Notes - Consolidated Balance Sheet
| Concept | 
                                    
                                        As at 2025-03-31  | 
                            
                                
                                    
                                        As at 2025-03-31  | 
                            
                        
|---|---|---|
| Notes - Consolidated balance sheet | ||
| Notes - Consolidated balance sheet | ||
| Notes regarding components of inventories | — | |
| Notes regarding amounts of notes and accounts receivable - trade and contract assets | 
                                        
                                             ※1.完成工事未収入金等のうち、顧客との契約から生じた債権及び契約資産の金額は、連結財務諸表「注記事項(収益認識関係) 3.(1) 契約資産及び契約負債の残高等」に記載しています。 
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                                    — | 
| Notes regarding accumulated depreciation of property, plant and equipment | — | |
| Notes regarding amounts of tax purpose reduction entry of property, plant and equipment | — | |
| Notes regarding shares and bonds, etc. of unconsolidated subsidiaries and associates | — | |
| Notes regarding revaluation of land for business | — | |
| Notes regarding pledged assets | ||
| Notes regarding amount of contract liabilities | 
                                        
                                             ※9.未成工事受入金及び前受金のうち、契約負債の金額は、連結財務諸表「注記事項(収益認識関係) 3.(1) 契約資産及び契約負債の残高等」に記載しています。 
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                                    — | 
| Notes regarding presentation of inventories and provision for loss on construction contracts | — | |
| Notes regarding guarantee obligations | — |