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 | — | 
                                                7,217,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                118,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Interest and dividends received | — | 
                                                205,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                237,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Interest paid | — | 
                                                -123,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -79,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Income taxes paid | — | 
                                                -1,981,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,019,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) operating activities | — | 
                                                5,300,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -739,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash flows from investing activities | |||||
| Purchase of investment securities | — | 
                                                -10,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,392,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Purchase of shares of subsidiaries resulting in change in scope of consolidation | — | 
                                                -264,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Other, net | — | 
                                                39,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -36,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) investing activities | — | 
                                                -1,762,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,045,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash flows from financing activities | |||||
| Proceeds from long-term borrowings | — | 
                                                2,480,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,200,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Repayments of long-term borrowings | — | 
                                                -2,540,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,700,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Purchase of treasury shares | — | 
                                                -4,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,203,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Dividends paid | — | 
                                                -2,164,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,194,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) financing activities | — | 
                                                -5,422,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,120,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Effect of exchange rate change on cash and cash equivalents | — | 
                                                49,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                28,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net increase (decrease) in cash and cash equivalents | — | 
                                                -1,834,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,364,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash and cash equivalents | 
                                                6,450,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                8,285,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,921,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |