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 | 
                                                1,740,024,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,913,125,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                463,037,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,037,796,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,929,414,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,990,134,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,906,736,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,990,134,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,950,426,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,463,418,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,838,490,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,109,585,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,838,490,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,433,022,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                440,737,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,441,300,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                895,896,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                101,439,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                353,267,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                538,222,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,577,343,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,476,547,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,376,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,476,547,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,477,870,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                110,733,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,991,413,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,160,526,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,991,413,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                899,194,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                334,394,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,694,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||||||
| Depreciation | 
                                                52,520,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,044,762,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                169,374,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                42,543,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                28,176,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,511,679,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                174,300,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,460,473,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -51,205,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                30,143,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,154,133,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,544,333,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,705,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -45,148,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,499,184,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                49,927,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                132,125,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                144,297,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                56,487,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,577,786,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                387,905,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                44,230,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,347,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,431,661,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                329,903,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,306,792,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -124,868,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                26,553,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                615,964,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,889,441,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                69,057,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -86,933,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,802,507,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                50,325,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                812,306,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                315,233,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |