Notes - Segment Information, Etc.
| Concept | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Notes - Segment information, etc. | ||||||||||||||||
| Segment information | ||||||||||||||||
| Disclosure of sales and profit (loss) for each reportable segment | ||||||||||||||||
| Sales | ||||||||||||||||
| Revenues from external customers | 
                                                9,470,862,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,462,217,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,515,681,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,649,322,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,649,322,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                178,459,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,492,963,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                145,485,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,321,972,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,036,567,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,867,258,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,321,972,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,272,661,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,176,487,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                1,260,777,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,359,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,531,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,282,797,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,282,797,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,019,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,232,887,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,858,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,218,304,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,645,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,239,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,218,304,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,182,560,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,202,446,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |