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 | 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 | 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 | 
                                                1,503,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,067,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,299,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,621,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,348,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,563,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,293,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,001,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,067,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                32,427,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                30,726,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,210,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,453,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,215,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,688,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,158,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                32,427,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,700,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                493,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                610,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                39,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                64,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                116,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -610,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                664,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                123,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                40,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                43,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                31,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -664,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                541,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |