Notes - Segment Information, Etc.
| Concept | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 
|---|---|---|---|---|---|---|---|---|---|---|
| Notes - Segment information, etc. | ||||||||||
| Segment information | ||||||||||
| Disclosure of sales, profit (loss), asset, liability, and other items for each reportable segment | ||||||||||
| Sales | ||||||||||
| Revenues from external customers | 
                                                61,870,558,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,226,951,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,762,382,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,974,770,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                104,834,661,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,964,639,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                50,879,279,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,984,766,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                92,930,953,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,102,269,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                97,643,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                360,944,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                337,664,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                796,250,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                202,017,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                110,470,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                346,007,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                658,494,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||
| Depreciation | 
                                                2,388,513,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                123,707,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,193,599,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,902,040,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,607,858,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,164,994,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,358,800,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,153,191,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,738,751,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                61,766,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                2,045,682,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                30,130,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,317,623,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                340,793,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,734,228,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,434,631,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,504,627,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                344,885,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,294,599,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,457,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |