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 | 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 | 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 | 
                                                1,132,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                77,610,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,082,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,586,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,639,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,389,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                30,872,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,908,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                76,478,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                77,610,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                63,525,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                62,520,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                148,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,679,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,081,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,415,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,721,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                29,473,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                63,525,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,005,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                481,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                52,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                325,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                99,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                481,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -481,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                498,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                498,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                331,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                54,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                107,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -498,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |