Annual report

Period2023-04-01 → 2024-03-31
Filed2024-06-28
StandardJapan GAAP
ConsolidatedNo
Data checks13 of 13 passed
Key figures · 88
MetricValuePeriodScopeSource row
Revenue¥13.8bn2023-04-01 → 2024-03-31StandaloneNet sales
Revenue¥14.2bn2022-04-01 → 2023-03-31StandaloneNet sales
Revenue¥12.9bn2021-04-01 → 2022-03-31dStandaloneNet sales (5-year summary)
Revenue¥13.0bn2020-04-01 → 2021-03-31dStandaloneNet sales (5-year summary)
Revenue¥11.0bn2019-04-01 → 2020-03-31dStandaloneNet sales (5-year summary)
Operating income¥1.2bn2023-04-01 → 2024-03-31StandaloneOperating income
Operating income¥1.2bn2022-04-01 → 2023-03-31StandaloneOperating income
Ordinary income¥1.2bn2023-04-01 → 2024-03-31StandaloneOrdinary income
Ordinary income¥1.3bn2022-04-01 → 2023-03-31StandaloneOrdinary income
Ordinary income¥1.1bn2021-04-01 → 2022-03-31dStandaloneOrdinary income loss (5-year summary)
Ordinary income¥1.3bn2020-04-01 → 2021-03-31dStandaloneOrdinary income loss (5-year summary)
Ordinary income¥664m2019-04-01 → 2020-03-31dStandaloneOrdinary income loss (5-year summary)
Profit before tax¥1.2bn2023-04-01 → 2024-03-31StandaloneIncome before income taxes
Profit before tax¥1.3bn2022-04-01 → 2023-03-31StandaloneIncome before income taxes
Net income¥835m2023-04-01 → 2024-03-31StandaloneProfit loss
Net income¥899m2022-04-01 → 2023-03-31StandaloneProfit loss
Net income¥764m2021-04-01 → 2022-03-31dStandaloneNet income loss (5-year summary)
Net income¥901m2020-04-01 → 2021-03-31dStandaloneNet income loss (5-year summary)
Net income¥466m2019-04-01 → 2020-03-31dStandaloneNet income loss (5-year summary)
Total assets¥11.3bnat 2024-03-31StandaloneAssets
Total assets¥11.4bnat 2023-03-31StandaloneAssets
Total assets¥10.9bnat 2022-03-31dStandaloneTotal assets (5-year summary)
Total assets¥11.3bnat 2021-03-31dStandaloneTotal assets (5-year summary)
Total assets¥10.6bnat 2020-03-31dStandaloneTotal assets (5-year summary)
Total liabilities¥3.0bnat 2024-03-31StandaloneLiabilities
Total liabilities¥3.4bnat 2023-03-31StandaloneLiabilities
Net assets / equity¥8.3bnat 2024-03-31StandaloneNet assets
Net assets / equity¥8.0bnat 2023-03-31StandaloneNet assets
Net assets / equity¥7.6bnat 2022-03-31dStandaloneNet assets
Net assets / equity¥7.5bnat 2021-03-31dStandaloneNet assets (5-year summary)
Net assets / equity¥7.1bnat 2020-03-31dStandaloneNet assets (5-year summary)
Cash and deposits¥1.0bnat 2024-03-31StandaloneCash and deposits
Cash and deposits¥1.5bnat 2023-03-31StandaloneCash and deposits
Cash & equivalents¥3.9bnat 2024-03-31StandaloneCash and cash equivalents
Cash & equivalents¥3.4bnat 2023-03-31StandaloneCash and cash equivalents
Cash & equivalents¥3.3bnat 2022-03-31dStandaloneCash and cash equivalents
Cash & equivalents¥3.0bnat 2021-03-31dStandaloneCash and cash equivalents (5-year summary)
Cash & equivalents¥3.8bnat 2020-03-31dStandaloneCash and cash equivalents (5-year summary)
Operating cash flow¥1.2bn2023-04-01 → 2024-03-31StandaloneNet cash provided by used in operating activities
Operating cash flow¥823m2022-04-01 → 2023-03-31StandaloneNet cash provided by used in operating activities
Operating cash flow¥1.3bn2021-04-01 → 2022-03-31dStandaloneNet cash provided by used in operating activities (5-year summary)
Operating cash flow−¥7m2020-04-01 → 2021-03-31dStandaloneNet cash provided by used in operating activities (5-year summary)
Operating cash flow¥417m2019-04-01 → 2020-03-31dStandaloneNet cash provided by used in operating activities (5-year summary)
Investing cash flow−¥89m2023-04-01 → 2024-03-31StandaloneNet cash provided by used in investment activities
Investing cash flow−¥185m2022-04-01 → 2023-03-31StandaloneNet cash provided by used in investment activities
Investing cash flow−¥224m2021-04-01 → 2022-03-31dStandaloneNet cash provided by used in investing activities (5-year summary)
Investing cash flow−¥123m2020-04-01 → 2021-03-31dStandaloneNet cash provided by used in investing activities (5-year summary)
Investing cash flow−¥138m2019-04-01 → 2020-03-31dStandaloneNet cash provided by used in investing activities (5-year summary)
Financing cash flow−¥628m2023-04-01 → 2024-03-31StandaloneNet cash provided by used in financing activities
Financing cash flow−¥544m2022-04-01 → 2023-03-31StandaloneNet cash provided by used in financing activities
Financing cash flow−¥801m2021-04-01 → 2022-03-31dStandaloneNet cash provided by used in financing activities (5-year summary)
Financing cash flow−¥627m2020-04-01 → 2021-03-31dStandaloneNet cash provided by used in financing activities (5-year summary)
Financing cash flow−¥471m2019-04-01 → 2020-03-31dStandaloneNet cash provided by used in financing activities (5-year summary)
EPS (basic)¥339.092023-04-01 → 2024-03-31StandaloneBasic earnings loss per share (5-year summary)
EPS (basic)¥3652022-04-01 → 2023-03-31StandaloneBasic earnings loss per share (5-year summary)
EPS (basic)¥312.192021-04-01 → 2022-03-31dStandaloneBasic earnings loss per share (5-year summary)
EPS (basic)¥365.82020-04-01 → 2021-03-31dStandaloneBasic earnings loss per share (5-year summary)
EPS (basic)¥185.592019-04-01 → 2020-03-31dStandaloneBasic earnings loss per share (5-year summary)
Dividend per share¥2402023-04-01 → 2024-03-31StandaloneDividend paid per share (5-year summary)
Dividend per share¥2552022-04-01 → 2023-03-31StandaloneDividend paid per share (5-year summary)
Dividend per share¥2202021-04-01 → 2022-03-31dStandaloneDividend paid per share (5-year summary)
Dividend per share¥3302020-04-01 → 2021-03-31dStandaloneDividend paid per share (5-year summary)
Dividend per share¥1302019-04-01 → 2020-03-31dStandaloneDividend paid per share (5-year summary)
Net assets per share¥3,371.65at 2024-03-31StandaloneNet assets per share (5-year summary)
Net assets per share¥3,252.3at 2023-03-31StandaloneNet assets per share (5-year summary)
Net assets per share¥3,101.54at 2022-03-31dStandaloneNet assets per share (5-year summary)
Net assets per share¥3,079.18at 2021-03-31dStandaloneNet assets per share (5-year summary)
Net assets per share¥2,863.07at 2020-03-31dStandaloneNet assets per share (5-year summary)
Equity ratio73.3%at 2024-03-31StandaloneEquity to asset ratio (5-year summary)
Equity ratio70.1%at 2023-03-31StandaloneEquity to asset ratio (5-year summary)
Equity ratio70.4%at 2022-03-31dStandaloneEquity to asset ratio (5-year summary)
Equity ratio66.2%at 2021-03-31dStandaloneEquity to asset ratio (5-year summary)
Equity ratio67.3%at 2020-03-31dStandaloneEquity to asset ratio (5-year summary)
ROE10.2%2023-04-01 → 2024-03-31StandaloneRate of return on equity (5-year summary)
ROE11.5%2022-04-01 → 2023-03-31StandaloneRate of return on equity (5-year summary)
ROE10.1%2021-04-01 → 2022-03-31dStandaloneRate of return on equity (5-year summary)
ROE12.4%2020-04-01 → 2021-03-31dStandaloneRate of return on equity (5-year summary)
ROE6.5%2019-04-01 → 2020-03-31dStandaloneRate of return on equity (5-year summary)
Shares issued2,602,500at 2024-03-31StandaloneTotal number of issued shares (5-year summary)
Shares issued2,602,500at 2023-03-31StandaloneTotal number of issued shares (5-year summary)
Shares issued2,602,500at 2022-03-31dStandaloneTotal number of issued shares (5-year summary)
Shares issued2,602,500at 2021-03-31dStandaloneTotal number of issued shares (5-year summary)
Shares issued2,602,500at 2020-03-31dStandaloneTotal number of issued shares (5-year summary)
Employees265at 2024-03-31StandaloneNumber of employees
Employees268at 2023-03-31StandaloneNumber of employees
Employees268at 2022-03-31dStandaloneNumber of employees
Employees264at 2021-03-31dStandaloneNumber of employees
Employees263at 2020-03-31dStandaloneNumber of employees

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 · 36
SegmentItemPeriodValue
Operating Segments Not Included In Reportable Segments And Other Revenue Generating Business Activitiesother segmentsrevenue2023-04-01 → 2024-03-31¥1.9bn
Operating Segments Not Included In Reportable Segments And Other Revenue Generating Business Activitiesother segmentsrevenue external2023-04-01 → 2024-03-31¥1.9bn
Operating Segments Not Included In Reportable Segments And Other Revenue Generating Business Activitiesother segmentssegment profit2023-04-01 → 2024-03-31¥298m
Groundreportable segmentrevenue2023-04-01 → 2024-03-31¥973m
Groundreportable segmentrevenue external2023-04-01 → 2024-03-31¥973m
Groundreportable segmentsegment profit2023-04-01 → 2024-03-31¥443m
Portreportable segmentrevenue2023-04-01 → 2024-03-31¥8.2bn
Portreportable segmentrevenue external2023-04-01 → 2024-03-31¥8.2bn
Portreportable segmentsegment profit2023-04-01 → 2024-03-31¥1.9bn
Undergroundreportable segmentrevenue2023-04-01 → 2024-03-31¥2.8bn
Undergroundreportable segmentrevenue external2023-04-01 → 2024-03-31¥2.8bn
Undergroundreportable segmentsegment profit2023-04-01 → 2024-03-31¥730m
—segment totalrevenue2023-04-01 → 2024-03-31¥11.9bn
—segment totalrevenue external2023-04-01 → 2024-03-31¥11.9bn
—segment totalsegment profit2023-04-01 → 2024-03-31¥3.1bn
Total Of Reportable Segments And Otherssegment totalrevenue2023-04-01 → 2024-03-31¥13.8bn
Total Of Reportable Segments And Otherssegment totalrevenue external2023-04-01 → 2024-03-31¥13.8bn
Total Of Reportable Segments And Otherssegment totalsegment profit2023-04-01 → 2024-03-31¥3.4bn
Operating Segments Not Included In Reportable Segments And Other Revenue Generating Business Activitiesother segmentsrevenue2022-04-01 → 2023-03-31¥1.9bn
Operating Segments Not Included In Reportable Segments And Other Revenue Generating Business Activitiesother segmentsrevenue external2022-04-01 → 2023-03-31¥1.9bn
Operating Segments Not Included In Reportable Segments And Other Revenue Generating Business Activitiesother segmentssegment profit2022-04-01 → 2023-03-31¥267m
Groundreportable segmentrevenue2022-04-01 → 2023-03-31¥840m
Groundreportable segmentrevenue external2022-04-01 → 2023-03-31¥840m
Groundreportable segmentsegment profit2022-04-01 → 2023-03-31¥355m
Portreportable segmentrevenue2022-04-01 → 2023-03-31¥8.7bn
Portreportable segmentrevenue external2022-04-01 → 2023-03-31¥8.7bn
Portreportable segmentsegment profit2022-04-01 → 2023-03-31¥2.0bn
Undergroundreportable segmentrevenue2022-04-01 → 2023-03-31¥2.7bn
Undergroundreportable segmentrevenue external2022-04-01 → 2023-03-31¥2.7bn
Undergroundreportable segmentsegment profit2022-04-01 → 2023-03-31¥746m
—segment totalrevenue2022-04-01 → 2023-03-31¥12.2bn
—segment totalrevenue external2022-04-01 → 2023-03-31¥12.2bn
—segment totalsegment profit2022-04-01 → 2023-03-31¥3.1bn
Total Of Reportable Segments And Otherssegment totalrevenue2022-04-01 → 2023-03-31¥14.2bn
Total Of Reportable Segments And Otherssegment totalrevenue external2022-04-01 → 2023-03-31¥14.2bn
Total Of Reportable Segments And Otherssegment totalsegment profit2022-04-01 → 2023-03-31¥3.4bn

Segment names come from EDINET member IDs; not yet mapped to a common taxonomy.

All source rows · 1,178
ItemContextValueUnit
Name of securities details of deemed holdings of equity securities held for purposes other than pure investment reporting companyCurrentYearInstant_Row6Member
Original text (Japanese)東京瓦斯㈱
Purpose of shareholding overview of business alliance quantitative effects of shareholding and reason for increase in number of shares details of deemed holdings of shares held for purposes other than pure investment reporting companyCurrentYearInstant_Row6Member
Original text (Japanese)退職給付信託契約による議決権行使指図権限
Whether issuer of aforementioned shares holds reporting companys shares details of deemed holdings of shares held for purposes other than pure investment reporting companyCurrentYearInstant_Row6Member
Original text (Japanese)無
Name of securities details of deemed holdings of equity securities held for purposes other than pure investment reporting companyCurrentYearInstant_Row7Member
Original text (Japanese)三井住友トラスト・ホールディングス㈱ (注)5
Purpose of shareholding overview of business alliance quantitative effects of shareholding and reason for increase in number of shares details of deemed holdings of shares held for purposes other than pure investment reporting companyCurrentYearInstant_Row7Member
Original text (Japanese)退職給付信託契約による議決権行使指図権限
Whether issuer of aforementioned shares holds reporting companys shares details of deemed holdings of shares held for purposes other than pure investment reporting companyCurrentYearInstant_Row7Member
Original text (Japanese)有(注)4
Name of securities details of deemed holdings of equity securities held for purposes other than pure investment reporting companyCurrentYearInstant_Row8Member
Original text (Japanese)西部ガスホールディングス㈱
Purpose of shareholding overview of business alliance quantitative effects of shareholding and reason for increase in number of shares details of deemed holdings of shares held for purposes other than pure investment reporting companyCurrentYearInstant_Row8Member
Original text (Japanese)退職給付信託契約による議決権行使指図権限
Whether issuer of aforementioned shares holds reporting companys shares details of deemed holdings of shares held for purposes other than pure investment reporting companyCurrentYearInstant_Row8Member
Original text (Japanese)無
Name of securities details of deemed holdings of equity securities held for purposes other than pure investment reporting companyCurrentYearInstant_Row9Member
Original text (Japanese)㈱東芝
Purpose of shareholding overview of business alliance quantitative effects of shareholding and reason for increase in number of shares details of deemed holdings of shares held for purposes other than pure investment reporting companyCurrentYearInstant_Row9Member-
Whether issuer of aforementioned shares holds reporting companys shares details of deemed holdings of shares held for purposes other than pure investment reporting companyCurrentYearInstant_Row9Member
Original text (Japanese)無
Footnotes deemed holdings of shares held for purposes other than pure investment reporting company (text)CurrentYearInstant_Row1MemberText · Plus
Footnotes deemed holdings of shares held for purposes other than pure investment reporting company (text)CurrentYearInstant_Row2MemberText · Plus
Footnotes deemed holdings of shares held for purposes other than pure investment reporting company (text)CurrentYearInstant_Row3MemberText · Plus
Footnotes deemed holdings of shares held for purposes other than pure investment reporting company (text)CurrentYearInstant_Row4MemberText · Plus
Footnotes deemed holdings of shares held for purposes other than pure investment reporting company (text)CurrentYearInstant_Row5MemberText · Plus
Description of fact that financial statements have been prepared in accordance with special ordinance or regulations for industry in appended list financial informationCurrentYearDurationText · Plus
Note on independent audit financial informationCurrentYearDurationText · Plus
Description of fact that consolidated financial statements have not been prepared financial informationCurrentYearDuration
Original text (Japanese)当社は子会社はありませんので、連結財務諸表を作成しておりません。
Remarkable efforts to ensure fair presentation of consolidated financial statements etc financial informationCurrentYearDurationText · Plus
Balance sheet (text)CurrentYearDurationText · Plus
Statement of income (text)CurrentYearDurationText · Plus
Detailed schedule of cost of sales (text)CurrentYearDurationText · Plus
Detailed schedule of manufacturing cost (text)CurrentYearDurationText · Plus
Statement of changes in equity (text)CurrentYearDurationText · Plus
Statement of cash flows (text)CurrentYearDurationText · Plus
Notes significant accounting policies financial statements (text)CurrentYearDurationText · Plus
Notes regarding amounts of notes and accounts receivable trade and contract assets (text)CurrentYearInstant_NonConsolidatedMemberText · Plus
Notes regarding presentation of inventories and provision for loss on construction contracts (text)CurrentYearInstant_NonConsolidatedMemberText · Plus
Notes regarding promissory notes due on balance sheet date (text)CurrentYearInstant_NonConsolidatedMemberText · Plus
Notes regarding loss on construction contracts (text)CurrentYearDuration_NonConsolidatedMemberText · Plus
Breakdown of transfer to other account (text)CurrentYearDuration_NonConsolidatedMemberText · Plus
Research and development expenses included in general and administrative expenses and manufacturing cost for current period (text)CurrentYearDuration_NonConsolidatedMemberText · Plus
Notes regarding non operating income and non operating expenses incurred from transactions with affiliated entities (text)CurrentYearDuration_NonConsolidatedMemberText · Plus
Notes regarding issued shares and treasury shares (text)Prior1YearDuration_NonConsolidatedMemberText · Plus
Notes regarding dividend (text)Prior1YearDuration_NonConsolidatedMemberText · Plus
Notes regarding issued shares and treasury shares (text)CurrentYearDuration_NonConsolidatedMemberText · Plus
Notes regarding dividend (text)CurrentYearDuration_NonConsolidatedMemberText · Plus
Reconciliation of ending balance of cash and cash equivalents with account balances per balance sheet (text)CurrentYearDuration_NonConsolidatedMemberText · Plus
Notes leases financial statements (text)CurrentYearDurationText · Plus
Notes financial instruments financial statements (text)CurrentYearDurationText · Plus
Notes securities financial statements (text)CurrentYearDurationText · Plus
Notes derivatives financial statements (text)CurrentYearDurationText · Plus
Notes retirement benefits financial statements (text)CurrentYearDurationText · Plus
Notes tax effect accounting financial statements (text)CurrentYearDurationText · Plus
Notes equity in earnings losses of affiliates if equity method is applied financial statements (text)CurrentYearDurationText · Plus
Notes asset retirement obligations financial statements (text)CurrentYearDurationText · Plus
Notes revenue recognition financial statements (text)CurrentYearDurationText · Plus
Notes segment information etc financial statements (text)CurrentYearDurationText · 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 · 13 of 13 passed
balance sheet identitynon_consolidated 2023-03-31pass
balance sheet identitynon_consolidated 2024-03-31pass
dei present pass
period resolution pass
statement vs summary · net assetsnon_consolidated 2022-03-31pass
statement vs summary · net assetsnon_consolidated 2023-03-31pass
statement vs summary · net assetsnon_consolidated 2024-03-31pass
statement vs summary · operating cash flownon_consolidated 2022-04-01/2023-03-31pass
statement vs summary · operating cash flownon_consolidated 2023-04-01/2024-03-31pass
statement vs summary · revenuenon_consolidated 2022-04-01/2023-03-31pass
statement vs summary · revenuenon_consolidated 2023-04-01/2024-03-31pass
statement vs summary · total assetsnon_consolidated 2023-03-31pass
statement vs summary · total assetsnon_consolidated 2024-03-31pass