Semi-Annual Consolidated Statement Of Cash Flows
| Concept | As at 2024-09-30 | 2024-04-01 to 2024-09-30 | As at 2024-03-31 | As at 2023-09-30 | 2023-04-01 to 2023-09-30 | As at 2023-03-31 | 
|---|---|---|---|---|---|---|
| Semi-annual consolidated statement of cash flows | ||||||
| Statement of cash flows | ||||||
| Cash flows from operating activities | ||||||
| Subtotal | — | 
                                                3,424,087,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                674,071,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Interest and dividends received | — | 
                                                37,230,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                31,893,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Interest paid | — | 
                                                -24,825,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -21,165,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Income taxes paid | — | 
                                                -601,971,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -177,219,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) operating activities | — | 
                                                2,834,521,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                343,319,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash flows from investing activities | ||||||
| Purchase of property, plant and equipment | — | 
                                                -960,621,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -667,833,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Proceeds from sale of property, plant and equipment | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                14,261,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Purchase of investment securities | — | 
                                                -1,050,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -716,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Loan advances | — | 
                                                -249,103,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -331,147,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Other, net | — | 
                                                2,080,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,526,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) investing activities | — | 
                                                -1,171,786,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -964,734,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash flows from financing activities | ||||||
| Proceeds from short-term borrowings | — | 
                                                300,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Purchase of treasury shares | — | 
                                                -58,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -3,599,386,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Dividends paid | — | 
                                                -138,905,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -164,981,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) financing activities | — | 
                                                146,090,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -3,769,798,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Dividends paid to non-controlling interests | — | 
                                                -13,097,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -4,742,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Other, net | — | 
                                                -1,847,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -686,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Effect of exchange rate change on cash and cash equivalents | — | 
                                                110,088,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                66,785,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net increase (decrease) in cash and cash equivalents | — | 
                                                1,918,913,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -4,324,427,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash and cash equivalents | 
                                                6,450,275,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                4,531,361,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,021,653,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                9,346,080,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |