segment profit | 2024-04-01 → 2024-09-30 | ¥102.2bn |
| Total Of Reportable Segments And Otherssegment total | revenue | 2024-04-01 → 2024-09-30 | ¥4.56T |
| Total Of Reportable Segments And Otherssegment total | revenue external | 2024-04-01 → 2024-09-30 | ¥4.50T |
| Total Of Reportable Segments And Otherssegment total | revenue intersegment | 2024-04-01 → 2024-09-30 | ¥53.4bn |
| Total Of Reportable Segments And Otherssegment total | segment profit | 2024-04-01 → 2024-09-30 | ¥102.9bn |
Segment names come from EDINET member IDs; not yet mapped to a common taxonomy.
All source rows · 672
| Item | Context | Value | Unit |
|---|---|---|---|
| Company name in english cover page | FilingDateInstant | Idemitsu Kosan Co.,Ltd. | |
| Title and name of representative cover page | FilingDateInstant | Original text (Japanese)代表取締役社長 酒井 則明 | |
| Address of registered headquarter cover page | FilingDateInstant | Original text (Japanese)東京都千代田区大手町一丁目２番１号 | |
| Telephone number address of registered headquarter cover page | FilingDateInstant | 03 (3213) 3192 | |
| Name of contact person address of registered headquarter cover page | FilingDateInstant | Original text (Japanese)経理部長 島 洋史 | |
| Nearest place of contact cover page | FilingDateInstant | Original text (Japanese)東京都千代田区大手町一丁目２番１号 | |
| Telephone number nearest place of contact cover page | FilingDateInstant | 03 (3213) 3192 | |
| Name of contact person nearest place of contact cover page | FilingDateInstant | Original text (Japanese)経理部長 島 洋史 | |
| Place for public inspection cover page (text) | FilingDateInstant | Text · Plus | |
| Edinet code | FilingDateInstant | E01084 | |
| Fund code | FilingDateInstant | － | |
| Security code | FilingDateInstant | 50190 | |
| Filer name in japanese | FilingDateInstant | Original text (Japanese)出光興産株式会社 | |
| Filer name in english | FilingDateInstant | Idemitsu Kosan Co.,Ltd. | |
| Fund name in japanese | FilingDateInstant | － | |
| Fund name in english | FilingDateInstant | － | |
| Cabinet office ordinance | FilingDateInstant | Original text (Japanese)企業内容等の開示に関する内閣府令 | |
| Document type | FilingDateInstant | Original text (Japanese)第四号の三様式 | |
| Accounting standards | FilingDateInstant | Japan GAAP | |
| Whether consolidated financial statements are prepared | FilingDateInstant | true | |
| Industry code when consolidated financial statements are prepared in accordance with industry specific regulations | FilingDateInstant | CTE | |
| Industry code when financial statements are prepared in accordance with industry specific regulations | FilingDateInstant | － | |
| Current fiscal year start date | FilingDateInstant | 2025-04-01 | |
| Current period end date | FilingDateInstant | 2025-09-30 | |
| Type of current period | FilingDateInstant | HY | |
| Current fiscal year end date | FilingDateInstant | 2026-03-31 | |
| Previous fiscal year start date | FilingDateInstant | 2024-04-01 | |
| Comparative period end date | FilingDateInstant | 2024-09-30 | |
| Previous fiscal year end date | FilingDateInstant | 2025-03-31 | |
| Next fiscal year start date | FilingDateInstant | － | |
| End date of quarterly or semi annual period of next fiscal year | FilingDateInstant | － | |
| Amendment flag | FilingDateInstant | false | |
| Identification of document subject to amendment | FilingDateInstant | － | |
| Report amendment flag | FilingDateInstant | false | |
| Xbrl amendment flag | FilingDateInstant | false | |
| Business results of group (text) | FilingDateInstant | Text · Plus | |
| Description of business (text) | FilingDateInstant | Text · Plus | |
| Business risks (text) | FilingDateInstant | Text · Plus | |
| Management analysis of financial position operating results and cash flows (text) | FilingDateInstant | Text · Plus | |
| Basic policy regarding control of company (text) | FilingDateInstant | Text · Plus | |
| Critical contracts (text) | FilingDateInstant | Text · Plus | |
| Total number of shares (text) | FilingDateInstant | Text · Plus | |
| Issued shares total number of shares etc (text) | FilingDateInstant | Text · Plus | |
| Class issued shares total number of shares etc | FilingDateInstant_OrdinaryShareMember | Original text (Japanese)普通株式 | |
| Name of financial instruments exchange on which securities are listed or authorized financial instruments business association to which securities are registered | FilingDateInstant_OrdinaryShareMember | Original text (Japanese)東京証券取引所プライム市場 | |
| Description issued shares total number of shares etc | FilingDateInstant_OrdinaryShareMember | Original text (Japanese)単元株式数100株 | |
| Details of employee share option program (text) | FilingDateInstant | Text · Plus | |
| Other information on share acquisition rights (text) | FilingDateInstant | Text · Plus | |
| Exercises etc of moving strike convertible bonds etc (text) | FilingDateInstant | Text · Plus | |
| Changes in number of issued shares stated capital etc (text) | FilingDateInstant | Text · Plus |
Every row of the EDINET CSV. Item names are the XBRL element names; filed text is kept in its original Japanese. Filed text is available on Plus and Pro.
Data checks · 14 of 14 passed
| balance sheet identity | pass rounding |
| balance sheet identity | pass rounding |
| dei present | pass |
| period resolution | pass |
| statement vs summary · net assets | pass |
| statement vs summary · net assets | pass |
| statement vs summary · net income attributable to parent | pass |
| statement vs summary · net income attributable to parent | pass |
| statement vs summary · operating cash flow | pass |
| statement vs summary · operating cash flow | pass |
| statement vs summary · revenue | pass |
| statement vs summary · revenue | pass |
| statement vs summary · total assets | pass |
| statement vs summary · total assets | pass |