Quarterly 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 | 
|---|---|---|---|---|---|
| Quarterly statement of cash flows | |||||
| Statement of cash flows | |||||
| Cash flows from operating activities | |||||
| Subtotal | — | 
                                                5,633,800,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,051,045,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Interest and dividends received | — | 
                                                421,066,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                279,241,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Interest paid | — | 
                                                -30,637,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -21,729,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Income taxes paid | — | 
                                                -954,142,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -834,800,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) operating activities | — | 
                                                5,070,087,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,707,377,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash flows from investing activities | |||||
| Purchase of investment securities | — | 
                                                -296,179,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -122,378,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Proceeds from sale of investment securities | — | 
                                                80,466,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Other, net | — | 
                                                -1,344,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -12,379,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) investing activities | — | 
                                                -3,787,435,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,618,303,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash flows from financing activities | |||||
| Proceeds from short-term borrowings | — | 
                                                1,650,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,500,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Repayments of short-term borrowings | — | 
                                                -1,650,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,500,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Proceeds from long-term borrowings | — | 
                                                150,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Repayments of long-term borrowings | — | 
                                                -350,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -200,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Purchase of treasury shares | — | 
                                                -126,170,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -171,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Dividends paid | — | 
                                                -973,164,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -416,924,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Other, net | — | 
                                                -18,300,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -26,460,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) financing activities | — | 
                                                -1,541,797,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -913,689,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Effect of exchange rate change on cash and cash equivalents | — | 
                                                557,553,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                434,350,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net increase (decrease) in cash and cash equivalents | — | 
                                                298,408,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,609,735,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash and cash equivalents | 
                                                14,229,029,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                13,930,620,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,320,885,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |