Notes - Semi-Annual Balance Sheet
| Concept | 
                                    
                                        As at 2025-03-31  | 
                            
                                
                                    
                                        As at 2025-03-31  | 
                            
                        
|---|---|---|
| Notes - Semi-annual balance sheet | ||
| Notes - Semi-annual balance sheet | ||
| Notes regarding pledged assets | — | |
| Notes regarding presentation of inventories and provision for loss on construction contracts | 
                                        
                                             
                                                 7 損失の発生が見込まれる工事契約に係る未成工事支出金と工事損失引当金は相殺せずに両建てで表示している。損失の発生が見込まれる工事契約に係る未成工事支出金のうち、工事損失引当金に対応する額はない。
                                                
                                             
                                        
                                     | 
                                
                                    — | 
| Notes regarding guarantee obligations | — | |
| Notes regarding promissory notes due on balance sheet date |