Notes - Segment Information
| Concept | 2023-07-01 to 2024-06-30 | 2023-07-01 to 2024-06-30 | 2023-07-01 to 2024-06-30 | 2023-07-01 to 2024-06-30 | 2023-07-01 to 2024-06-30 | As at 2024-06-30 | 2023-07-01 to 2024-06-30 | 2023-07-01 to 2024-06-30 | As at 2023-06-30 | 2022-07-01 to 2023-06-30 | 2022-07-01 to 2023-06-30 | 2022-07-01 to 2023-06-30 | 2022-07-01 to 2023-06-30 | 2022-07-01 to 2023-06-30 | 2022-07-01 to 2023-06-30 | 2022-07-01 to 2023-06-30 | As at 2022-06-30 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Notes - Segment information | |||||||||||||||||
| Segment information | |||||||||||||||||
| Revenue | |||||||||||||||||
| Revenue from external customers | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                187,407,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                138,108,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,645,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                43,653,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                187,407,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                181,762,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                122,199,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                166,640,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                171,967,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                44,440,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                171,967,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,326,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Intersegment revenue | 
                                                -1,559,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,559,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,559,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,176,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,176,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,176,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Revenue | 
                                                -1,559,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                187,407,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                138,108,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,204,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                43,653,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                188,966,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                181,762,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                122,199,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                166,640,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                171,967,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                44,440,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                173,143,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,502,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,176,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Profit (loss) before tax | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,889,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,393,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Assets | — | — | — | — | — | 
                                                501,773,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                418,349,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
                                                345,181,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Depreciation and amortization | 
                                                432,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,042,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,290,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                278,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                41,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,610,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,332,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,004,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,136,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,745,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                131,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,386,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                249,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                359,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Impairment losses | — | 
                                                381,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — |