Notes - Segment Information, Etc.
| Concept | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 
                                                208,262,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,536,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                252,979,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                253,136,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                157,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,935,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                253,136,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                31,244,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,476,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                26,373,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                221,793,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                182,356,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,586,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                126,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                221,920,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                221,920,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                719,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                56,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                830,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,413,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                582,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                55,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,413,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                41,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                241,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                188,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                506,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -747,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                747,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||||||
| Depreciation | 
                                                1,125,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                426,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,968,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,969,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                238,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,904,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                178,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -65,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                428,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                163,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,981,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,144,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                246,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -62,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,919,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,982,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |