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 | 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 | 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 | 
                                                7,964,278,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                51,448,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                148,717,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,015,726,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                848,488,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                436,191,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                307,962,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                158,004,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,015,726,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,064,913,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                242,179,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                125,839,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                891,515,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                552,520,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                276,160,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                131,721,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,114,396,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,334,334,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,092,155,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,334,334,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                320,925,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                163,618,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -484,543,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                28,800,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                227,158,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                484,543,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                64,967,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                174,694,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                29,205,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                197,344,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                70,768,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                472,011,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                297,317,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -472,011,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||||||||||
| Depreciation | 
                                                63,996,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                309,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,710,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                26,350,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                85,016,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,160,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,799,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,977,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,930,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                64,306,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,778,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                683,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                26,013,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,195,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,017,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,164,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,275,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                71,351,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                70,667,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,361,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                93,712,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                47,691,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                767,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,470,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,700,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                55,928,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,370,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,823,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,050,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,438,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                48,458,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,308,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,974,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,054,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,046,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,191,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,994,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                28,260,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                28,260,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,538,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                37,798,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |