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 | 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 | 
                                                9,414,655,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                25,162,448,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                25,080,144,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                321,903,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                82,304,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                25,162,448,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,343,584,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,611,388,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,162,173,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,739,835,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                128,446,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,111,376,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,066,896,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                270,942,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,739,835,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                27,294,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,680,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                27,294,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,614,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -27,294,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,136,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -33,136,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,576,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,560,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,136,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |