Notes - Segment Information, Etc.
| Concept | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Notes - Segment information, etc. | ||||||||||||||||||
| Segment information | ||||||||||||||||||
| Disclosure of sales, profit (loss), asset, liability, and other items for each reportable segment | ||||||||||||||||||
| Sales | ||||||||||||||||||
| Revenues from external customers | 
                                                9,377,009,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,543,050,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,840,863,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                34,126,910,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                583,859,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,161,335,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                163,841,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                34,126,910,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                164,230,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,900,559,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,908,509,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,305,408,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                34,497,568,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,522,410,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                597,008,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                34,497,568,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                18,762,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                62,538,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                43,775,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                62,538,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -62,538,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                47,370,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                30,996,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,373,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -47,370,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                47,370,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||||||
| Depreciation | 
                                                378,164,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,392,822,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                684,080,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,402,117,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,294,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                290,911,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                39,667,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,414,462,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,345,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                42,982,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,343,776,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                648,806,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                305,612,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,367,271,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                346,374,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,528,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,966,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,353,305,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                412,048,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,489,580,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                835,288,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,493,723,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,142,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                206,680,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,563,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,222,995,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                729,272,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,102,752,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                680,275,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                210,161,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,300,484,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                212,315,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,318,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                190,413,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,110,070,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |