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 | 
                                                3,399,506,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,095,596,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,410,330,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                28,532,758,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,627,324,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,339,153,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,231,271,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                26,549,467,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,111,512,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,867,528,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                114,443,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,150,300,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,876,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,493,968,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                222,347,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                212,532,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,019,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,447,656,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                115,490,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,117,614,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||
| Depreciation | 
                                                210,985,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                546,856,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                310,522,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,543,350,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                474,986,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                512,758,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                327,405,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,580,231,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                222,413,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                517,653,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                111,304,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                626,582,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                302,243,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,536,883,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,496,752,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                166,815,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                95,674,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                682,380,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                97,736,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                322,153,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |