Semi-Annual Consolidated Statement Of Cash Flows
| Concept | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2023-03-31 | 
|---|---|---|---|---|---|
| Semi-annual consolidated statement of cash flows | |||||
| Statement of cash flows | |||||
| Cash flows from operating activities | |||||
| Subtotal | — | 
                                                -481,192,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,476,982,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) operating activities | — | 
                                                -503,904,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,480,879,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash flows from investing activities | |||||
| Purchase of property, plant and equipment | — | 
                                                -6,294,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -10,304,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Proceeds from sale of property, plant and equipment | — | 
                                                2,976,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,841,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) investing activities | — | 
                                                -762,826,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -790,090,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash flows from financing activities | |||||
| Purchase of treasury shares | — | 
                                                -15,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -17,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Dividends paid | — | 
                                                -23,177,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -20,709,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) financing activities | — | 
                                                -23,129,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -20,726,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Effect of exchange rate change on cash and cash equivalents | — | 
                                                -19,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                130,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net increase (decrease) in cash and cash equivalents | — | 
                                                -1,289,879,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                670,192,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash and cash equivalents | 
                                                7,155,297,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                8,445,177,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,708,412,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |