Quarterly Consolidated Statement Of Cash Flows
| Concept | As at 2024-01-31 | 2023-02-01 to 2024-01-31 | As at 2023-01-31 | 2022-02-01 to 2023-01-31 | As at 2022-01-31 | 
|---|---|---|---|---|---|
| Quarterly consolidated statement of cash flows | |||||
| Statement of cash flows | |||||
| Cash flows from operating activities | |||||
| Subtotal | — | 
                                                189,369,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                769,696,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Interest and dividends received | — | 
                                                10,432,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                12,350,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Interest paid | — | 
                                                -444,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -228,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Income taxes paid | — | 
                                                -226,085,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -160,963,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) operating activities | — | 
                                                -29,411,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                634,823,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash flows from investing activities | |||||
| Purchase of property, plant and equipment | — | 
                                                -10,887,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -11,100,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Purchase of investment securities | — | 
                                                -40,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) investing activities | — | 
                                                -657,262,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -511,427,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash flows from financing activities | |||||
| Purchase of treasury shares | — | 
                                                -126,110,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -260,078,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Dividends paid | — | 
                                                -251,625,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -85,799,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) financing activities | — | 
                                                -56,475,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -316,714,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Effect of exchange rate change on cash and cash equivalents | — | 
                                                38,918,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                109,695,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net increase (decrease) in cash and cash equivalents | — | 
                                                -704,230,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -83,622,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash and cash equivalents | 
                                                1,183,933,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,888,164,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,971,786,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |