Statement Of Cash Flows
| Concept | As at 2024-09-30 | 2023-10-01 to 2024-09-30 | As at 2023-09-30 | 2022-10-01 to 2023-09-30 | As at 2022-09-30 | 
|---|---|---|---|---|---|
| Statement of cash flows | |||||
| Statement of cash flows | |||||
| Cash flows from operating activities | |||||
| Subtotal | — | 
                                                146,503,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                926,013,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Interest and dividends received | — | 
                                                169,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                20,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Income taxes paid | — | 
                                                -233,618,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -132,104,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Interest paid | — | 
                                                -4,285,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -5,268,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) operating activities | — | 
                                                -91,231,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                788,660,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash flows from operating activities | |||||
| Cash flows from operating activities | |||||
| Cash flows from investing activities | |||||
| Purchase of property, plant and equipment | — | 
                                                -10,460,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -5,107,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) investing activities | — | 
                                                -21,345,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -61,369,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash flows from facilities maintenance and investing activities | |||||
| Cash flows from financing activities | |||||
| Dividends paid | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Repayments of long-term borrowings | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -10,335,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) financing activities | — | 
                                                -480,358,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -210,335,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net increase (decrease) in cash and cash equivalents | — | 
                                                -592,935,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                516,955,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash and cash equivalents | 
                                                2,152,744,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,745,680,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,228,724,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |