Semi-Annual Consolidated Balance Sheet
| Concept | As at 2024-12-31 | As at 2024-06-30 | 
|---|---|---|
| Semi-annual consolidated balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                3,522,041,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,435,554,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                75,819,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                47,858,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -6,090,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -5,095,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                6,963,796,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,449,231,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                1,817,142,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,781,263,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Buildings and structures | — | — | 
| Buildings and structures, net | 
                                                575,668,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                591,676,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Land | 
                                                962,660,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                962,660,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | — | — | 
| Other, net | 
                                                278,812,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                226,925,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Intangible assets | 
                                                14,039,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,762,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                155,768,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                182,401,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Other | 
                                                165,558,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                192,191,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -9,790,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -9,790,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                1,986,950,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,981,427,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                8,950,746,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,430,658,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Notes and accounts payable - trade | 
                                                332,342,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                254,912,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Short-term borrowings | 
                                                1,000,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,000,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                136,915,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                86,092,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                113,188,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                211,069,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                3,284,577,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,911,482,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Long-term borrowings | 
                                                259,589,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                320,297,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retirement benefit liability | 
                                                437,945,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                426,580,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                3,232,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,341,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                704,848,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                756,254,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                3,989,426,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,667,736,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provision for retirement benefits for directors (and other officers) | 
                                                4,082,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,768,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provision for bonuses | 
                                                24,389,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                24,199,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred tax liabilities | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,267,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| Share capital | 
                                                574,804,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                574,804,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                952,910,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                949,341,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                3,533,462,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,328,881,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -170,713,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -185,647,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                4,890,464,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,667,380,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Valuation difference on available-for-sale securities | 
                                                35,097,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                57,118,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Foreign currency translation adjustment | 
                                                35,758,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                38,423,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                70,856,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                95,541,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                4,961,320,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,762,921,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                8,950,746,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,430,658,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |