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, profit (loss), asset, liability, and other items for each reportable segment | ||||||||||||||||
| Sales | ||||||||||||||||
| Revenues from external customers | 
                                                6,295,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,007,955,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,700,179,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,841,323,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,014,250,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                466,452,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,014,250,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,812,635,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,343,389,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,343,389,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,865,818,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                490,937,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                173,997,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,169,391,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                708,030,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                215,414,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,728,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,413,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                211,273,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                923,444,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -923,444,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,441,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                958,356,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,260,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                257,088,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -958,356,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                698,566,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                259,790,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |