Semi-Annual Consolidated Statement Of Cash Flows
| Concept | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2023-03-31 | 2022-04-01 to 2023-03-31 | As at 2022-03-31 | 
|---|---|---|---|---|---|
| Semi-annual consolidated statement of cash flows | |||||
| Statement of cash flows | |||||
| Cash flows from operating activities | |||||
| Subtotal | 
                                                5,413,172,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                2,878,079,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Interest and dividends received | 
                                                58,285,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                55,803,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Interest paid | 
                                                -13,237,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -8,726,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Income taxes paid | 
                                                -1,368,903,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -1,460,414,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) operating activities | 
                                                4,089,318,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,464,742,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash flows from investing activities | |||||
| Purchase of property, plant and equipment | 
                                                -144,790,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -459,421,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Purchase of investment securities | 
                                                -2,200,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -900,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Proceeds from sale of investment securities | 
                                                600,964,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,650,964,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Other, net | 
                                                -13,831,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -10,969,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) investing activities | 
                                                -1,787,883,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                80,629,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash flows from financing activities | |||||
| Proceeds from long-term borrowings | 
                                                1,500,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                2,200,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Repayments of long-term borrowings | 
                                                -992,412,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -663,369,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Proceeds from issuance of shares | 
                                                76,360,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                58,100,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Purchase of treasury shares | 
                                                -75,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -144,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Dividends paid | 
                                                -735,906,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -432,489,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) financing activities | 
                                                -52,034,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,162,097,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net increase (decrease) in cash and cash equivalents | 
                                                2,249,400,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                2,707,469,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash and cash equivalents | — | 
                                                10,474,017,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,224,617,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                5,517,147,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |