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 | — | 
                                                -3,561,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -7,036,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Interest and dividends received | — | 
                                                230,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                198,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Interest paid | — | 
                                                -272,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -255,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Income taxes paid | — | 
                                                -286,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,129,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) operating activities | — | 
                                                -3,824,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -8,222,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash flows from investing activities | |||||
| Purchase of property, plant and equipment | — | 
                                                -1,268,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -4,067,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Proceeds from sale of investment securities | — | 
                                                493,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) investing activities | — | 
                                                -1,123,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -4,244,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash flows from financing activities | |||||
| Proceeds from long-term borrowings | — | 
                                                1,000,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,800,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Repayments of long-term borrowings | — | 
                                                -3,322,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,706,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Purchase of treasury shares | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -511,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Dividends paid | — | 
                                                -665,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -579,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) financing activities | — | 
                                                3,181,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,268,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Effect of exchange rate change on cash and cash equivalents | — | 
                                                62,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                352,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net increase (decrease) in cash and cash equivalents | — | 
                                                -1,704,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,846,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash and cash equivalents | 
                                                6,750,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                8,454,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,301,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |