Quarterly Statement Of Cash Flows
| Concept | 2023-09-01 to 2023-11-30 | As at 2023-11-30 | As at 2023-08-31 | 2022-09-01 to 2022-11-30 | As at 2022-11-30 | As at 2022-08-31 | 
|---|---|---|---|---|---|---|
| Quarterly statement of cash flows | ||||||
| Statement of cash flows | ||||||
| Cash flows from operating activities | ||||||
| Profit (loss) before income taxes | 
                                                139,834,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                12,581,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Depreciation | 
                                                32,889,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                17,298,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Increase (decrease) in allowance for doubtful accounts | 
                                                360,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -1,270,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Interest and dividend income | 
                                                -36,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -26,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Interest expenses | 
                                                1,629,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,477,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Decrease (increase) in trade receivables | 
                                                -86,539,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                302,348,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Increase (decrease) in trade payables | 
                                                -131,713,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -912,431,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Other, net | 
                                                191,429,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                68,142,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Subtotal | 
                                                126,246,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -646,639,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Interest and dividends received | 
                                                36,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                26,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Interest paid | 
                                                -1,628,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -1,463,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Income taxes paid | 
                                                -59,360,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -31,091,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) operating activities | 
                                                65,292,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -679,167,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash flows from investing activities | ||||||
| Purchase of property, plant and equipment | 
                                                -116,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Other, net | 
                                                151,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) investing activities | 
                                                -665,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash flows from financing activities | ||||||
| Repayments of long-term borrowings | 
                                                -40,841,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -40,841,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Redemption of bonds | 
                                                -10,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -10,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Dividends paid | 
                                                -111,937,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -109,128,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) financing activities | 
                                                -162,778,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -159,969,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net increase (decrease) in cash and cash equivalents | 
                                                -98,150,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -839,136,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash and cash equivalents | — | 
                                                4,042,093,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,140,243,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                3,858,402,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,697,539,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |