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 | 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 | 
                                                37,921,166,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                37,921,166,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,537,731,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,403,971,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,979,463,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                37,921,166,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                484,060,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                26,683,226,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,784,257,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                26,683,226,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,414,909,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                26,683,226,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                306,789,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                264,266,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                42,522,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                306,789,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -306,789,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                209,705,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -209,705,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                209,705,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                209,705,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||||
| Depreciation | 
                                                887,836,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                887,836,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                612,155,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                252,404,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,275,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                887,836,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                80,166,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                932,711,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                275,056,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                932,711,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                577,488,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                932,711,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments in entities accounted for using equity method | 
                                                5,214,473,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                72,212,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,142,261,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                72,212,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,214,473,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                80,392,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                80,392,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,633,570,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,713,963,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,713,963,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                919,281,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                919,281,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                676,204,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                225,600,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,477,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                919,281,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,919,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                834,425,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                118,433,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                834,425,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                710,071,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                834,425,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |