Balance Sheet
| Concept | As at 2024-12-31 | As at 2024-06-30 | 
|---|---|---|
| Balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Non-current assets | ||
| Property, plant and equipment | ||
| Land | 
                                                2,308,208,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,308,208,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Buildings | — | — | 
| Buildings, net | 
                                                1,734,900,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,500,775,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | 
                                                4,224,740,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,152,155,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Leased assets, net | 
                                                19,250,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,526,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other, net | 
                                                162,381,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                321,645,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | — | — | 
| Own-used assets | ||
| Leased assets | — | — | 
| Intangible assets | ||
| Intangible assets | 
                                                37,243,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                42,424,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                37,243,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                42,424,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other intangible assets | ||
| Investments and other assets | ||
| Investments and other assets | 
                                                811,892,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                814,960,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                224,192,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                195,615,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                5,073,875,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,009,541,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                6,148,879,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,274,853,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Cash and deposits | 
                                                1,357,067,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,723,536,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                168,115,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                108,335,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | ||
| Other assets | ||
| Assets | 
                                                11,222,755,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,284,394,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Non-current liabilities | ||
| Non-current liabilities | 
                                                214,887,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                289,495,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Long-term borrowings | 
                                                109,400,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                142,050,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                29,855,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                68,639,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Lease liabilities | 
                                                16,514,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,030,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                3,355,739,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,465,510,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Short-term borrowings | 
                                                1,900,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                237,843,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                340,536,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                369,046,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                619,592,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | ||
| Lease liabilities | 
                                                5,009,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,963,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provisions | ||
| Provision for bonuses | 
                                                213,384,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,309,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                3,570,627,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,755,005,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other liabilities | — | — | 
| Other liabilities | — | — | 
| Liabilities and net assets | ||
| Shareholders' equity | 
                                                7,533,378,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,388,284,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Share capital | 
                                                400,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                400,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                1,101,935,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,046,116,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                6,269,383,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,181,322,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -237,940,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -239,154,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                118,749,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                141,103,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation difference on available-for-sale securities | 
                                                36,927,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                42,610,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                7,652,127,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,529,388,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                11,222,755,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,284,394,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| Capital surplus | ||
| Retained earnings | ||
| Valuation and translation adjustments |