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 | 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 | 
                                                21,818,793,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                174,020,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,212,185,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                30,950,001,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,745,002,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,074,106,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                88,266,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                26,174,187,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                954,587,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,057,227,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                76,270,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                91,869,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,598,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                69,178,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                84,178,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||
| Depreciation | 
                                                414,535,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,210,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,902,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                631,171,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                194,522,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                422,101,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                232,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                555,131,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,028,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                112,769,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                665,114,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                80,671,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                98,299,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,620,534,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                776,449,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                172,212,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,645,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,762,921,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                120,696,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,459,366,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |