Quarterly Balance Sheet
| Concept | As at 2024-03-31 | As at 2023-09-30 | 
|---|---|---|
| Quarterly balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                1,913,990,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,820,016,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Merchandise and finished goods | 
                                                390,683,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                398,519,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Work in process | 
                                                91,324,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                99,953,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Raw materials and supplies | 
                                                155,349,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                148,797,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                120,954,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                140,837,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                3,740,312,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,576,144,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                1,794,063,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,859,270,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Land | 
                                                1,182,434,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,234,103,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Construction in progress | 
                                                40,684,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                28,182,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                2,728,601,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,710,437,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accumulated depreciation | 
                                                -2,506,697,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,483,821,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other, net | 
                                                221,903,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                226,616,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | 
                                                60,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                73,043,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Investments and other assets | 
                                                287,074,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                254,121,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Investment securities | 
                                                41,432,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                36,854,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred tax assets | 
                                                2,813,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                242,829,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                217,266,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                2,141,138,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,186,435,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                5,881,450,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,762,579,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Notes and accounts payable - trade | 
                                                211,734,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                199,959,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                13,858,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,728,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                118,781,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                137,785,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                976,025,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,070,350,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Long-term borrowings | 
                                                158,360,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                81,973,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                2,419,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,574,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                671,786,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                534,057,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                1,647,811,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,604,408,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| Share capital | 
                                                468,134,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                468,134,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                388,134,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                388,134,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                3,152,562,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,085,221,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -194,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -194,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                4,008,637,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,941,297,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Valuation difference on available-for-sale securities | 
                                                12,365,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,160,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                225,001,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                216,874,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                4,233,638,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,158,171,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                5,881,450,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,762,579,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |