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 | — | 
                                                16,771,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -11,311,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Interest and dividends received | — | 
                                                653,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                511,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Interest paid | — | 
                                                -10,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -19,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Income taxes paid | — | 
                                                -3,175,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,742,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) operating activities | — | 
                                                14,238,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -13,562,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash flows from investing activities | |||||
| Purchase of property, plant and equipment | — | 
                                                -206,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -174,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Purchase of investment securities | — | 
                                                -334,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -816,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Proceeds from sale of investment securities | — | 
                                                2,967,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                818,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Loan advances | — | 
                                                -7,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -22,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Proceeds from collection of loans receivable | — | 
                                                20,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                26,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Other, net | — | 
                                                1,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                108,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) investing activities | — | 
                                                2,048,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -783,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash flows from financing activities | |||||
| Repayments of long-term borrowings | — | 
                                                -166,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -166,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Purchase of treasury shares | — | 
                                                -1,012,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,577,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Dividends paid | — | 
                                                -2,974,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,087,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) financing activities | — | 
                                                -10,184,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,521,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Other, net | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Effect of exchange rate change on cash and cash equivalents | — | 
                                                535,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                379,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net increase (decrease) in cash and cash equivalents | — | 
                                                6,638,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -11,445,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash and cash equivalents | 
                                                20,120,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                13,481,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                24,927,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |