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 | 
                                                2,524,311,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,745,680,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                141,253,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                105,989,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -2,280,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,872,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                4,331,319,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,471,740,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                282,750,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                296,595,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Intangible assets | 
                                                43,178,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                48,661,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Investments and other assets | 
                                                255,217,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                289,947,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Allowance for doubtful accounts | 
                                                -4,340,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,862,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                581,146,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                635,204,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                4,912,466,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,106,944,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Short-term borrowings | 
                                                800,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,000,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                81,680,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                143,358,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                398,837,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                253,457,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                2,639,705,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,932,081,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Asset retirement obligations | 
                                                139,898,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                140,710,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                154,410,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                140,710,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                2,794,116,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,072,791,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| Share capital | 
                                                157,590,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                157,590,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                137,590,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                137,590,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                1,818,986,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,736,022,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -152,306,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -152,306,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                1,961,860,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,878,896,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Share acquisition rights | 
                                                34,971,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                46,298,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                2,118,350,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,034,153,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                4,912,466,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,106,944,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |