Notes - Segment Information, Etc.
| Concept | 2023-05-16 to 2024-05-15 | 2023-05-16 to 2024-05-15 | 2023-05-16 to 2024-05-15 | 2023-05-16 to 2024-05-15 | 2023-05-16 to 2024-05-15 | 2022-05-16 to 2023-05-15 | 2022-05-16 to 2023-05-15 | 2022-05-16 to 2023-05-15 | 2022-05-16 to 2023-05-15 | 2022-05-16 to 2023-05-15 | 
|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,433,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                95,520,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                94,086,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                95,520,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                86,292,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,188,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                87,481,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                87,481,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                -424,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                368,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                55,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                424,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                54,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                338,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -393,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                393,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||
| Depreciation | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                31,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,327,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,295,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,326,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,260,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,279,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,280,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                -4,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                195,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,612,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,421,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,617,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,233,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                310,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -4,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,540,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,544,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |