Semi-Annual Consolidated Statement Of Cash Flows
| Concept | As at 2023-11-30 | 2023-06-01 to 2023-11-30 | As at 2023-05-31 | 2022-06-01 to 2022-11-30 | As at 2022-11-30 | As at 2022-05-31 | 
|---|---|---|---|---|---|---|
| Semi-annual consolidated statement of cash flows | ||||||
| Statement of cash flows | ||||||
| Cash flows from operating activities | ||||||
| Subtotal | — | 
                                                180,626,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -35,185,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Interest and dividends received | — | 
                                                2,020,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                799,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Interest paid | — | 
                                                -9,132,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -8,234,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Income taxes paid | — | 
                                                -30,362,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -15,877,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) operating activities | — | 
                                                143,152,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -58,498,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash flows from investing activities | ||||||
| Purchase of property, plant and equipment | — | 
                                                -134,975,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -36,072,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Proceeds from sale of property, plant and equipment | — | 
                                                1,255,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Purchase of investment securities | — | 
                                                -48,133,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -1,076,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Proceeds from sale of investment securities | — | 
                                                1,400,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Other, net | — | 
                                                775,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -1,383,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) investing activities | — | 
                                                -115,474,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -69,475,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash flows from financing activities | ||||||
| Proceeds from long-term borrowings | — | 
                                                800,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                300,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Repayments of long-term borrowings | — | 
                                                -144,364,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -101,240,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Purchase of treasury shares | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -42,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Dividends paid | — | 
                                                -70,388,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -70,544,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) financing activities | — | 
                                                185,472,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                28,064,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Effect of exchange rate change on cash and cash equivalents | — | 
                                                -752,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net increase (decrease) in cash and cash equivalents | — | 
                                                212,398,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -99,909,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash and cash equivalents | 
                                                1,065,004,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                852,606,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                765,452,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                865,361,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |