Semi-Annual Consolidated Balance Sheet
| Concept | As at 2024-03-31 | As at 2023-06-30 | 
|---|---|---|
| Semi-annual consolidated balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                1,487,940,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                845,479,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                307,231,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                446,691,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                4,520,121,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,822,369,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                3,645,358,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,854,724,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Machinery, equipment and vehicles | — | — | 
| Machinery, equipment and vehicles, net | 
                                                2,018,219,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,159,488,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | — | — | 
| Other, net | 
                                                1,627,139,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,695,236,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Intangible assets | 
                                                371,107,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                377,140,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                280,076,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                217,156,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Non-current assets | 
                                                4,296,542,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,449,021,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                8,816,664,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,271,390,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Notes and accounts payable - trade | 
                                                149,056,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                151,469,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Short-term borrowings | 
                                                570,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                539,199,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                22,342,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,973,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                407,723,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                625,042,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                1,869,776,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,306,317,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Long-term borrowings | 
                                                1,770,861,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,074,198,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                52,428,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                50,008,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                1,932,755,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,225,527,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                3,802,532,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,531,845,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provision for retirement benefits for directors (and other officers) | 
                                                109,465,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                101,320,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provision for bonuses | 
                                                92,920,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                166,584,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provision for bonuses for directors (and other officers) | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                26,939,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Share capital | 
                                                781,768,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                100,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | ||
| Capital surplus | 
                                                3,023,669,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,341,916,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                602,685,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                782,953,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                4,408,123,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,224,870,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Foreign currency translation adjustment | 
                                                588,692,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                501,964,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Remeasurements of defined benefit plans | 
                                                17,315,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,710,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                606,008,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                514,674,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                5,014,131,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,739,544,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                8,816,664,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,271,390,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |