Notes - Segment Information, Etc.
| Concept | 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 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 
                                                27,073,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                121,412,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                94,339,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                128,835,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,423,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                128,835,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                112,685,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                105,985,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,700,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                26,664,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                79,320,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                112,685,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                275,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,210,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                934,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,882,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -9,092,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,092,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,812,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,140,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,672,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                284,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -8,812,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                855,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||
| Depreciation | 
                                                473,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,021,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,548,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,275,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                148,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                105,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,170,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,925,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,769,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                155,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                512,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                113,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,257,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,038,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                202,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,980,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,777,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,255,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                144,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                130,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,125,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,547,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,351,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                195,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                247,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                38,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,104,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,585,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |