Quarterly Consolidated Statement Of Cash Flows
| Concept | As at 2025-02-28 | 2024-09-01 to 2025-02-28 | As at 2024-08-31 | As at 2024-02-29 | 2023-09-01 to 2024-02-29 | As at 2023-08-31 | 
|---|---|---|---|---|---|---|
| Quarterly consolidated statement of cash flows | ||||||
| Statement of cash flows | ||||||
| Cash flows from operating activities | ||||||
| Subtotal | — | 
                                                201,299,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                24,582,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Interest and dividends received | — | 
                                                1,157,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                11,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Income taxes paid | — | 
                                                -5,430,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -11,805,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) operating activities | — | 
                                                197,026,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                12,932,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash flows from investing activities | ||||||
| Purchase of property, plant and equipment | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -4,302,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Purchase of shares of subsidiaries resulting in change in scope of consolidation | — | 
                                                -21,660,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) investing activities | — | 
                                                -21,660,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                107,453,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash flows from financing activities | ||||||
| Other, net | — | 
                                                -1,582,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -628,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) financing activities | — | 
                                                -1,582,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -628,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Effect of exchange rate change on cash and cash equivalents | — | 
                                                5,194,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                4,220,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net increase (decrease) in cash and cash equivalents | — | 
                                                178,977,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                123,977,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash and cash equivalents | 
                                                2,722,364,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,543,387,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,488,882,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,364,904,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |